Cisco Getting TTL expired in transit. Traffic bouncing from one router to another back and forth

Posted on 2007-10-08
Last Modified: 2008-01-09
Setting up a new network while trying to keep the old one going in unison. This is a little difficult to describe...
Traffic from server should go out router to router then to router and on to server

Doing a "tracert" from a server on the 172.16.101.x subnet which is in another state (Ohio) and below are the results I get...

Tracing route to []
over a maximum of 30 hops:

  1     1 ms     1 ms     1 ms  out of state []
  2    59 ms    59 ms    59 ms <My router
  3    60 ms    60 ms    60 ms < router
  4   118 ms   118 ms   119 ms
  5   119 ms   119 ms   119 ms
  6   177 ms   177 ms   177 ms

The tracert about it just bounces between router and or and
Here is the config of or

interface FastEthernet0/0
 description Internal LAN
 ip address secondary
 ip address secondary
 ip address
 ip nat inside
 ip route-cache flow
 ip policy route-map www
 speed auto
interface Serial0/1
 description T1 to Milford
 ip address
 ip route-cache flow
 no ip mroute-cache
 service-module t1 timeslots 1-24
interface BVI1
 ip address
 ip nat outside
 ip route-cache flow
ip nat inside source list 1 interface BVI1 overload
no ip http server
ip flow-export source FastEthernet0/0
ip flow-export version 5
ip flow-export destination 9996
ip classless
ip route Serial0/1
ip route
ip route
ip route
ip route
ip route
ip route
ip route
ip route
access-list 1 permit
access-list 120 deny   tcp any eq www
access-list 120 deny   tcp any eq ftp
access-list 120 deny   tcp any eq www
access-list 120 deny   tcp any eq www
access-list 120 permit tcp any any eq www
access-list 130 permit ip any any
route-map www permit 10
 match ip address 120
 set ip next-hop
route-map www permit 20
 match ip address 130
 set ip next-hop
snmp-server ifindex persist
bridge 1 protocol ieee
bridge 1 route ip

I'm guessing I need some sort of IP route to get it to hop over to

I hoping I explained the network layout well enough to troubleshoot
Question by:andersenks
    LVL 6

    Accepted Solution

    Either you have a default route of one router point to another router and vice versa, or your routing table has some problems accomplish the same thing.  It's a routing loop.  Check all your routing tables and fix as needed.  Two routers should never have each other as the default route.
    LVL 50

    Expert Comment

    by:Don Johnston
    Your default route is sending the packets back towards their source.


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