Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 713)

Multi-Service IronWare Switching Configuration Guide 683
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MCT for VLL
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Once the vll-instance is operational and if the vll level pwredundancy is changed, the
pw-redundancy election is triggered, which can cause the vll-active state to change.
Setting the L2VPN global revertible timer
Whenever a node needs to become active for a given L2VPN instance, it sends a message to peer
MCT node and starts this timer. Once this timer expires on configured active MCT node, it will move
the L2VPN sessions to be active and the remote peer MCT node will move the sessions to be
standby state for PW operation.
Use the l2vpn-revertible-timer command to start a revertible timer whenever a given L2VPN
instance moves to different node as active node (against the configured active).
Brocade(config-mpls)# l2vpn-revertible-timer 200
Syntax: [no] l2vpn-revertible-timer
Use the parameter to specify the amount to time before the L2VPN session becomes active.
The default time is 300 seconds and can be a value from 0 throgh 65535 seconds. If the value is
configured to be 0, then reversion will happen immediately.
NOTE
Immediate reversion can cause instability.
PW redundancy auto reversion timer option
If there is a transient condition where the standby node's pw is active and active node pw comes
up, an auto-reversion timer of 60 seconds value(eg: 60) +/- 25% jitter seconds is started on the
active node. Upon the auto reversion timer expiration, the remote pw on the active node changes
the role to active and the remote pw on the standby node changes role to standby. This role change
is coordinated between the MCT active and standby nodes.
Display commands
Use the show mpls vll brief and show mpls detail commands to display PW redundancy information
for all VLLs and MCT related information.
Brocade#show mpls vll brief
* - Active VLL Peer; U - UP; D - DOWN
Vll-Peer Vll-Peer MCT
Name VC-ID End-Point (State) (State) state
---- ----- --------- -------- -------- -----
vl 1 untag e 1/4(U) 5.5.5.5(U)* 4.4.4.4(U) Active
v2 2 tag vlan 201 e 1/4(U) 4.4.4.4(U)* 5.5.5.5(U) Active
Syntax: show mpls vll brief
Brocade# show mpls vll detail
VLL VLL1, VC-ID 1, VLL-INDEX 0
End-point : untagged e 1/4
End-Point state : Up
MCT state : Active
Local VC type : tag
Local VC MTU : 4974
COS : --