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Virtual MAC Redundancy Protocol (VMRP)

Virtual MAC Redundancy Protocol (VMRP). zhaisuping@huawei.com yanw@huawei.com Bsultan@huawei.com IEEE802.17 WG Hyatt Regency Dallas, TX USA Nov 12~17, 2006. VMRP overview . To reuse the VRRP (Virtual Router Redundancy Protocol) mechanism in the interconnection RPR network.

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Virtual MAC Redundancy Protocol (VMRP)

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  1. Virtual MAC Redundancy Protocol (VMRP) zhaisuping@huawei.com yanw@huawei.com Bsultan@huawei.com IEEE802.17 WG Hyatt Regency Dallas, TX USA Nov 12~17, 2006

  2. VMRP overview • To reuse the VRRP (Virtual Router Redundancy Protocol) mechanism in the interconnection RPR network. • The right figures shows the function views of the interconnection RPR bridges and the relationship between the RPR ports and ring connections. • When use VMRP, as show in the top right figure, bridge C1 and C2 shares the two VMACs, VMAC1 for the left RPR ring, VMAC2 for the right RPR ring.

  3. VMRP brief overview • We also can classify the traffic into different groups same with DIP. • For different traffic groups, provisioning or dynamically negotiating the master bridge to forward the traffic. • In the stable state, the master and backup bridge share the same SDB per ring through the synchronization mechanism. • In case of the master bridge fails, there is no need to update the other RPR bridges SDB, because the master and backup bridges share the same virtual MAC address. • There are two mechanisms to detect if the master bridge fails. One is if the backup bridge can’t receive the messages from master continuously for x times, then the backup bridge knows that the master bridge has failed. The other is the backup bridge can monitor the TP database periodically, as a result has the knowledge of the master bridge’s state information.

  4. About VMRP • Any discussion?

  5. Thank you!

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