Dell PowerConnect B-FCXs Configuration Manual page 423

FIGURE 75
A signaling process for the interaction between VSRP and MRP ensures that MRP is informed of the
topology change and achieves convergence rapidly. When a VSRP node fails, a new VSRP master is
selected. The new VSRP master finds all MRP instances impacted by the failover. Then each MRP
instance does the following:
•
•
•
The process continues until the Master MRP node secondary (blocking) interface blocks the
packet. Once the MAC address entries have been flushed, the MAC table can be rebuilt for the new
path from the host to the VSRP-linked device
FIGURE 76
There are no CLI commands used to configure this process.
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
VSRP on MRP rings that failed over
Path 1
MRP
Master
MRP
MRP
Member
MRP Member
VSRP Backup
VSRP
X
Device 1
The MRP node sends out an MRP PDU with the mac-flush flag set three times on the MRP ring.
The MRP node that receives this MRP PDU empties all the MAC entries from its interfaces that
participate on the MRP ring.
The MRP node then forwards the MRP PDU with the mac-flush flag set to the next MRP node
that is in forwarding state.
New path established
Path 1
MRP
Master
MRP
MRP
Member
MRP
MRP
VSRP Backup
Member
Member
VSRP
X
Device 1
Virtual Switch Redundancy Protocol (VSRP)
MRP
Host
Member
MRP Member
VSRP Master
(Figure 76).
MRP
Host
Member
VSRP Master
Path 2
MRP
Member
MRP MRP
Member
Member
MRP Master
MRP Member
VSRP Backup
VSRP Master
VSRP
X
Device 1
Path 2
MRP
Member
MRP MRP
Member
Member
MRP
MRP
VSRP Backup
VSRP Master
Master
Member
VSRP
X
Device 1
10
MRP
Host
MRP
Host
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