11-28-2007 05:10 AM - edited 03-03-2019 07:42 PM
A few times a day we can not reach one subnet across one of our WAN links. the traceroutes die at our WAN router before it hits our core router. I cleared the arp table on the 2651XM WAn router and was able to ping. I am not sure if it was by chance that it happened at the same time I cleared the arp table or not. Any ideas what might be causing it? If I log into the router I can ping the subnet but from the the sites it dies at the outside interface of our 2651xm
12-05-2007 08:20 AM
Could you paste running config on your 2651?
12-14-2007 05:45 AM
version 12.3
service timestamps debug datetime
service timestamps log datetime
service password-encryption
boot-start-marker
boot system flash c2600-is-mz.122-8.t10.bin
boot system flash:c2600-is-mz.123-22.bin
boot-end-marker
!
no logging console
!
clock timezone CST -6
clock summer-time CDT recurring
no network-clock-participate slot 1
no network-clock-participate wic 0
ip subnet-zero
ip flow-cache timeout active 1
ip cef
policy-map WFQ
class class-default
fair-queue
interface FastEthernet0/0
no ip address
no ip mroute-cache
shutdown
speed auto
half-duplex
!
interface FastEthernet0/1
ip address 192.234.179.127 255.255.255.0
no ip redirects
ip route-cache flow
no ip mroute-cache
speed 100
full-duplex
arp timeout 1800
!
interface ATM1/0
no ip address
no ip mroute-cache
no atm ilmi-keepalive
ima-group 3
no scrambling-payload
cablelength short 399
!
interface ATM1/1
no ip address
no ip mroute-cache
no atm ilmi-keepalive
ima-group 3
no scrambling-payload
cablelength short 399
!
interface ATM1/2
no ip address
no ip mroute-cache
shutdown
no atm ilmi-keepalive
no scrambling-payload
!
interface ATM1/3
no ip address
no ip mroute-cache
shutdown
no atm ilmi-keepalive
no scrambling-payload
!
interface ATM1/IMA3
ip address 192.168.1.5 255.255.255.252
no ip route-cache cef
no ip route-cache
atm uni-version 3.1
no atm auto-configuration
no atm ilmi-keepalive
no atm address-registration
no atm ilmi-enable
ima differential-delay-maximum 50
service-policy output WFQ
pvc 0/101
protocol ip 192.168.1.6 broadcast
vbr-nrt 2700 2700 1
oam-pvc manage
encapsulation aal5snap
!
!
ip default-gateway 192.234.179.110
no ip http server
ip flow-export source FastEthernet0/1
ip flow-export version 5
ip flow-export destination 192.234.179.173 9996
ip classless
ip route 0.0.0.0 0.0.0.0 192.234.179.121
ip route 172.21.0.0 255.255.255.128 192.168.1.6
ip route 192.168.13.0 255.255.255.0 192.168.1.6
ip route 192.168.16.0 255.255.255.0 192.168.1.6
ip route 192.168.17.0 255.255.255.0 192.168.1.6
ip route 192.168.18.0 255.255.255.0 192.168.1.6
ip route 192.168.22.0 255.255.255.0 192.168.1.6
ip route 192.168.26.0 255.255.255.0 192.168.1.6
ip route 192.168.41.0 255.255.255.0 192.168.1.6
ip route 192.168.42.0 255.255.255.0 192.168.1.6
ip route 192.168.43.0 255.255.255.0 192.168.1.6
ip route 192.168.44.0 255.255.255.0 192.168.1.6
ip route 192.168.68.0 255.255.255.0 192.168.1.6
ip route 192.234.189.0 255.255.255.0 192.168.1.6
ip route 192.234.190.0 255.255.255.0 192.168.1.6
ip route 192.234.192.0 255.255.255.0 192.168.1.6
ip route 192.234.193.0 255.255.255.0 192.168.1.6
ip route 192.234.194.0 255.255.255.0 192.168.1.6
ip route 192.234.195.0 255.255.255.0 192.168.1.6
ip route 192.234.201.0 255.255.255.0 192.168.1.6
ip route 192.234.203.0 255.255.255.0 192.168.1.6
ip route 192.234.204.0 255.255.255.0 192.168.1.6
ip route 192.234.205.0 255.255.255.0 192.168.1.6
ip route 192.234.209.0 255.255.255.0 192.168.1.6
ip route 192.234.210.0 255.255.255.0 192.168.1.6
ip route 192.234.216.0 255.255.255.0 192.168.1.6
12-14-2007 10:03 AM
have you taken a look at your atm interface? any errors? do a 'show log' on the router..anything stands out as the potential cause of the problem?
12-17-2007 05:30 AM
I disabled CEF on friday and so far everything seems to be working. Why would CEF be causing this issue if that is really the cause?
12-17-2007 09:09 AM
sure, it seems a kind of transmition issue. Check your links out and provide an output of your log.
rgds
12-17-2007 09:39 AM
what logs do you need?
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