Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 164)

FIGURE 23 Connecting local VCS clusters over long-distance using vLAG
Guidelines and restrictions for Distributed Ethernet Fabrics using vLAG
Note the following guidelines and restrictions for Distributed Ethernet Fabrics using vLAG .
• Only dynamic vLAG is supported.
• DCB/FCoE lossless Ethernet traffic is not supported.
• The maximum supported distance is 100 km.
Configuring a Metro VCS port
To configure a Metro VCS port, perform the following steps in privileged EXEC mode. Each long-
distance ISL port of a VCS must be connected to a long-distance ISL port on the remote VCS.
1. Verify that the default standard-distance ISL configuration is correct by using the show running-
config command.
switch# show running-config interface tengigabitethernet 51/0/1
interface TenGigabitEthernet 51/0/1
fabric isl enable
fabric trunk enable
no shutdown
2. Set the port to support Metro VCS up to 30 km by using the long-distance-isl command.
switch# interface tengigabit 51/0/1
switch(conf-if-te-51/0/1)# long-distance-isl 30000
3. Perform the same long-distance ISL configuration on the interface of the peer RBridge on the
remote sites of the Metro VCS.
4. Verify that the long-distance ISL is correctly formed by using the show fabric isl and show fabric
islports command.
switch(conf-if-te-51/0/1)# do show fabric isl
Rbridge-id: 51 #ISLs: 1
Guidelines and restrictions for Distributed Ethernet Fabrics using vLAG
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