Allied Telesis AT-9800 Series Jak skonfigurować
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AlliedWare
OS
Configure VRRP (Virtual Router Redundancy
How To |
Protocol)
Introduction
VRRP is a popular protocol for providing device redundancy, for connecting redundant WAN
gateway routers or server access switches. It allows a backup router or switch to
automatically take over if the primary (master) router or switch fails.
This How To Note describes one possible basic VRRP configuration.
VRRP works by grouping the redundant routers together into a single virtual router. That
virtual router entity has an IP address of its own. Instead of sending traffic to an individual
router, PCs etc send traffic to the virtual router address (for example, by using the virtual
router address as their gateway address). The master router processes traffic that is
addressed to the virtual router address and forwards it appropriately.
The master router also sends out regular advertisements to the backup router. If the master
router goes down, the backup router stops receiving these advertisements. In that case, the
backup router takes over as the master router and starts processing traffic. When the
original master router comes back up, it takes over as the master router again.
For more information about VRRP, see the Software Reference for your router or switch.
Which products does this note apply to?
This configuration applies to the following Allied Telesis switches, running all supported
AlliedWare software versions:
AT-8600, AT-8700XL, AT-8800, Rapier, Rapier w, and Rapier i series
AT-8948, AT-9900, AT-9900s, and x900 series
SwitchBlade 4000 and AT-9800 series
VRRP is also available on AR400 and AR700 series routers, but this solution uses STP, which
is not available on the routers.
C613-16127-00 REV A
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