VLAN Workshop. Presenter: Paul Eriksson. VLAN Workshop 2009 RoamingNet Sweden ( 1
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1 VLAN Workshop. Presenter: Paul Eriksson VLAN Workshop 2009 RoamingNet Sweden ( 1
2 About this presentation A seed from the forum by Randy (Graham)?: This Workshop could last for hours..., but there is only 45 min. VLAN Workshop 2009 RoamingNet Sweden ( 2
3 RoamingNet Sweden. About the company Helps organizations to increase the ROI in networking. Designing and deployment of wired and wireless networks. Network analysis and problem solving. Project managing. Worldwide support for different clients in different countries. Cooperates with Roamingwire Inc. VLAN Workshop 2009 RoamingNet Sweden ( 3
4 About me Have a technical degree as a Electric Engineer Been in networking since Senior networking consultant Certified MikroTik network consultant. (MTCZ0016). Certified MikroTik Trainer. (TR0027). VLAN Workshop 2009 RoamingNet Sweden ( 4
5 Topics Why VLANs.? Brief Ethernet fundamentals. Brief VLAN fundamentals Switch configurations. How VLANs are built in MikroTik RouterOS. VLAN Workshop 2009 RoamingNet Sweden ( 5
6 Topics How VLANs are built in a wireless environment. Demo system. Summary. Questions. VLAN Workshop 2009 RoamingNet Sweden ( 6
7 Why VLANs Segment traffic, Tripple Play Limiting broadcast domains Provide unique traffic shaping opportunities (firewall, QoS, etc.) Secure the network Provide remote maintenance without interfering with the running network. VLAN Workshop 2009 RoamingNet Sweden ( 7
8 Why VLANs Providing a single HotSpot model VLAN Workshop 2009 RoamingNet Sweden ( 8
9 Ethernet fundamentals The two types of Ethernet frames used in networking are similar. The DIX V2.0 frame, frequently referred to as the Ethernet II frame, and the IEEE frame. Both providing OSI level 3 with the needed data field. This field is also sometimes referred to as the MTU size of the packet. VLAN Workshop 2009 RoamingNet Sweden ( 9
10 VLAN fundamentals VLAN Workshop 2009 RoamingNet Sweden ( 10
11 VLAN fundamentals 802.1Q working group provided a VLAN standard that inserts a four byte tag into a standard Ethernet frame. Since 802.1Q arrived more then 20 years after the invention of Ethernet, there are plenty of VLAN unaware devices. There still are lots of NICs that do not support the 4 byte extra field. These devices are not suitable for VLAN tagging because the MTU (layer 3 packet ) size needs to be limited. VLAN Workshop 2009 RoamingNet Sweden ( 11
12 Switch configurations There are two different types of switch ports. Edge ports: (Untagged, Cisco: Access Port) A switch port is configured to be part of a VLAN without sending the 4 byte tag. Used with VLAN unaware devices i.e client computer, printer. Core port: (Tagged, Cisco: Trunk Port) A switch port is configured to send out the 4 byte tag. Used with VLAN aware devices i.e switches, routers and servers. VLAN Workshop 2009 RoamingNet Sweden ( 12
13 Switch configurations Core switches interconnect with other switches. Edge switches connects to the core and to client computers, printers and other non VLAN aware devices. VLAN Workshop 2009 RoamingNet Sweden ( 13
14 How VLANs are built in RouterOS Commands: /interface bridge add name=br2 /interface bridge port add bridge=br2 interface=ether2 /interface bridge port add bridge=br2 interface=ether3 /interface vlan add name=br2 vl2 interface=br2 vlan id=2 disabled=no But now we cannot use untagged interfaces in the VLAN VLAN Workshop 2009 RoamingNet Sweden ( 14
15 How VLANs are built in a wireless environment. Create a WDS interface on both ends. Wlan2 Wlan1 Wlan1 Wlan2 Add the WDS interface into the bridge. Ether1 Ether1 VLAN Workshop 2009 RoamingNet Sweden ( 15
16 How VLANs are built in a wireless environment. Commands: /interface wireless wds add name=wds mt2 master interface=wlan1 wdsaddress=01:02:03:04:05:06 disabled=no /interface bridge port add bridge=br2 interface=wds rt rnet 02 VLAN Workshop 2009 RoamingNet Sweden ( 16
17 STP and RSTP The problems with multiple bridge and STP/RSTP seem to caused of un mature linux kernel 2.6 software. The configuration works well, but the RSTP PVST (PVST=Per VLAN Spanning Tree), meaning Per Bridge Spanning Tree in ROS function would be great. Support for MST 802.1s Multiple Spanning Tree are needed. VLAN Workshop 2009 RoamingNet Sweden ( 17
18 Demo network The network are built with: 2 RouterBoard 532A 1 Cisco Catalyst 2950 (SW RNET 01) 1 HP Procurve 2512 (SW RNET 02) There is one main switch network (SW SW GE) and tree redundant networks (SW SW FE), (RT RT Cable) and (RT RT WDS) Test traffic from LAP RNET 01 to LAP RNET 02 VLAN Workshop 2009 RoamingNet Sweden ( 18
19 Demo network VLAN Workshop 2009 RoamingNet Sweden ( 19
20 VLAN Workshop 2009 RoamingNet Sweden ( 20
21 VLAN Workshop 2009 RoamingNet Sweden ( 21
22 SW SW GE cable disconnected VLAN Workshop 2009 RoamingNet Sweden ( 22
23 SW SW FE disconnected VLAN Workshop 2009 RoamingNet Sweden ( 23
24 RT RT Cable disconnected VLAN Workshop 2009 RoamingNet Sweden ( 24
25 Configuration of RT RNET 01 #Script for configuring the Mikrotik to have one single bridge and create the VLAN ontop of that bridge. /sys id set name=rt RNET 01 #Set up wireless /int wire set wlan1 mode ap country="czech republic" band=5ghz hide yes wds mode static disabled no /int wire wds add master wlan1 name=wds rt rnet 02 wds address=00:0c:42:05:aa:b5 /int wire acc add auth yes forw yes int wlan1 mac=00:0c:42:05:aa:b5 #Adding the bridges /int br add name br2 prot rstp pri 0xffff #Adding interfaces to the bridges /int br po add bridge br2 int ether2 path /int br po add bridge br2 int ether3 path /int br po add bridge br2 int wds rt rnet 02 path #Adding the VLAN interfaces /int vlan add name br2 vl2 int br2 vlan 2 dis no /int vlan add name br2 vl5 int br2 vlan 5 dis no /int vlan add name br2 vl10 int br2 vlan 10 dis no #Adding an mgmt IP /ip addr add add /24 int br2 vl2 #Setup SNMP /snmp set contact=noc@roamingnet.com enabled=yes location="prag MuM 2009" VLAN Workshop 2009 RoamingNet Sweden ( 25
26 Configuration of RT RNET 02 #Script for configuring the Mikrotik to have one single bridge and create the VLAN ontop of that bridge. /sys id set name=rt RNET 02 #Set up wireless /int wire set wlan1 mode ap country="czech republic" band=5ghz hide yes wds mode static disabled no /int wire wds add master wlan1 name=wds rt rnet 01 wds address=00:0c:42:05:aa:b0 disabled no /int wire acc add auth yes forw yes int wlan1 mac=00:0c:42:05:aa:b0 #Adding the bridges /int br add name br2 prot rstp pri 0xffff #Adding interfaces to the bridges /int br po add bridge br2 int ether2 path /int br po add bridge br2 int ether3 path /int br po add bridge br2 int wds rt rnet 01 path #Adding the VLAN interfaces /int vlan add name br2 vl2 int br2 vlan 2 dis no /int vlan add name br2 vl5 int br2 vlan 5 dis no /int vlan add name br2 vl10 int br2 vlan 10 dis no #Adding an mgmt IP /ip addr add add /24 int br2 vl2 #Setup SNMP /snmp set contact=noc@roamingnet.com enabled=yes location="prag MuM 2009" VLAN Workshop 2009 RoamingNet Sweden ( 26
27 Configuration of SW RNET 01 SW RNET 01#sho conf Using 2181 out of bytes version 12.1 no service pad service timestamps debug uptime service timestamps log uptime no service password encryption hostname SW RNET 01 enable secret 5 xxxxxxxxxxxxxxxxxxxxxxxxxxx ip subnet zero ip ssh time out 120 ip ssh authentication retries 3 vtp mode transparent spanning tree mode mst no spanning tree optimize bpdu transmission spanning tree extend system id vlan 2 name mgmt vlan 5 name ISP 1 vlan 10 name ISP 2 vlan 97 interface FastEthernet0/1 switchport trunk allowed vlan 1,2,5,10 switchport mode trunk spanning tree cost interface FastEthernet0/2 switchport trunk allowed vlan 2,5,10 switchport mode trunk spanning tree cost interface FastEthernet0/3 interface FastEthernet0/4 interface FastEthernet0/5 interface FastEthernet0/6 interface FastEthernet0/7 interface FastEthernet0/8 interface FastEthernet0/9 interface FastEthernet0/10 interface FastEthernet0/11 interface FastEthernet0/12 interface FastEthernet0/13 interface FastEthernet0/14 interface FastEthernet0/15 interface FastEthernet0/16 interface FastEthernet0/17 interface FastEthernet0/18 interface FastEthernet0/19 interface FastEthernet0/20 interface FastEthernet0/21 interface FastEthernet0/22 interface FastEthernet0/23 interface FastEthernet0/24 interface GigabitEthernet0/1 switchport trunk allowed vlan 2,5,10 switchport mode trunk spanning tree cost 1000 interface GigabitEthernet0/2 switchport trunk allowed vlan 1,2,5,10 switchport mode trunk interface Vlan1 no ip address no ip route cache shutdown interface Vlan2 ip address no ip route cache interface Vlan5 no ip address no ip route cache shutdown interface Vlan10 no ip address no ip route cache shutdown ip http server snmp server community public RO snmp server location Prag MuM 2009 snmp server contact noc@roamingnet.com line con 0 line vty 0 4 password RoamingNet login line vty 5 15 password RoamingNet login end VLAN Workshop 2009 RoamingNet Sweden ( 27
28 Configuration of SW RNET 02 Startup configuration: ; J4812A Configuration Editor; Created on release #F hostname "SW RNET 02" snmp server contact "noc@roamingnet.com" snmp server location "Prag MuM 2009" max vlans 16 cdp run snmp server community "public" Unrestricted vlan 1 name "DEFAULT_VLAN" forbid 1 2,13 untagged 5 12,14 no ip address no untagged 1 4,13 exit vlan 2 name "mgmt" ip address tagged 1 2,5 6,12 13 exit vlan 5 name "ISP 1" untagged 3 4 tagged 1 2,5 6,12 13 exit vlan 10 name "ISP 2" tagged 1 2,5 6,12 13 exit management vlan 2 no aaa port access authenticator active spanning tree spanning tree priority 5 spanning tree 13 path cost 1000 spanning tree 1 4 path cost password manager password operator exit VLAN Workshop 2009 RoamingNet Sweden ( 28
29 Summary VLANs segments the broadcast domain. VLANs helps you secure the network. For VLAN in wireless networks, create WDS connections first, then layer on the VLAN Spanning Tree can only be used on bridges with physical and WDS interfaces. Support for MST 802.1s (Multiple Spanning Tree) is a need if different pathcosts on physical and VLAN interfaces shall be used. VLAN Workshop 2009 RoamingNet Sweden ( 29
30 Thank You Paul Eriksson Mobile: Fax: CV: VLAN Workshop 2009 RoamingNet Sweden ( 30
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