Vrrp and vrrp-e parameters – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual
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Multi-Service IronWare Routing Configuration Guide
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VRRP and VRRP-E parameters
•
Hello packets:
•
VRRP sends Hello messages to IP Multicast address 224.0.0.18.
•
VRRP-E uses UDP to send Hello messages in IP multicast messages. The Hello packets
use the interface’s actual MAC address and IP address as the source addresses. The
destination MAC address is 00-00-00-00-00-02, and the destination IP address is
224.0.0.2 (the well-known IP multicast address for “all routers”). Both the source and
destination UDP port number is 8888. VRRP messages are encapsulated in the data
portion of the packet.
•
Track ports and track priority:
•
VRRP changes the priority of the VRID to the track priority, which typically is lower than the
VRID priority and lower than the VRID’s priorities configured on the Backups. For example,
if the VRRP interface’s priority is 100 and a tracked interface with track priority 20 goes
down, the software changes the VRRP interface’s priority to 20.
•
VRRP-E reduces the priority of a VRRP-E interface by the amount of a tracked interface’s
priority if the tracked interface’s link goes down. For example, if the VRRP-E interface’s
priority is 200 and a tracked interface with track priority 20 goes down, the software
changes the VRRP-E interface’s priority to 180. If another tracked interface goes down, the
software reduces the VRID’s priority again, by the amount of the tracked interface’s track
priority.
The most important difference is that all VRRP-E routers are Backups. There is no Owner router.
VRRP-E overcomes the limitations in standard VRRP by removing the Owner.
VRRP and VRRP-E parameters
lists the VRRP and VRRP-E parameters. Most of the parameters and default values are
the same for both protocols. Any exceptions are noted in the table.
TABLE 170
VRRP and VRRP-E parameters
Parameter
Description
Default
Refer page...
Protocol
Virtual Router Redundancy Protocol (VRRP) or
VRRP-Extended, Brocade’s enhanced implementation
of VRRP
Disabled
NOTE: Only one of the
protocols can
be enabled at a
time.
VRRP or VRRP-E
router
The Brocade device’s active participation as a VRRP
or VRRP-E router. Enabling the protocol does not
activate the Brocade device for VRRP or VRRP-E. You
must activate the Brocade device as a VRRP or
VRRP-E router after you configure the VRRP or VRRP-E
parameters.
Inactive
Virtual Router ID
(VRID)
The ID of the virtual router you are creating by
configuring multiple routers to back up an IP
interface. You must configure the same VRID on each
router that you want to use to back up the address.
No default.
None