Is 192.168.4.0 or 192.168.1.0 included in your EIGRP routing updates? If
yes, once the update goes through the tunnel interface the first time it
will break the tunnel. You'll notice the tunnel going up and down on one
router.
Solution: Remove the network from the routing update with
distribute-list, or ???
George
-----Original Message-----
From: Peng Zheng [mailto:pzheng830@xxxxxxxxx]
Sent: Monday, December 02, 2002 9:19 AM
To: security@xxxxxxxxxxxxxx
Subject: One side of the tunnel is down
Topology is.
10.3.1.* 192.168.4.3 192.168.1.13 10.2.1.*
---------R3-------------R5-------------R13--------
OSPF is running on 192.168.* and it works well. THen a
tunnel is configured:
logical topology with the tunnel is like
10.3.1.* 10.4.1.3 10.4.1.13 10.2.1.*
---------R3----------GRE Tunnel----------R13--------
The tunnel is configured as:
on R3:
---------------------------
interface Tunnel0
ip address 10.4.1.3 255.255.255.0
tunnel source 192.168.4.3
tunnel destination 192.168.1.13
------------------------------
On R13:
-------------------------------------
interface Tunnel0
ip address 10.4.1.13 255.255.255.0
tunnel source 192.168.1.13
tunnel destination 193.168.4.3
-------------------------------------
and eigrp is running on 10.0.0.0
On both of them
---------------------------------
router eigrp 10
network 10.0.0.0
no auto-summary
no eigrp log-neighbor-changes
--------------------------------
But when I tried show interface tunnel 0 on them:
On R3:
__________________________
r3#show inter tu 0
Tunnel0 is up, line protocol is up
...
on R13:
____________________
r13#sh int tun 0
Tunnel0 is up, line protocol is down
...
____________________________
What's the reason for this problem?
Thanks for help.
Best Wishes,
Peng Zheng
__________________________________________________
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