From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Fri Dec 14 2007 - 09:24:44 ART
EIGRP timers are interesting. They can be different accross neighbor. Each
interface will have its own timers and this will be used by the "neighbor"
to decide when to declare this router as Dead.
EIGRP timers don't matter. What matters are:
K Values
AS number
Authentication.
Joseph.
On Dec 14, 2007 11:48 AM, vignesh sethuraman <sethuvignesh@yahoo.co.in>
wrote:
> Hello,
>
> I have connected 2 routers R1 and R2 using 2 serial links. I changed the
> default value of hello timers and hold timers in one of the interface only
> at R1 router. I thought neighborship will be down due to timers mismatch,
> but still it is up in both the interfaces.
>
> R1;
> interface Serial1/0
> ip address 155.1.0.5 255.255.255.0
> ip hello-interval eigrp 100 3
> ip hold-time eigrp 100 9
> encapsulation frame-relay
> frame-relay map ip 155.1.0.4 405 broadcast
> no frame-relay inverse-arp
> end
> interface Serial1/2
> ip address 155.1.45.5 255.255.255.0
> router eigrp 100
> network 155.1.0.5 0.0.0.0
> network 155.1.45.5 0.0.0.0
> network 155.2.0.5 0.0.0.0
> no auto-summary
>
>
> R2:
> interface Serial1/0
> ip address 155.1.0.4 255.255.255.0
> encapsulation frame-relay
> frame-relay map ip 155.1.0.5 504 broadcast
> no frame-relay inverse-arp
> end
> interface Serial1/2
> ip address 155.1.45.4 255.255.255.0
>
> router eigrp 100
> network 155.1.0.4 0.0.0.0
> network 155.1.45.4 0.0.0.0
> network 155.2.0.4 0.0.0.0
> no auto-summary
>
> R2#sh ip eigrp neighbors
> IP-EIGRP neighbors for process 100
> H Address Interface Hold Uptime SRTT RTO Q
> Seq
> (sec) (ms) Cnt
> Num
> 2 155.1.0.4 Se1/1 176 00:00:08 36 216 0
> 68
> 1 155.1.45.4 Se1/2 12 00:00:16 22 200 0
> 67
>
> R1#sh ip eigrp neighbors
> IP-EIGRP neighbors for process 100
> H Address Interface Hold Uptime SRTT RTO Q
> Seq
> (sec) (ms) Cnt
> Num
> 0 155.1.0.5 Se1/0 8 00:00:06 1 4500 2 0
> 1 155.1.45.5 Se1/2 14 00:00:04 36 1140 0
> 102
>
> Could you please explain why the neighborship is up on the mismatched
> interface.
>
> Thanks,
> Vignesh
>
>
>
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