Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 603)

Enabling accept mode in VRRP non-Owner Master router
To configure a non-Owner Master router to respond to ping, traceroute, and Telnet packets destined
for the virtual IPv4 or IPv6 address of a VRRP cluster, use the accept-mode command in the VRRP
configuration mode.
The following example shows the configuration of accept mode on an IPv6
Backup router.
Brocade(config)# interface ve 3
Brocade(config-vif-3)# ipv6 vrrp vrid 2
Brocade(config-vif-3-vrid-2)# backup
Brocade(config-vif-3-vrid-2)# advertise backup
Brocade(config-vif-3-vrid-2)# ipv6-address 2001:DB8::1
Brocade(config-vif-3-vrid-2)# accept-mode
Brocade(config-vif-3-vrid-2)# activate
Configuration considerations for IPv6 VRRP v3 and IPv6 VRRP-E v3
support on Brocade devices
Consider the following when enabling IPv6 VRRP v3 mode and IPv6 VRRP-E v3 mode on Brocade
devices:
• You can configure only one protocol (Layer 3 VSRP, VRRP, or VRRP-E) on a router at a single time.
However, VRRP or VRRP-E can be configured with IPv4 and IPv6 concurrently on a router.
• Scale timer configuration does not affect timer values, nor does it scale timer values for virtual routers
configured with sub-second time values for IPv6 VRRP and IPv4 VRRP v3 modes.
• Abdication of a VRRP Owner router in an IPv6 environment is not supported. Abdication of an Owner
router is a Brocade-specific enhancement to VRRP. Abdication of an Owner router is possible by
changing the Owner’s priority, or by configuring track ports for an Owner router.
‐ For IPv6 VRRP v3 only, the tracking port configuration is not allowed if the router is
configured as the VRRP Owner. This conforms to RFC 5798.
‐ For the IPv6 VRRP v3 Owner router only, the priority configuration is not allowed. The
Owner router priority is always 255. This conforms to RFC 5798.
• Interoperability is not supported for a VRID when VRRP routers are configured as VRRP v2 or v3.
• Brocade does not recommend to re-use the same VRID across IPv6 VRRP or IPv4 VRRP or if they
are in the same broadcast domain.
• There is no specified restriction for configuring VRRP or VRRP-E instances if they are within the
maximum VRID range.
Basic VRRP-E parameter configuration
The following sections describe the configuration of the parameters specific to IPv4 and IPv6 VRRP-E.
Configuration rules for VRRP-E
Consider the following rules when configuring VRRP-E:
• The interfaces of all routers in a VRID must be in the same IP subnet.
• The IP address associated with the VRID cannot be configured on any of the Layer 3 switches.
Enabling accept mode in VRRP non-Owner Master router
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 603
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