From: Bob Sinclair (bsin@cox.net)
Date: Sun Oct 31 2004 - 12:13:33 GMT-3
Joe,
Whether higher or lower preference is preferred depends on the host.
Normally, the router is acting as a gateway and the preference is sent to PC
hosts. PC hosts prefer the gateway with the higher preference. This is
what is reflected in the router syntax:
R2(config-if)#ip irdp preference ?
<-2147483648 - 2147483647> preference for this address (higher values
preferred)
BUT, we often turn our cisco routers into hosts in lab scenarios by turning
off IP routing. The cisco router, as a host, will choose the gateway with
the lowest configured preference number. When checking this on equipment,
be sure to be patient. The irdp hello and hold times are quite long.
HTH,
Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net
----- Original Message -----
From: "Joe Rothstein" <ziutek@mac.com>
To: "Group study" <ccielab@groupstudy.com>
Sent: Saturday, October 30, 2004 8:01 AM
Subject: irdp preference
> Could someone give me a definitive answer as to the preference under IRDP?
>
> Looking at the documentation it is unclear as to whether a higher
> preference or lower preference makes a router the preferred gateway.
>
> Any comments and clarification would be appreciated.
>
> Joe
>
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