About VRRP
Cisco MDS 9000 Family switches are compliant with RFC 2338 standards for Virtual Router Redundancy Protocol (VRRP) features. VRRP provides a redundant alternative path to the gateway switch, which has connectivity to the NMS. VRRP has the following characteristics and advantages:
- VRRP is a restartable application.
- When a VRRP master fails, the VRRP backup takes over within three times the advertisement time.
- VRRP over Ethernet, VRRP over VSAN, and Fibre Channel functions are implemented as defined in RFC 2338 and draft-ietf-vrrp-ipv6 spec, "Virtual Router Redundancy Propocol fol IPv6"
- A virtual router is mapped to each VSAN and Ethernet interface with its unique virtual router IP, virtual router MAC, and VR ID.
- Interface Mgmt 0 supports only one VRRP group. All other interface supports up to 7 virtual router groups, including both IPv4 and v6 combined.
- VR IDs can be reused in multiple VSANs with different virtual router IP mapping.
- Up to 255 virtual router groups can be assigned in each VSAN.
- VRRP security provides three options, including no authentication, simple text authentication, and MD5 authentication.
- Supports IPv4 and IPv6.
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