ZXR10. Router/Ethernet Switch Command Manual (MPLS Volume) Version

Transcription

1 ZXR10 Router/Ethernet Switch Command Manual (MPLS Volume) Version ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China Tel: (86) Fax: (86) URL:

2 LEGAL INFORMATION Copyright 2006 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPO- RATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided as is, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice. Users may visit ZTE technical support website to inquire related information. The ultimate right to interpret this product resides in ZTE CORPORATION. Revision History Revision No. Revision Date Revision Reason R1.0 Dec. 28, 2008 First Edition Serial Number: sjzl

3 About This Manual...i Command Introduction...1 Manual Use Guide... 1 of Man-Machine Commands... 1 Auxiliary Function... 2 Command Mode... 3 MPLS LDP Configuration...7 clear mpls ldp... 8 clear mpls ldp dampening... 8 clear mpls ldp flap... 9 mpls ip (Global Configuration)... 9 mpls ip(interface Configuration)...10 mpls label range...10 mpls ldp access-fec...11 mpls ldp advertise-labels...12 mpls ldp advertise-labels old-style...14 mpls ldp backoff...15 mpls ldp bfd...16 mpls ldp dampening...16 mpls ldp dampening-acl...17 mpls ldp discovery hello...18 mpls ldp discovery targeted-hello...19 mpls ldp discovery transport-address...19 mpls ldp egress...21 mpls ldp enable connect-with-dod...22 mpls ldp explicit-null...22 mpls ldp graceful-restart...23 mpls ldp holdtime...24 mpls ldp neighbor password...25 mpls ldp request-labels...25 mpls ldp router-id...26 mpls ldp style...27 mpls ldp target-session...28 mpls xconnect...28 show mpls forwarding-table...29 show mpls l2transport binding...30 show mpls l2transport vc...31 show mpls label range...33

4 show mpls ldp backoff...33 show mpls ldp bindings...34 show mpls ldp dampening summary...36 show mpls ldp flap-statistics summary...37 show mpls ldp discovery...38 show mpls interface...39 show mpls ldp neighbor...39 show mpls ldp graceful-restart...41 show mpls ldp parameters...42 MPLS BGP VPN Configuration...43 description...43 export map...44 import map...44 ip vrf...45 ip vrf forwarding...45 maximum routes...46 monitor session...46 monitor session destination...47 monitor session source...47 rd...47 route-target...48 show ip protocol routing vrf...48 show ip protocol routing vrf-summary...49 show ip route mng...49 show ip route vpn...49 show ip route vrf...50 show ip route vrf-summary...50 show ip vrf...50 show monitor session...51 tunnel checksum...51 tunnel destination...52 tunnel key...52 tunnel mode...52 tunnel sequence...53 tunnel source...53 VPLS Configuration...55 clear flowstat vpls...55 clear flowstat vpws...56 clear mac-table vfi...56 peer...57

5 pwtype...58 show mac-filter...59 show mac-table...59 show mpls l2transport vc vpls...60 show mpls l2transport vpn summary...62 show vfi...62 show vfi brief...63 stp-tunnel enable...64 vcid...64 vpls apply-mac-filter...65 vfi...66 vfi mspw...66 vpls mac-filter...67 vlan range...68 xconnect vfi...68 MPLS Traffic Engineering Configuration...69 clear ip rsvp authentication...70 ip explicit-path...70 ip rsvp authentication...71 ip rsvp authentication challenge...71 ip rsvp authentication challenge-imp...72 ip rsvp authentication lifetime...72 ip rsvp authentication key passphrase...73 ip rsvp authentication type...73 ip rsvp authentication window-size...74 ip rsvp bandwidth...74 ip rsvp bfd...75 ip rsvp signalling hello graceful-restart...76 ip rsvp signalling hello graceful-restart refresh interval...76 ip rsvp signalling hello graceful-restart refresh misses ip rsvp signalling hello graceful-restart timers recovery-time...77 ip rsvp signalling hello graceful-restart timers restart-time...78 ip rsvp signalling refresh interval...78 ip rsvp signalling refresh misses...79 mpls oam(global Configuration)...79 mpls oam(interface Configuration)...80 mpls static tunnel...80

6 mpls traffic-eng ds-te...81 mpls traffic-eng ds-te bc-mode...81 mpls traffic-eng ds-te exp-maps...82 mpls traffic-eng ds-te te-class...82 mpls traffic-eng signaling advertise implicit-null...83 mpls traffic-eng tunnels(global Configuration)...84 mpls traffic-eng tunnels(interface Configuration)...84 show ip rsvp authentication...85 show ip explicit-path...86 show ip rsvp hello graceful-restart...87 show ip rsvp refresh parameter...87 show mpls traffic-eng autoroute...88 show mpls traffic-eng ds-te exp-map...88 show mpls traffic-eng ds-te te-class...89 show mpls traffic-eng interface detail...90 show mpls traffic-eng tunnels...91 show mpls traffic-eng tunnels remote-tunnel...93 tunnel mpls oam back-up-lsp tunnel...94 tunnel mpls oam tunnelid...94 tunnel mpls oam type...95 tunnel mpls traffic-eng autoroute announce...95 tunnel mpls traffic-eng autoroute metric...96 tunnel mpls traffic-eng bandwidth...97 tunnel mpls traffic-eng bfd...97 tunnel mpls traffic-eng class-type...98 tunnel mpls traffic-eng path-option...98 tunnel mpls traffic-eng record-route...99 tunnel mpls traffic-eng tunnels priority tunnel static ingress FRR Configuration ip rsvp signalling hello ip rsvp signalling hello refresh interval ip rsvp signalling hello refresh misses mpls traffic-eng backup_tunnel show ip backup route show ip rsvp hello instance detail show ip rsvp hello instance summary show mpls traffic-eng fast-reroute show mpls traffic-eng interface tunnel mpls traffic-eng fast-reroute

7 About This Manual Intended Audience What Is in This Manual This manual provides procedures and guidelines that support the operation of ZXR10 router and Ethernet switch. This manual is intended for engineers and technicians who perform operation activities on ZXR10 router and Ethernet switch. This manual contains the following chapters: Chapter Chapter 1, Command Introduction Chapter 2, MPLS LDP Configuration Chapter 3, MPLS VPN Configuration Chapter 4, VPLS Configuration Chapter 5, MPLS Traffic Engineering Configuration Chapter 6, FRR Configuration Summary This describes the use method of the command manual, command description, format convention, auxiliary function and mode. Describes how to configure MPLS route switching and show commands, including the MPLS and tunnel configuration commands. Describes how to configure MPLS VPN and show commands. Describes how to configure VPLS and show commands. Describes how to configure MPLS traffic engineering and show commands. Describes how to configure FRR and show commands. Related Documentation The following documentation is related to this manual: ZXR10 Router/Ethernet Switch Command Manual (Command Index Volume) ZXR10 Router/Ethernet Switch Command Manual (Ethernet Switch Volume) ZXR10 Router/Ethernet Switch Command Manual (Basic Configuration Volume I) ZXR10 Router/Ethernet Switch Command Manual (Basic Configuration Volume II) ZXR10 Router/Ethernet Switch Command Manual (Basic Configuration Volume III) ZXR10 Router/Ethernet Switch Command Manual (Remote Access Volume) ZXR10 Router/Ethernet Switch Command Manual (IPv4 Routing Volume I) ZXR10 Router/Ethernet Switch Command Manual (IPv4 Routing Volume II) Confidential and Proprietary Information of ZTE CORPORATION i

8 ZXR10 Command Manual (MPLS Volume) ZXR10 Router/Ethernet Switch Command Manual (QoS Volume) ZXR10 Router/Ethernet Switch Command Manual (Security Volume) ZXR10 Router/Ethernet Switch Command Manual (Network Management Volume) ZXR10 Router/Ethernet Switch Command Manual (Multicast Volume) ZXR10 Router/Ethernet Switch Command Manual (IPv6 Volume) ZXR10 Router/Ethernet Switch Command Manual (Voice and Video Service Volume) ii Confidential and Proprietary Information of ZTE CORPORATION

9 C h a p t e r 1 Command Introduction Table of Contents Manual Use Guide... 1 of Man-Machine Commands... 1 Auxiliary Function... 2 Command Mode... 3 Manual Use Guide The commands in other volumes are classified by functional modules, and each functional module corresponds to a chapter and the commands in the chapter are organized in the form of level 2 directory and in the order of a z. To search a command, do as follows: 1. Find the desired command by referring to ZXR10 Router/Ethernet Switch Command Manual Command Index. 2. Find command details by the volume, chapter/section and page of the obtained command. of Man-Machine Commands Each MML command is described by the following items: Function It describes the function implemented by this command. Command Mode It describes the mode in which this command can be executed. Format It describes the complete format of this command, including the no format if possible. Parameter It describes parameters in this command in the form and prescribes the range and default value. If different products have Confidential and Proprietary Information of ZTE CORPORATION 1

10 ZXR10 Command Manual (MPLS Volume) different parameter ranges or default values, an additional form is used for description. Default The default value is available in the case that this command is not set. The default parameter value is not described here for value selection. Additional description shall be given if different products have different default values. Instructions First describes the platform version information about this command. For example, The platform version X.X.XX or later supports this command indicates this command is provided from the beginning of the platform version X.X.XX. This command is provided from the platform version 2.6 by default. Second describes the use method and precautions of this command. It describes the use of this command in an example. Related Commands Lists the command(s) related to this command. History Command It describes history version information related to this command if a command is changed after version upgrade. Do not describe the history command if this entry does not exist. Auxiliary Function The auxiliary function for ZXR10 devices is as follows. 1. In any command mode, enter a question mark (?) after the DOS prompt of the system, a list of available commands in the command mode will be displayed. With the context-sensitive help function, the keywords and parameter lists of any commands can be obtained. i. In any command mode, enter a question mark "?" after the DOS prompt of the system, and a list of all commands in the mode and the brief description of the commands will be displayed. ii. Input the question mark behind a character or character string to view the list of commands or keywords beginning with this character or character string. Note that there is no space between the character (string) and the question mark. iii. Press TAB behind the character string. If the command or keyword beginning with this character string is unique, it shall be completed with a space at the end. Note that there is no space between the character string and the TAB. 2 Confidential and Proprietary Information of ZTE CORPORATION

11 Chapter 1 Command Introduction iv. Input a question mark after a command, a keyword or a parameter, the next keyword or parameter to be input will be listed, and also a brief explanation will be given. Note that a space must be entered before the question mark. 2. If incorrect command, keyword or parameter is input, the error isolation is offered with ^ in the user interface after you press ENTER. The ^ is below the first character of the input incorrect command, keyword or parameter. 3. ZXR10 router/ethernet switch allows the command or keyword to be abbreviated into a character or character string that uniquely identifies this command or keyword. For example, the show command can be abbreviated to sh or sho. 4. The user interface supports the function of recording input commands. A maximum of ten history commands can be recorded. The function is very useful in re-invocation of a long or complicated command or ingress. To re-invoke a command from the record buffer, conduct one of the following operations, as shown below. Command Press CTRL-P or the up arrow key Press CTRL-N or the down arrow key Function Re-invokes the latest command in the record buffer. Repeat these keys to invoke old commands forwards. Rolls the commands downward. When the last command line is reached, one more operation will roll the commands from the begging of the buffer cyclically. In any mode, execute the show history command to list the latest commands input in this mode. Command Mode The command modes in this manual are shown below. Mode Prompt Admission Mode Entry Command Functions Exec mode ZXR10> enters directly after logging the system Views simple information Privileged mode ZXR10# Exec mode enable Configures system parameters Global configuration mode ZXR10(config)# Privileged mode configure terminal Configures global service parameters Confidential and Proprietary Information of ZTE CORPORATION 3

12 ZXR10 Command Manual (MPLS Volume) Mode Prompt Admission Mode Entry Command Functions Interface configuration mode ZXR10(configif)# Global configuration mode interface Configures port parameters and selects a port type depending on the keyword Subinterface mode ZXR10 (configsubif)# Global configuration mode interface Configures subinterface parameters of the NPCI/NPCT VLAN database configuration mode ZXR10(vlandb)# Privileged mode vlan datab ase Creates or deletes VLANs in batches VLAN configuration mode ZXR10(configvlan)# Global configuration mode vlan Configures VLAN parameters MSTP configuration mode ZXR10(configmstp)# Global configuration mode spanning-t ree mst conf iguration Configures MSTP parameters Basic ACL configuration mode ZXR10(configbasic-acl)# Global configuration mode acl basic Defines basic ACL rule Extended ACL configuration mode ZXR10(configext-acl)# Global configuration mode acl extend Defines extended ACL rule Line configuration mode ZXR10(configline)# Global configuration mode line console 0 line <1~64 >(GAR) Configures parameters related to serial port and telnet connection Layer 2 ACL configuration mode ZXR10(configlink-acl)# Global configuration mode acl link Defines layer 2 ACL rule 4 Confidential and Proprietary Information of ZTE CORPORATION

13 Chapter 1 Command Introduction Mode Prompt Admission Mode Entry Command Functions Hybrid ACL configuration mode ZXR10(confighybd-acl)# Global configuration mode acl hybrid Defines hybrid ACL rule Router standard ACL mode ZXR10 (configstd-nacl)# Global configuration mode ip access-list Defines router standard ACL rule Router extended ACL mode ZXR10 (configext-nacl)# Global configuration mode ip access-list Defines router extended ACL rule Route configuration mode ZXR10(configrouter)# Global configuration mode router rip router ospf Configures RIP parameters Configures OSPF parameters router isis Configures IS-IS parameters router bgp Configures BGP parameters router pimsm Configures PIM-SM parameters ipv6 router rip Configures RIPng parameters. ipv6 router ospf Configures OSPFv3 parameters VRF configuration mode ZXR10(configvrf)# Global configuration mode ip vrf Configures VRF parameters VFI configuration mode ZXR10(configvfi)# Global configuration mode vfi Configures VPLS related parameters Confidential and Proprietary Information of ZTE CORPORATION 5

14 ZXR10 Command Manual (MPLS Volume) Mode Prompt Admission Mode Entry Command Functions IPv4 address family configuration mode ZXR10(configrouter-af)# Route configuration mode (RIP) Route configuration mode (BGP) address-fam ily ipv4 vrf address-fam ily vpnv4 address-fam ily ipv4 vrf Configures RIP VRF parameters Configures BGP VPN and VRF parameters IPv6 unicast address family configuration mode ZXR10(configrouter-af)# Route configuration mode (BGP4+) Route configuration mode (IS- ISv6) address-fam ily ipv6 address-fam ily ipv6 Configures BGP4+ unicast address family Configures IS-ISv6 address family Route map configuration mode ZXR10(configroute-map)# Global configuration mode route-map Configures route map matching item and operation Channelization configuration mode ZXR10(configcontrol)# Global configuration mode control Configures channelization for ce1, ce3 and cpos3 Dial peer configuration mode ZXR10(configvoip100)# Global configuration mode dial-peer voice Configures business related to integrated service Voice port configuration mode ZXR10(configvoice-port)# Global configuration mode voice-port Configures voice service IPSec configuration mode ZXR10(configipsec)# Global configuration mode ipsec Configures IPv6 IPSec protection Diagnosis mode ZXR10(diag)# Privileged mode diagnose Tests CPU and memory usage 6 Confidential and Proprietary Information of ZTE CORPORATION

15 C h a p t e r 2 MPLS LDP Configuration Table of Contents clear mpls ldp... 8 clear mpls ldp dampening... 8 clear mpls ldp flap... 9 mpls ip (Global Configuration)... 9 mpls ip(interface Configuration)...10 mpls label range...10 mpls ldp access-fec...11 mpls ldp advertise-labels...12 mpls ldp advertise-labels old-style...14 mpls ldp backoff...15 mpls ldp bfd...16 mpls ldp dampening...16 mpls ldp dampening-acl...17 mpls ldp discovery hello...18 mpls ldp discovery targeted-hello...19 mpls ldp discovery transport-address...19 mpls ldp egress...21 mpls ldp enable connect-with-dod...22 mpls ldp explicit-null...22 mpls ldp graceful-restart...23 mpls ldp holdtime...24 mpls ldp neighbor password...25 mpls ldp request-labels...25 mpls ldp router-id...26 mpls ldp style...27 mpls ldp target-session...28 mpls xconnect...28 show mpls forwarding-table...29 show mpls l2transport binding...30 show mpls l2transport vc...31 show mpls label range...33 show mpls ldp backoff...33 show mpls ldp bindings...34 show mpls ldp dampening summary...36 show mpls ldp flap-statistics summary...37 show mpls ldp discovery...38 show mpls interface...39 show mpls ldp neighbor...39 show mpls ldp graceful-restart...41 show mpls ldp parameters...42 Confidential and Proprietary Information of ZTE CORPORATION 7

16 ZXR10 Command Manual (MPLS Volume) clear mpls ldp Use this command to reset the LDP router or its connection with some neighbor. Privileged EXEC clear mpls ldp [neighbor <ip-address>] neighbor <ip-addre ss> IP address of the neighbor, in the dotted decimal format Instructions After this command is configured, the router is reset and interrupted, and all LDP sessions are reestablished. The recheck of the access-fec and egress policies, advertisement and request policies, and the explicit pop-up label advertisement policy is performed on all FECS. The resetting of the session with the designated neighbor means the interruption and the reestablishment of the LDP session with this neighbor only. The recheck is only performed on the policy related with this neighbor (advertisement, request, and exp-null policies). This example describes how to reset LDP. ZXR10#clear mpls ldp This example describes how to reset the session with the LSR whose router ID is ZXR10#clear mpls ldp neighbor clear mpls ldp dampening Use this command to clear LDP routes dampening and unsuppress the suppressed routes. Privileged EXEC clear mpls ldp dampening [<ip-address><net-mask>] <ip-address> The network IP address relates to clear damp information, in the dotted decimal notation <net-mask> Network mask, in the dotted decimal notation Instructions After this command is configured, the router will clear and reset LDP dampening information already generated, and the router will unsuppress the suppressed LSP; the router will reset flapping suppress information of some specified LSP, and only the dampening information of this LSP will be cleared. If this LSP is suppressed, the router will unsuppress it. This example describes how to reset LDP dampening information. ZXR10#clear mpls ldp dampening 8 Confidential and Proprietary Information of ZTE CORPORATION

17 Chapter 2 MPLS LDP Configuration This example describes how to reset dampening information of a LSP. ZXR10#clear mpls ldp dampening clear mpls ldp flap Use this command to clear the flapping statistic information of LDP routers. Privileged EXEC clear mpls ldp flap [<ip-address><net-mask>] <ip-address> Network IP address, in the dotted decimal format <net-mask> Network mask, in the dotted decimal format Instructions After this command is configured, the router will clear the count of the flapping of LDP entities where flapping has already occurred, and the router will reset the count of the flapping of some specified LSP; only the count of the flapping of this LSP is cleared and reset and it will be recounted from 0. This example describes how to rest LDP flapping statistic information. ZXR10#clear mpls ldp flap This example describes how to reset the flapping statistic information of a LSP. ZXR10#clear mpls ldp flap mpls ip (Global Configuration) Use this command to enable LDP to establish an LSP along a common hop-by-hop routing path. Disable LDP with the no form of this command. Global configuration mpls ip no mpls ip LDP is disabled by default. Instructions his command enables LDP to establish an LSP along a common hop-by-hop routing path. In addition, it is necessary to enable LDP on the interface to realize dynamic label switching on the interface. Confidential and Proprietary Information of ZTE CORPORATION 9

18 ZXR10 Command Manual (MPLS Volume) Use the no form of this command to disable LDP to establish an LSP along a common hop-by-hop routing path no matter whether LDP is enabled on the interface or not. mpls ip(interface Configuration) Use this command to enable LDP label switching on the interface. Disable LDP label switching with the no form of this command. Interface configuration mpls ip no mpls ip This command is disabled by default. Instructions This command enables LDP to exchange labels on the interface of layer 3. Once the command is configured, LSR starts to periodically send hello messages on the interface. When packets to the destination network obtain the outgoing label to some destination network, the outgoing label will be added into the packets and the packets will be forwarded from this interface. Note that this command will take effect only after mpls ip is configured in global configuration mode. Related Commands The no form of this command make packets routed from this interface no more carry labels and cease the label switching on the interface. This example describes how to enable LDP on the interface fei_1/1. ZXR10(config)#mpls ip ZXR10(config)#interface fei_1/1 ZXR10(config-if)#mpls ip show mpls interface show mpls ldp discovery mpls label range Use this command to configure a label range for LDP. Restore default with the no form of this command. Global configuration mpls label range <min-label><max-label> no mpls label range <min-label> Minimal available label, range: 16~ <max-label> Maximal available label, range: 16~ Confidential and Proprietary Information of ZTE CORPORATION

19 Chapter 2 MPLS LDP Configuration This example describes how to set the label range as 1000~ Related Commands ZXR10(config)#mpls label range show mpls label range mpls ldp access-fec Use this command to control LDP s creation of FEC for which destination networks and make sure whether FEC can be created for routing networks obtained by BGP; this command controls FEC filter policy. To disable this feature, use the no form of this command. Global configuration mpls ldp access-fec {for <prefix-access-list> host-route-o nly bgp force} no mpls ldp access-fec [bgp] for <prefix-access-li st> Destination network to be filtered, basic ACL: 1~99 and 1000~1499 host-route-only bgp force Creates FEC only for the destination network (host address) with 32-bit mask Creates FEC for the specified route network obtained from BGP Takes effect immediatedly LDP creates FEC for all destination networks except the route networks obtained by BGP. Instructions By default, LDP creates FEC for all destination networks except the route networks obtained by BGP. However, the number of networks may be so large that it needs to filter the network for which FEC need not be created ; or the network administrator wants to control the creation of FEC, that is, FEC is created only for the authorized network. This command can realize such functions. The mpls ldp access-fec for <prefix-access-list> command can make filter be based on access list. FEC can be created for all destination addresses allowed by the access list. Only standard ACL is supported now. The mpls ldp access-fec host-route-only command make FEC be created only for the destination address with 32-bit mask. The mpls ldp access-fec host-route-only command is especially valid in the MPLS/BGP VPN application, because under such application, LDP only exchanges the label of the next-hop address (that is, the outer label, the label to the PE) of VPN routes. The mpls ldp access-fec host-route-only command can effectively decrease the number of FECs. This command does not collide with the above two policies. By default, FEC is not created for route networks obtained by Confidential and Proprietary Information of ZTE CORPORATION 11

20 ZXR10 Command Manual (MPLS Volume) BGP. This command can make FEC also be created for route networks obtained by BGP. Use the mpls ldp access-fec command to configure policy but it does not take effect immediately. But The mpls ldp acce ss-fec force command makes the configuration take effect immediately. Tip: mpls ldp access-fec for <prefix-access-list> and mpls ldp acce ss-fec host-route-only are mutually exclusive. Thus the network administrator can choose only one control policy at any time. 1. This example describes how to configure the router to create FEC only for the destination address with 32-bit mask: Related Commands ZXR10(config)#mpls ldp access-fec host-route-only 2. This example describes how to configure the router to create the labels of networks and only and they act immediately. ZXR10(config)#ip access-list standard 10 ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#exit ZXR10(config)#mpls ldp access-fec for This example describes how to configure the router to create FEC for route networks obtained by BGP. ZXR10(config)#mpls ldp access-fec bgp show mpls ldp binding show running-config mpls ldp advertise-labels Use this command to control the distribution of locally assigned labels (incoming labels) through LDP. This command controls which destination network segment labels are advertised to which neighbors. To disable this feature, use the no form of this command. Global configuration mpls ldp advertise-labels [for <prefix-access-list>[to <peer-a ccess-list>]] no mpls ldp advertise-labels [for <prefix-access-list>[to <pee r-access-list>]] for <prefix-access-li st> Destination network label to be advertised, basic ACL: 1~99 and 1000~1499 to <peer-access-list> Advertises which labels to which neighbors, basic ACL: 1~99 and 1000~ Confidential and Proprietary Information of ZTE CORPORATION

21 Chapter 2 MPLS LDP Configuration Instructions All labels are advertised to all neighbors by default. The no mpls ldp advertise-labels command without any optional parameter forbids the distribution of any locally assigned labels. To restore the distribution of all locally assigned labels, use the mpls ldp advertise-labels command without any optional parameter. Only standard ACL is supported now. Up to 99 mpls ldp advertise-labels commands can be executed, those commands work together to determine how LSR advertises local labels. In the case that multiple commands are configured, the following rules should be followed: 1. Each mpls ldp advertise-labels command has a (prefix acl, peer acl) pair. The access list pair is (none, none) when no optional parameter is specified; and it is (prefix-acl, none) when the optional parameter is specified but without the keyword no. 2. There is only one (prefix acl, peer acl) pair applied to each prefix in accordance with the following rules: i. One (prefix acl, peer acl) pair applies to one prefix only when prefix acl matches the prefix, and the match condition is that prefix acl permits the prefix. ii. In the case that there is more than one (prefix acl, peer acl) pair matching a prefix; the first (prefix acl, peer acl) pair applies to the prefix (in the sequence configured in show running-config). 3. When LSR is to advertise a prefix label, it executes the following operations: i. Finds the (prefix acl, peer acl) pair applied to the prefix. ii. In the case that there is no (prefix acl, peer acl) pair applied to the prefix, the label is not advertised to any neighbor if the no mpls ldp advertise-labels command is executed; otherwise, the label is advertised to all neighbors. iii. In the case that one (prefix acl, peer acl) pair applied to the prefix, the label is not advertised to any neighbor if prefix acl denies the prefix. iv. If prefix acl permits the prefix and there is no peer acl (namely none), the label is advertised to all neighbors. v. If prefix acl permits the prefix and there is one peer acl, the label is advertised to all neighbors permitted by peer acl. Tip: This command takes effect immediately after its configuration. The command can be configured only when the network in stable status. Otherwidse, it could not take effect immediately. Do not use this command frequently. 1. This example describes how to forbid the router from advertising any label to any neighbor. ZXR10(config)#no mpls ldp advertise-labels Confidential and Proprietary Information of ZTE CORPORATION 13

22 ZXR10 Command Manual (MPLS Volume) Related Commands 2. This example describes how to make the router advertise labels of networks and to all neighbors. ZXR10(config)#ip access-list standard 10 ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#exit ZXR10(config)#mpls ldp advertise-labels for 10 ZXR10(config)#no mpls ldp advertise-labels 3. This example describes how to make the router advertise the label to LSR only and advertise the label to LSR only. ZXR10(config)#ip access-list standard 10 ZXR10(config-ext-nacl)#permit ZXR10(config-ext-nacl)#exit ZXR10(config)#ip access-list standard 11 ZXR10(config-ext-nacl)#permit ZXR10(config-ext-nacl)#exit ZXR10(config)#ip access-list standard 20 ZXR10(config-ext-nacl)#permit ZXR10(config-ext-nacl)#exit ZXR10(config)#ip access-list standard 21 ZXR10(config-ext-nacl)#permit ZXR10(config-ext-nacl)#exit ZXR10(config)#mpls ldp advertise-labels for 10 to 11 ZXR10(config)#mpls ldp advertise-labels for 20 to 21 mpls ldp advertise-labels old-style mpls ldp advertise-labels old-style Instructions Use this command to allow the <prefix-access-list> argument after the keyword for in the mpls ldp advertise-labels command to be interpreted according to the earlier Cisco IOS software releases. To disable this feature, use the no form of this command. Global configuration mpls ldp advertise-labels old-style no mpls ldp advertise-labels old-style By default, ZXR10 interprets the parameter <prefix-access-list> after the keyword for according to the rule described in the instruction of the mpls ldp advertise-labels command. Generally, the parameter <prefix-access-list> after the keyword for conforms to the following rules: One (prefix acl, peer acl) pair applies to a prefix only when the prefix ACL matches the prefix, and the match condition is that the prefix ACL permits the prefix. This is the general processing method of access list. In the early Cisco IOS version, however, the parameter <prefix-ac cess-list> after the keyword for in the mpls ldp advertise-labels command is interpreted in a different way as follows: One (prefix acl, peer acl) pair applies to a prefix only when the prefix ACL matches the prefix, and the match condition is that 14 Confidential and Proprietary Information of ZTE CORPORATION

23 Chapter 2 MPLS LDP Configuration Related Commands prefix ACL permits or denies the prefix explicitly. The parameter prefix ACL with permit any or deny any matches all prefixes. The difference between the Cisco early rules and the general processing method of access list is that: The explicit deny (including deny any) makes the (prefix acl, peer acl) pair applied to the prefix, while the implicit deny does not take any effect. If users are used to the early rule, the mpls ldp advertise-labels old-style command can be used. This example describes how to configure the router to use the early rules of Cisco to interpret the parameter <prefix-access-list> after the keyword for in the mpls ldp advertise-labels command. ZXR10(config)#mpls ldp advertise-labels old-style mpls ldp advertise-labels mpls ldp backoff Use this command to configure the parameter of the LDP session backoff reestablishment mechanism. To restore default, use the no form of this command. Global configuration mpls ldp backoff <initial-backoff><maximum-backoff> no mpls ldp backoff <initial-backoff> Initial backoff time in seconds, range: 10~65535, default: 15 seconds <maximum-backoff> Maximum backoff time in seconds, range: 10~65535, default: 120 seconds Instructions The LDP session backoff reestablishment mechanism prevents two LSRs with incompatible configurations falling into the endless cycle form the establishment of the session to the failure. If the establishment of the session fails because of the incompatible configurations of the two LSRs, the two LSRs will put off their attempt to establish a session next time (namely back off). The backoff time is exponentially increased until it reaches the maximum backoff. The default value of the parameter of the LDP session backoff reestablishment mechanism is defined by the LDP protocol specifications. There is no need to change tyhe default configuration until the default parameter indeed causes bad behaviors. This example describes how to set the initial backoff time as 30 seconds and the maximum backoff time as 240 seconds. ZXR10(config)#mpls ldp backoff Confidential and Proprietary Information of ZTE CORPORATION 15

24 ZXR10 Command Manual (MPLS Volume) Related Commands show mpls ldp backoff show mpls ldp parameters mpls ldp bfd Use this command to configure the corresponding parameters of LDP LSP BFD and trigger the bfd session for creating LSP. Global configuration mpls ldp bfd <FEC address><mask length> interval <interval> min_rx <min_rx> Multiplier <multiplier> no mpls ldp bfd <FEC address><mask length> interval <inter val> min_rx <min_rx> Multiplier <multiplier> <FEC address> Specifies the LSP address for creating bfd. It is generally a remote address network <mask length> <interval> <min_rx> <multiplier> Specifies the sub network mask length of remote address. range: 1~32 Specifies the minimal sending interval, in milliseconds. range: 50~999 Specifies the minimal receiving interval, in milliseconds. range: 50~999 Specifies the multiplier when the detection overtimes. range: 3~50 Instructions Related Commands This command triggers the creation of LSP BFD, and specifies the network address of LSP. This example describes how to triggers the creation of BFD of LSP ZXR10(config)#mpls ldp bfd interval 50 min_rx 50 multiplier 3 show bfd nei ldp-lsp mpls ldp dampening Use this command to configure LDP to enable the route dampening or modify the various LDP route dampening factors. Disable this command by using no form of this command. Global configuration mpls ldp dampening [<half-life><reuse><suppress><max-su ppress-time>] no mpls ldp dampening 16 Confidential and Proprietary Information of ZTE CORPORATION

25 Chapter 2 MPLS LDP Configuration <half-life> <reuse> <suppress> <max-suppress-ti me> Time (in minutes) after which a penalty is decreased by half after the half-life period (which is 15 minutes by default). The range of the half-life period is 1~45 minutes Reuse values based on accumulated penalties. If the penalty for a flapping route decrease enough to fall below this value, the route is unsuppressed. range: 1~20000, default: 750 A route is suppressed when its penalty exceeds this limit. range: 1~20000, default: 2000 Maximum time (in minutes) a route can be suppressed. range: 1~255, default: 60 minutes Instructions Related Commands This command is disabled by default. If there is no parameter after this command, the LDP route dampening will be valid with default values. The parameters have to be configured together. If any one parameter is configured, then other parameters have to be configured. The parameter <suppre ss> value should be larger than the <reuse> value. This example describes how to enable LDP route dampening. ZXR10(config)#mpls ldp dampening show running-config mpls ldp dampening-acl Use this command to control which destination networks for which LDP creates LDP dampening entities. configure the destination networks for which the LDP creates the LDP dampening entity. To disable this feature, use the no form of this command, and the no form of this command will take effect immediately. Global configuration mpls ldp dampening-acl {for <prefix-access-list> force} no mpls ldp dampening-acl for <prefix-access-li st> Specifies which networks to be filtered. basic ACL: 1~99 and 1000~1499 force Takes effect immediately Instructions The filtering of flapping is valid only when the function of LDP dampening takes effect. By default, LDP records the dampening information for flapping destination networks. By default, LDP records the dampening information for flapping destination networks. However, there are so many networks in Confidential and Proprietary Information of ZTE CORPORATION 17

26 ZXR10 Command Manual (MPLS Volume) the actual network that it needs to filter the networks for which there is no need to record the dampening information. The mpls ldp access-fec force command takes effect immediately. 1. This example describes how to record the dampening information for LSP of networks and Related Commands ZXR10(config)#ip access-list standard num 10 ZXR10(config-std-acl)#permit ZXR10(config-std-acl)#permit ZXR10(config-std-acl)#exit ZXR10(config)#mpls ldp dampening-acl for 10 ZXR10(config)#mpls ldp dampening-acl force 2. This example describes how to restore the default settings. ZXR10(config)#no mpls ldp dampening-acl ZXR10(config)#mpls ldp dampening-acl force show running-config mpls ldp discovery hello Use this command to configure the interval for sending LDP hello discovery messages and the timeout time of the discovered LDP neighbor between the directly connected LSRs. To restore default, use the no form of this command. Global configuration mpls ldp discovery hello {holdtime <holdtime> interval <int erval>} no mpls ldp discovery hello {holdtime interval} holdtime <holdtime> Holdtime (in seconds) of the status if the neighbor discovered by LDP can not receive any subsequent hello messages, range: 1~ , default: 15 seconds interval <interval> Interval of LDP s periodically sending hello messages (in seconds), range: 1~ , default: 5 seconds This example describes how to set the status holdtime as 100 seconds and the interval for sending hello messages as 20 seconds. ZXR10(config)#mpls ldp discovery hello holdtime 100 ZXR10(config)#mpls ldp discovery hello interval Confidential and Proprietary Information of ZTE CORPORATION

27 Chapter 2 MPLS LDP Configuration Related Commands show mpls ldp parameter mpls ldp discovery targeted-hello Use this command to configure the interval for sending LDP hello discovery messages and the timeout time of the discovered LDP neighbor between the indirectly connected LSRs. To restore default, use the no form of this command. Global configuration mpls ldp discovery targeted-hello {holdtime <holdtime> interval <interval>} no mpls ldp discovery targeted-hello {holdtime interval} holdtime <holdtime> Holdtime of the status if the neighbor discovered by LDP can not receive any subsequent hello messages (in seconds), range: 1~ , default: 45 seconds interval <interval> Interval of LDP s periodically sending hello messages (in seconds), range: 1~ , default: 15 seconds Instructions This command is supported after the platform version Related Commands This example describes how to set the status holdtime as 100 seconds and the interval for sending hello messages as 20 seconds. ZXR10(config)#mpls ldp discovery targeted-hello holdtime 100 ZXR10(config)#mpls ldp discovery targeted-hello interval 20 show mpls ldp parameter mpls ldp discovery transport-address Use this command to configure the transmission address parameter carried in hello messages on the layer 3 interface. To disable this feature, use the no form of this command. Interface configuration mpls ldp discovery transport-address {interface <ip-addre ss>} no mpls ldp discovery transport-address Confidential and Proprietary Information of ZTE CORPORATION 19

28 ZXR10 Command Manual (MPLS Volume) interface <ip-address> Specifies the interface address as the transmission address advertised in the hello message Specifies some address as the transmission address advertised in the hello message Instructions By default, ZXR10 takes the router identifier as the transmission address advertised in the hello message on the frame interface. A TCP connection must be established before an LDP session is set up between LDP routers, which requires every router know the peer transmission address (IP address). The LDP discovery mechanism enables the LDP router to advertise its own transmission address used for establishing TCP connection to the peer. The advertisement of the transmission address can be explicit (that is, the transmission address appears in the hello message) or implicit (that is, there is no transmission address appearing in the hello message). The receiver of hello messages takes the source IP address of the hello message as the transmission address to set up TCP connection with the sender. The mpls ldp discovery transport-address command provides a way to change the default behavior of the router. If the interface parameter is used, LDP advertises the IP address of the interface in the hello message on the interface. If the <ip-address> parameter is used, the LDP advertises the designated IP address in the hello message on the interface. If the configuration of the transmission address is changed during the precess of the running of the interface, ZXR10 router will delete the current adjacency relationship on the interface. If there is no other adjacent relationship maintaining the session maintained by the current adjacent relationship on the interface (multiple links do not exist), the session will be closed. The adjacency relationship (and the session) will be reestablished after a hello message is received from the peer. Tip: If there are multiple links between routers, these routers must advertise the same transmission address on the corresponding interfaces. Related Commands This example describes how to use the IP address of the interface as the transmission address on the interface oc3_2/1, and set the transmission address as on the interface oc3_4/1. ZXR10(config#)interface oc3_2/1 ZXR10(config-if)#mpls ldp discovery transport-address interface ZXR10(config)#interface oc3_4/1 ZXR10(config-if)#mpls ldp discovery transport-address show mpls ldp discovery show mpls ldp neighbor 20 Confidential and Proprietary Information of ZTE CORPORATION

29 Chapter 2 MPLS LDP Configuration mpls ldp egress Use this command to control LDP to allocate popup labels to the designated indirectly connected destination networks (that is, the egress control policy). To disable this feature, use the no form of this command. Global configuration mpls ldp egress {for <prefix-access-list> nexthop <nexthopaccess-list>} no mpls ldp egress {for nexthop} for <prefix-access-li st> Specifies which destination networks to which popup labels are allocated, range: 1~99 nexthop <nexthop-a ccess-list> Specifies the nexthop of the destination networks, range: 1~99 Instructions By default, LDP allocates popup labels only to the directly connected networks and makes advertisements to the peer LSR. By default, LDP allocates popup labels only to the directly connected networks and makes advertisements to the peer LSR. For destination networks not directly connected, LDP acquires the idle label from the label pool as the incoming label and chooses the label value in the mapping message sent by the next hop of the route as the outgoing label. If local router is an edge LSR and the router of nexthop may be a non-mpls router, local LSR cannot bind the outgoing label, and the received label packet be will discarded at the data layer because there is no outgoing label according to the MPLS framework protocol. In this case, it is necessary to configure the egress control policy to specify LDP to allocate popup labels to destination networks flowing out of MPLS network, and make advertises to the upstream LSR. Thus upstream LSR will forward the traffic from the MPLS network in the form of IP packets (or explicitly popup label packets). There are two kinds of control policies: based on destination network segment and based on next hop. 1. The egress control policy based on destination networks (mpls ldp egress for <prefix-access-list>) directly specifies which destination where local LSR is terminated. 2. The egress control policy based on next hop (mpls ldp egress nexthop <nexthop-access-list>) specifies which neighbors are non-mpls routers so that the traffic of these neighbors as next hops is the traffic out of MPLS. Local router allocates popup labels for this traffic. As long as a route meets either of the two policies, that is, the destination prefix is permitted by <prefix-access-list> or the next hop is permitted by <nexthop-access-list>, the LDP will allocate a popup label to it. The policy takes effect only on the refreshed FECs after the configuration and does not reallocate labels to the existing FECs. There- Confidential and Proprietary Information of ZTE CORPORATION 21

30 ZXR10 Command Manual (MPLS Volume) fore, it is not recommended to configure this command when the system is running to avoid inconsistency. 1. The router allocates popup labels to all subnet routes in networks /16 and /16, and allocates popup labels to all subnet routes in network /16 but not in /24. ZXR10(config)#ip access-list standard 10 ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#deny ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#exit ZXR10(config)#mpls ldp egress for The router allocates popup labels to all destination networks whose next hop are : ZXR10(config)#ip access-list standard 11 ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#exit ZXR10(config)#mpls ldp egress nexthop 11 mpls ldp enable connect-with-dod Instructions Use this command to set the compatibility of the label advertisement mode. To disable this feature, use the no form of this command. Global configuration mpls ldp enable connect-with-dod no mpls ldp enable connect-with-dod Use this command to make the router to interconnect with LSR adopting the DOD mode. mpls ldp explicit-null Use this command to make the router which is supposed to advertise implicit null labels advertise explicit null labels. To disable this feature, use the no form of this command. Global configuration mpls ldp explicit-null [for <prefix-access-list>][to <peer-acce ss-list>] no mpls ldp explicit-null 22 Confidential and Proprietary Information of ZTE CORPORATION

31 Chapter 2 MPLS LDP Configuration for <prefix-access-li st> Specifies the prefix of the explicit null labels replacing implicit ones, range: 1~99 to <peer-access-list> Specifies which neighbors that the explicit null labels replaces implicit ones is advertised to, range: 1~99 By default, ZXR10 advertises directly connected networks to all neighbors by means of implicit null labels. Instructions By default, ZXR10 advertises directly connected networks to all neighbors by means of implicit null labels. The implicit null label causes the Penultimate Hop Poping (PHP) router to make PHP. Sometimes, however, it is prohibited for the PHP router to make such action so that the explicit null label is used in the outgoing label forwarding packet. The mpls ldp explicit-null command enables the router to advertise explicit null labels to the neighbors permitted by<pe er-access-list> and the directly connected networks permitted by <prefix-access-list>. If the parameter <prefix-access-list> is not specified in the command, explicit null labels will be advertised to all the directly connected networks; if the parameter <peer-access-list> is not specified in the command, explicit null labels will be advertised to all neighbors. This command takes effect only to the label advertisement messages after the configuration. If labels have been advertised before the policy is configured, and the matched networks and neighbors will not change unless the session is interrupted and reestablished. Therefore, it is not recommended to configure this command when the system is running to avoid inconsistency. 1. This example describes how to make LDP advertise all direct routes by explicit null labels to all neighbors. ZXR10(config)#mpls ldp explicit-nul 2. This example describes how to advertise explicit null labels to the directly connected network , and advertise implicit null labels to other directly connected networks. ZXR10(config)#mpls ldp explicit-null for 10 ZXR10(config)#ip access-list standard 10 ZXR10(config-std-nacl)#permit ZXR10(config-std-nacl)#deny any ZXR10(config-ext-nacl)# mpls ldp graceful-restart Use this command to enable the router to support LDP Graceful restart function. Global configuration mpls ldp graceful-restart [timer {max-recovery <interval> neighbor-liveness <interval>}] Confidential and Proprietary Information of ZTE CORPORATION 23