Brocade Communications Systems ICX 7250 series, Configuration Manual

Page: 427 / 483

VRRPv2
• VRRPv2 overview.......................................................................................................................................................................................... 427
• Enabling an owner VRRP device............................................................................................................................................................. 432
• Enabling a backup VRRP device............................................................................................................................................................. 434
• Configuring simple text authentication on VRRP interfaces.........................................................................................................435
• Configuring MD5 authentication on VRRP interfaces.................................................................................................................... 436
• Abdicating VRRP master device status................................................................................................................................................ 437
• Tracked ports and track priority with VRRP and VRRP-E.............................................................................................................439
• VRRP backup preemption..........................................................................................................................................................................440
• Accept mode for backup VRRP devices.............................................................................................................................................. 441
• Suppressing RIP route advertisements on VRRP backup devices........................................................................................... 443
• VRRP-Ev2 overview..................................................................................................................................................................................... 443
• Enabling a VRRP-E device.........................................................................................................................................................................444
• VRRP-E load-balancing using short-path forwarding....................................................................................................................445
• VRRP-E slow start timer............................................................................................................................................................................. 448
• Configuration example: ISSU upgrade using VRRP-E...................................................................................................................449
• Displaying VRRPv2 information.............................................................................................................................................................. 450
• Clearing VRRPv2 statistics........................................................................................................................................................................ 451
VRRPv2 overview
Virtual Router Redundancy Protocol (VRRP) is an election protocol that provides redundancy to routers within a Local Area Network
(LAN).
VRRP was designed to eliminate a single point of failure in a static default-route environment by dynamically assigning virtual IP routers
to participating hosts. A virtual router is a collection of physical routers whose interfaces must belong to the same IP subnet. A virtual
router ID (VRID) is assigned to each virtual router, but there is no restriction against reusing a VRID with a different address mapping on
different LANs.
NOTE
VRRP extended (VRRP-E) is an extended version of the VRRP protocol. Brocade developed VRRP-E as a proprietary protocol
to address some limitations in standards-based VRRP.
Before examining more details about how VRRP works, it is useful to see why VRRP was developed to solve the issue of a single point
of failure.
Brocade FastIron Layer 3 Routing Configuration Guide
53-1003903-04 427