Sun Ethernet Fabric Operating System BFD Administration Guide

Transcription

1 Sun Ethernet Fabric Operating System BFD Administration Guide Part No: E July 2015

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3 Contents Using This Documentation... 5 BFD Overview... 9 BFD Protocol Description... 9 Default Configurations... 9 BFD Topology Example Configuring BFD Configure SEFOS1 in Topology for Testing Oracle BFD Configure SEFOS2 in Topology for Testing Oracle BFD Configure SEFOS3 in Topology for Testing Aricent BFD BFD Over Static IP Path Configuration BFD Over Static IPv6 Path Configuration BFD Over OSPF Configuration BFD Over OSPFv3 Configuration BFD Monitoring for BGP Configuration

4 4 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

5 Using This Documentation Overview Includes the description of BFD protocol and instructions to configure it Audience Users implementing BFD protocol with other protocols in the router stack Required knowledge Working knowledge of the protocol Product Documentation Library Documentation and resources for this product and related products are available at Acronyms and Abbreviations Terms Active CreateAndGo CreateAndWait Destroy NotInService NotReady BFD CC CV FRR GACH GAL LER LSP Explanation Conceptual row is available for use by the managed device. A management station wanting to create a new instance of a conceptual row and to have its status automatically set to active, making it available for use by the managed device, supplies this row status value. A management station wanting to create a new instance of conceptual row (but not making it available for use by the managed device) supplies this rowstatus value. A management station wishing to delete all of the instances associated with an existing conceptual row supplies this rowstatus value. Conceptual row exists in the agent, but is unavailable for use by the managed device. Conceptual row exists in the agent, but some more information is necessary to make it available for use by the managed device. Bidirectional Forwarding Detection Continuity check Connection verification Fast-Re-Route Generic associated channel header Generalized alert label Label edge router Label switched path 5

6 Terms LSR ME MEG MEP MIP MPLS-OAM MPLS-TP MPLS-TP LSP OID OSPF P2P PDU PW RDI SLA SPME TTL VCCV Explanation Label switch router Maintenance entity Maintenance entity group Maintenance entity group end point Maintenance entity group intermediate point MPLS operations, administration, and maintenance MPLS transport profile Unidirectional or bidirectional label switched path Object identifier Open shortest path first Point-to-point Packet data unit Pseudowire Remote defect indication Service level agreement Subpath maintenance element Time to live Virtual circuit connectivity verification CLI Command Modes This table lists the various command modes used in this document with their access and exit methods. Command Mode Access Method Prompt Exit Method User EXEC Privileged EXEC Global Configuration Initial mode for starting a session. From User EXEC mode, use the enable command. From Privileged EXEC mode, use the configure terminal command. SEFOS> SEFOS# SEFOS(config)# Use the logout command to return to the Oracle ILOM prompt. Use the disable command to return to the User EXEC mode. Use the exit or end command to exit to the Privileged EXEC mode. Interface Configuration From Global Configuration SEFOS(config- Use the exit command to 6 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

7 Command Mode Access Method Prompt Exit Method Switch Configuration BFD Session Configuration mode, use the interface-type interface-id command. From Global Configuration mode, use the switch switch-name command. From Global Configuration mode, use the bfd session session-index command. if)# SEFOS(configswitch)# SEFOS(configbfdsess)# return to Global Configuration mode, or use the end command to return to Privileged EXEC mode. Use the exit command to return to Global Configuration mode, or use the end command to return to Privileged EXEC mode. Use the exit command to return to Global Configuration mode, or use the end command to return to Privileged EXEC mode. Feedback Provide feedback about this documentation at Using This Documentation 7

8 . 8 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

9 BFD Overview BFD Protocol Description Oracle BFD implements the Bidirectional Forwarding Detection described in the RFC BFD is a detection protocol designed to provide fast forwarding-path failure detection times for media types, encapsulations, topologies, and routing protocols. BFD detects forwarding path failures at a uniform rate, rather than the variable rates for different protocol hello mechanisms. BFD makes network profiling and planning easier and reconvergence time consistent and predictable. BFD provides subsecond failure detection between two adjacent devices and can be less CPU-intensive than protocol hello messages, because some of the BFD load can be distributed to the data plane on supported modules. Oracle BFD supports path monitoring for the following protocols: Static IPv4 & IPv6 BGP OSPF MPLS Linux IP support for BFD is provided and the configurations are same as mentioned in this document. The supported protocols for BFD in Linux IP are static route, OSPF, and BGP in IPv4, and static route and BGP in IPv6. This document describes how to configure Oracle BFD running as a part of Sun Ethernet Fabric Operating System (SEFOS). BFD is configurable and managed by CLI. For more information about the command modes of CLI, see CLI Command Modes. Default Configurations The following table lists the default values assigned to several BFD parameters, during the start-up of the router. Parameter BFD Administrative System Control Status BFD Global Operational Mode BFD Global Minimum Transmit Interval BFD Global Minimum Reception Interval BFD Global Detection Time Multiplier BFD Global Slow Transmission Interval BFD Session Role BFD Session Mode Default Setting Start Asynchronous mode without echo function. 1 second 1 second 3 seconds 1 second Active CC (Continuity Check) 9

10 Parameter BFD Session Timer Negotiation BFD Session Offloading BFD Trap Notifications BFD Session Admin Status BFD Version Number BFD Session State BFD Demand Mode BFD Control Plane Independency BFD Generalized TTL Security Mechanism (GTSM) BFD Session Authentication Default Setting Enabled Disabled Session UP and DOWN notifications enabled Enabled BFD Version 1 (RFC5880) DOWN Disabled Disabled Disabled Disabled BFD Topology Example The following figure is an example of BFD configuration. The figure depicts the components used in the topology, which are described as follows: R1, R2, and R3 represent routers in which SEFOS is installed. VLAN2 and VLAN3 represent the VLAN interfaces of the SEFOS routers. Each SEFOS switch has a router ID. This table lists the IPv4 and IPv6 addresses of the interfaces and hosts provided in the figure. Router / Host Interface Slot IPv4 Address / Mask IPv6 Address / Prefix Length R1 VLAN2 0/ / fec0::2222:0:1 / 96, 2222::1/96 R2 VLAN2 0/ / fec0::2222:0:2 / 96, 2222::2/96 VLAN3 0/ / fec0::3333:0:2 / 96, 3333::2/96 R3 VLAN3 0/ / fec0::3333:0:3 / 96, 3333::3/96 10 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

11 Configuring BFD The Oracle BFD software is designed in accordance with the FSAP2 (Flexible Software Architecture for Portability) to ensure a high level of portability This chapter describes the preliminary configurations and the configurations for the topologies of Oracle BFD. You can configure the Oracle BFD feature by accessing Global Configuration mode or Interface Configuration mode. The configuration steps described in this document begin with accessing one or both of these modes. This chapter describes the configuration of the Oracle BFD features using CLI. Configuring BFD over Static IPv4 & IPv6 paths Configuring BFD over OSPF Configuring BFD over BGP Configure SEFOS1 in Topology for Testing Oracle BFD The figure in the BFD Topology Example depicts the topology setup for this configuration. Note: For the enterprise package, ports are automatically mapped to default switch. 1. Type the following commands to configure SEFOS1 in Topology for Testing Oracle BFD. SEFOS(config)# interface vlan 1 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# map switch default SEFOS(config-switch)# vlan 1 11

12 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/1 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# switchport pvid 1 SEFOS(config)# interface vlan 2 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# map switch default SEFOS(config-switch)# vlan 2 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/2 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# switchport pvid 2 2. Verify the VLAN configurations. SEFOS# show ip interface Vlan1 is up, line protocol is up 12 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

13 Internet Address is /8 Broadcast Address Vlan2 is up, line protocol is up Internet Address is /8 Broadcast Address Configure SEFOS2 in Topology for Testing Oracle BFD The figure in the BFD Topology Example depicts the topology setup for this configuration. 1. Type the following commands to configure SEFOS2 in BFD Topology Example. SEFOS(config)# interface vlan 1 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# map switch default SEFOS(config-switch)# vlan 1 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/1 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# switchport pvid 1 Configuring BFD 13

14 SEFOS(config)# interface vlan 2 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# map switch default SEFOS(config-switch)# vlan 2 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/2 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# switchport pvid 2 SEFOS(config)# interface vlan 3 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

15 SEFOS(config)# interface extreme-ethernet 0/3 SEFOS(config-if)# map switch default SEFOS(config-switch)# vlan 3 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/3 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/3 SEFOS(config-if)# switchport pvid 3 2. Verify the VLAN configurations. SEFOS# show ip interface Vlan1 is up, line protocol is up Internet Address is /8 Broadcast Address Vlan2 is up, line protocol is up Internet Address is /8 Broadcast Address Vlan3 is up, line protocol is up Internet Address is /8 Broadcast Address Configure SEFOS3 in Topology for Testing Aricent BFD The figure in the BFD Topology Example depicts the topology setup for this configuration. 1. Type the following commands to configure SEFOS3 in topology for testing Oracle BFD. Configuring BFD 15

16 SEFOS(config)# interface vlan 1 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# map switch default SEFOS(config-switch)# vlan 1 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/1 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/1 SEFOS(config-if)# switchport pvid 1 SEFOS(config)# interface vlan 3 SEFOS(config-if)# shutdown SEFOS(config-if)# ip address SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# map switch default 16 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015

17 SEFOS(config-switch)# vlan 3 SEFOS(config-switch-vlan)# ports extreme-ethernet 0/2 SEFOS(config-switch-vlan)# end SEFOS(config)# interface extreme-ethernet 0/2 SEFOS(config-if)# switchport pvid 3 2. Verify the VLAN configurations. SEFOS# show ip interface Vlan1 is up, line protocol is up Internet Address is /8 Broadcast Address Vlan3 is up, line protocol is up Internet Address is /8 Broadcast Address BFD Over Static IP Path Configuration This feature enables you to monitor IP neighbor reachability by using BFD. You can configure the neighbor statically. IP moves static routes (with next hop as neighbor) to pending state when BFD notifies that the neighbor is not reachable. BFD Over Static IPv6 Path Configuration This feature enables you to monitor IPv6 neighbor reachability using BFD. You can configure the neighbor statically. IPv6 moves static routes (with next hop as neighbor) to pending state when BFD notifies the neighbor is not reachable. Refer to the Sun Ethernet Fabric Operating System IPv6 Administration Guide for static configurations. Configuring BFD 17

18 BFD Over OSPF Configuration This feature enables OSPF to detect its neighbor unreachable faster. BFD reports neighbor unreachable to OSPF as soon as it detects BFD packet failure. This speeds up convergence. BFD Over OSPFv3 Configuration This feature enables OSPFv3 to detect its IPv6 neighbor unreachable faster. BFD reports neighbor unreachable to OSPFv3 as soon as it detects BFD packet failure. This speeds up convergence. Refer to the Sun Ethernet Fabric Operating System OSPFv3 Administration Guide for detailed configuration. BFD Monitoring for BGP Configuration This feature enables BGP to detect its IPv4 and IPv6 remote neighbor unreachable faster. BFD reports neighbor unreachable to BGP as soon as it detects BFD packet failure. This speeds up convergence. Refer to the Sun Ethernet Fabric Operating System BGP administration Guide for detailed configuration. 18 Sun Ethernet Fabric Operating System BFD Administration Guide July 2015