Cisco Router Crashing

M

miraportuga

n00b
Joined
Mar 25, 2009
Messages
30
Hi again, my cisco router is crashing and i simply dont know why, dont know if anything similar happened to any of you, but if it did, maybe you can help.

The case is, my ISP drops the connection every 36 hours, to change ip address, when this happens the cisco simply crashes, and reboots. I would like to avoid this...

If you need any more info just ask

Cheers

Cisco IOS Software, C180X Software (C180X-ADVIPSERVICESK9-M), Version 12.4(6)T6, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Fri 08-Dec-06 13:09 by kellythw

ROM: System Bootstrap, Version 12.3(8r)YH8, RELEASE SOFTWARE (fc2)

DonaldDuck uptime is 1 hour, 1 minute
System returned to ROM by address error at PC 0xB0D0B0C, address 0xB0D0B0C at 11:22:59 GMT Fri Oct 9 2009
System restarted at 12:23:35 GMT Fri Oct 9 2009
System image file is "flash:c180x-advipservicesk9-mz.124-6.T6.bin"


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Cisco 1801 (MPC8500) processor (revision 0x400) with 111616K/19456K bytes of memory.
Processor board ID FHK110817C3, with hardware revision 0000

9 FastEthernet interfaces
1 ISDN Basic Rate interface
1 ATM interface
31488K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102
Click to expand...

My running-config is way too big so ill just cut some things out of it.

version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log uptime
service password-encryption
!
hostname DonaldDuck
!
boot-start-marker
boot-end-marker
!
security authentication failure rate 2 log
security passwords min-length 6
logging buffered 65535 debugging
no logging console
enable secret 5
enable password 7
!
no aaa new-model
!
resource policy
!
memory-size iomem 15
clock timezone GMT 1
no ip source-route
no ip gratuitous-arps
!
!
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address ...
!
ip telnet hidden addresses
no ip bootp server
no ip domain lookup
ip domain name xxxxxxx
ip name-server xxxxxxxxx
ip name-server xxxxxxxx
ip ssh time-out 30
ip ssh version 2
ip inspect log drop-pkt
ip inspect name INTERNET-OUT tcp alert on audit-trail on
ip inspect name INTERNET-OUT udp alert on audit-trail on
ip inspect name INTERNET-OUT icmp alert on audit-trail on
ip inspect name INTERNET-OUT esmtp alert on audit-trail on
ip inspect name INTERNET-OUT http alert on audit-trail on
ip inspect name INTERNET-OUT https alert on audit-trail on
ip inspect name INTERNET-IN tcp alert on audit-trail on
ip inspect name INTERNET-IN udp alert on audit-trail on
ip inspect name INTERNET-IN imaps alert on audit-trail on
ip inspect name INTERNET-IN pop3s alert on audit-trail on
ip inspect name INTERNET-IN https alert on audit-trail on
ip inspect name INTERNET-IN esmtp alert on audit-trail on
ip inspect name Foneras appfw ads
ip ips sdf location flash:128MB.sdf
ip ips sdf location flash:attack-drop.sdf
ip ips deny-action ips-interface
ip ips name IPS
ip urlfilter cache 100
ip ddns update method no-ip ...
!
login block-for 300 attempts 3 within 60
login delay 3
login quiet-mode access-class 90
login on-failure log every 3
login on-success log every 3
vpdn enable
!
vpdn-group pptp
! Default PPTP VPDN group
description HomeVPN
accept-dialin
protocol pptp
virtual-template 4
!
!
appfw policy-name ads
application http
strict-http action reset alarm
port-misuse p2p action reset alarm
port-misuse tunneling action reset alarm
!
!
crypto pki trustpoint TP-self-signed-3872978387 ....
!
no spanning-tree vlan 1
no spanning-tree vlan 23
no spanning-tree vlan 24
no spanning-tree vlan 29
no spanning-tree vlan 100
no spanning-tree vlan 666
username xxxxxxxx access-class 90 privilege 15 secret 5 xxxxxxxxxxxxxxxxx
username xxxxxxxx access-class 70 password 7 xxxxxxxxxxxx
secure boot-image
secure boot-config ...
!
interface ATM0
description ATM for DSL2+
no ip address
no atm ilmi-keepalive
dsl operating-mode adsl2+
!
interface ATM0.1 point-to-point
no snmp trap link-status
pvc 0/35
pppoe-client dial-pool-number 1
!
interface Vlan ....
!
interface Dialer0
mtu 1456
bandwidth 1024
ip ddns update hostname xxxxxxxxxxxxx
ip ddns update no-ip
ip address negotiated
ip access-group 111 in
no ip redirects
no ip unreachables
ip nbar protocol-discovery
ip nat outside
ip inspect INTERNET-IN in
ip inspect INTERNET-OUT out
ip ips IPS in
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1412
no ip mroute-cache
dialer pool 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username xxxxxxxxxxxx password 7 xxxxxxxxxx
max-reserved-bandwidth 100
service-policy output QoS
!
ip local pool pptp 192.168.68.20
ip route 0.0.0.0 0.0.0.0 Dialer0
!
Click to expand...

I believe thats all that matters to the case

Cheers
 
Last edited:
the model of Cisco router, as well as the version of software you are running, would both be helpful information.
 
You might also want to post your "show run" info.
You can also post on the Cisco forums for help. Those guys a really good, free help (same goes for [H], but you will probably get more help from the Cisco forums).
 
Your IOS is rather old; first thing I'd do is try upgrading the software.

ADVANCED IP SERVICES
c180x-advipservicesk9-mz.124-24.T1.bin
Release Date: 23/Jun/2009
Size: 23114.29 KB (23669032 bytes)
Minimum Memory: DRAM:256 MB Flash:64 MB

is the latest
 
I can't believe a config would crash the router, so it's either a hardware problem or IOS bug. Start with updating IOS. 12.4.15T10 is pretty solid.
 
I would upgrade IOS if i could find one for this router, i bought this on Ebay, so i dont have any kind of access to cisco website to download the latest IOS. Second i only have 128mb ram, i bought more 128 ram, wich will arrive next week. Dont know if its possible, but if someone could get me a IOS that could run with just 128mb ram and 32mb flash i would aprecciate it.

Cheers

P.S. - Spoke too early, got a 12.4 15T8, dont know if its rock solid but ill test it
 
Last edited:
TC10284 said:
You might also want to post your "show run" info.
You can also post on the Cisco forums for help. Those guys a really good, free help (same goes for [H], but you will probably get more help from the Cisco forums).
Click to expand...

Hes not going to get much help on there, especially with the description of the issue he gave.

Valnar said:
I can't believe a config would crash the router, so it's either a hardware problem or IOS bug. Start with updating IOS. 12.4.15T10 is pretty solid.
Click to expand...
Really? So you can't believe that when you configure a software tunnel(sub TE), and a specially crafted packet is sent over that tunnel is would cause the router to crash? Check out the PRIST's my friend, they are released by Cisco for a reason.


miraportuga said:
I believe thats all that matters to the case
Cheers
Click to expand...
Not even close, how about FIRST starting off with a FULL show tech. Also, any tracebacks when the router crashes? Constant reboot, whats displays on the screen? If you want to find root cuase you're going to need to dig, anyone can just slap a new IOS on their router and fix the visible issue but at the same time potentially opening up new ones and breaking things that worked.

Also, get off the T train unless you absolutely require it(which im guessing you dont). Mainline is MUCH more stable and will have almost all the features that the T train will have.
 
I'd also be interested to see what exactly is causing the problem instead of just just paving over the problem with a new IOS.
 
Post the crashdump file. It's stored in flash; unless it crashed so hard that it couldn't write it or you're out of space.
 
xphil3 said:
Really? So you can't believe that when you configure a software tunnel(sub TE), and a specially crafted packet is sent over that tunnel is would cause the router to crash? Check out the PRIST's my friend, they are released by Cisco for a reason.
Click to expand...

I don't believe he is using that though. I assume his post included most of the juicy config options, so I'm taking the OP's word on that. I don't see anything out of the ordinary, although a full config would be nice.
 
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