Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 594)

564 Multi-Service IronWare Switching Configuration Guide
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VSRP 2
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VSRP is switch redundancy, VSRP 2 is link redundancy.
When VSRP backup changes an include port from blocking state to forwarding state, to make the
aware session changes, VSRP backup will send advertisements on the forwarding include ports
every 3*hello time.
VSRP aware switches are able to change the src port of aware session and flush MACs.
For VSRP non-aware switches (other vendors), the non-aware switch will flush MACs because the
link connecting VSRP master is failed.
VSRP backup will toggle the interface when it sets an include port to forwarding state by VSRP 2.
VSRP 2 doesn’t change the master/backup state, only changes the port state.
The change of Master/backup state (VSRP failover) still follows the rules of current priority of VSRP.
VSRP 2 supports:
• hold-down time
• track port
• preempt-mode
• restart port
• topology groups
• VLAN groups.
• VPLS VLAN by topology group.
• Layer 3 VSRP with a condition: non-include link in between two VSRP routers is a must.
Configuration considerations:
• If multiple VSRP instances on multiple VLAN are configured the on one side of link pair, the
same VSRP instances of same VLANs must configure on another side of link pair.