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Need help Cisco Roter 800A

admin_2
Level 3
Level 3

hello,

This morning i was not able to ping the router on a public IP, on running show running-config i get the following

Router#show running-config

Building configuration...

Current configuration : 610 bytes

!

version 12.2

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname Router

!

logging queue-limit 100

!

ip subnet-zero

!

!

ip audit notify log

ip audit po max-events 100

no ftp-server write-enable

!

!

!

!

!

!

!

interface Ethernet0

no ip address

shutdown

hold-queue 100 out

!

interface ATM0

no ip address

shutdown

no atm ilmi-keepalive

dsl operating-mode auto

!

ip classless

no ip http server

no ip http secure-server

!

!

line con 0

no modem enable

stopbits 1

line aux 0

line vty 0 4

!

scheduler max-task-time 5000

!

end

does this config show that i have no ip address assign to ethernet0?

Many thanks in advance

Simon Whale

3 Replies 3

Harold Ritter
Cisco Employee
Cisco Employee

This pretty much the default configuration for the router. No IP addresses. Two things:

- Do a "sh start" to see if NVRAM contains the configuration you want.

- make sure your configuration register is set to 0x2102. This can be seen on the last line of output from "sh ver" command. If it is not do the following:

config memory, which will load the config from NVRAM and then

config t

config-register 0x2102

Hope this helps,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

thank you, it worked from the commands i could see that the config was still there and change the config-register bits to 0x2102 it then worked.

Thanks

Simon

jcsm1th
Level 1
Level 1

Simon,

It appears from the config, that not only do you not have an IP address configured on the router, but it is shutdown as well. The same is true for the ATM interface.

Without knowing the exact circumstances around this problem, it could be something as simple as forgetting to write the config after you set it up (changed it). Then at some point, the router was reset or lost power and reloaded the start-up config.

Just a guess.

js