RE: EIGRP over tunnel interface

I see a potential problem.

Your static route on R1 does not match the subnet of fa0/1 on R2

Tony Schaffran
Sr. Network Consultant
CCIE #11071
CCNP, CCNA, CCDA,
NNCDS, NNCSS, CNE, MCSE

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Jay
McMickle
Sent: Tuesday, October 18, 2011 6:31 AM
To: amin
Cc: Joseph L. Brunner; <ccielab_at_groupstudy.com>
Subject: Re: EIGRP over tunnel interface

My question still stands-
Is there an alternate path other than the tunnel? The peering will drop if
it learns about the neighbor through the tunnel if it has a peering through
another path.
If you want help, the full details are needed!

Regards,
Jay McMickle- CCNP,CCSP,CCDP
Sent from my iPhone
http://mycciepursuit.wordpress.com

On Oct 17, 2011, at 8:27 AM, "amin" <amin_at_axizo.com> wrote:

> Al_Qubba#ping 10.5.5.1 repeat 1000
>
> Type escape sequence to abort.
> Sending 1000, 100-byte ICMP Echos to 10.5.5.1, timeout is 2 seconds:
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
> !!!!!!!!!!!!!!!!!!!!
> Success rate is 100 percent (1000/1000), round-trip min/avg/max =
12/12/280
> ms
>
>
>
> -----Original Message-----
> From: Joseph L. Brunner [mailto:joe_at_affirmedsystems.com]
> Sent: Monday, October 17, 2011 2:58 PM
> To: amin; ccielab_at_groupstudy.com
> Subject: RE: EIGRP over tunnel interface
>
>> the tunnel is 100% working
>
> No its not. If it was eigrp would stay up.
>
> Do this - run a continuous ping from R1 to R2, i.e.
>
> Ping 10.5.5.1 re 100000
>
>
> Does 1 ping fail?
>
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
amin
> Sent: Monday, October 17, 2011 8:49 AM
> To: ccielab_at_groupstudy.com
> Subject: EIGRP over tunnel interface
>
> Hi experts,
>
>
>
> Strange case in configuring EIGRP over gre tunnel, no neighbors on R1, R2
> see R1 as a neighbor but always give me retry time exceeded, the tunnel is
> 100% working:-
>
>
>
> R1
>
> interface Tunnel40
>
> ip address 10.5.5.1 255.255.255.0
>
> tunnel source 10.10.10.102
>
> tunnel destination 192.168.71.2
>
>
>
> ip route 192.168.71.0 255.255.255.128 10.10.10.101 h static route to reach
> the destination
>
>
>
> interface Serial0/1/0:1
>
> ip address 10.10.10.102 255.255.255.252 h Tunnel source
>
>
>
> router eigrp 100
>
> network 10.5.5.0 0.0.0.255
>
> no auto-summary
>
>
>
>
>
>
>
>
>
> R2
>
>
>
> interface Tunnel0
>
> ip address 10.5.5.2 255.255.255.0
>
> tunnel source 192.168.71.2
>
> tunnel destination 10.10.10.102
>
>
>
> ip route 10.10.10.100 255.255.255.252 192.168.71.1 h static route for the
> destination
>
>
>
> interface FastEthernet0/1
>
> ip address 192.168.71.129 255.255.255.128 h Tunnel source
>
>
>
> router eigrp 100
>
> network 10.5.5.0 0.0.0.255
>
> no auto-summary
>
>
>
> show ip eigrp neighbor
>
> H Address Interface Hold Uptime SRTT RTO Q
Seq
>
> (sec)
> (ms) Cnt Num
>
> 0 10.5.5.1 Tu0 79 00:00:39 1
> 5000 2 0
>
>
>
>
>
> Debug ip eigrp
>
> *Oct 17 12:53:41.679: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
10.5.5.1
> (Tunnel0) is down: retry limit exceeded
>
> *Oct 17 12:53:53.971: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
10.5.5.1
> (Tunnel0) is up: new adjacency
>
>
>
> Regards,
>
> Amin
>
>
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Received on Tue Oct 18 2011 - 06:57:41 ART