I am currently taking a networking course and we are using some of the cisco curriculum. I obtained my ccna about 4 years go and and relearning some new things. I am part of a 4 person lab assistant team that is in charge of maintaing the routers. We have run into a problem, we can't seem to ping between routers. We have erased the config files and started from scratch and it still will not ping. Is there anything that will inhibit the routers from relaying the ping packets? Its not that big of an issue but the other students will need to be able to ping to test connectivity. Any help will be appreciated.

here is a copy of one of the cofig files.


!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Lab-B
!
enable secret 5 $1$egQD$x.gPBxTglkrBDqVnPfBgP/
enable password cisco
!
ip subnet-zero
no ip domain-lookup
ip host Lab-A 192.5.5.1 205.7.5.1 201.100.11.1
ip host Lab-B 219.17.100.1 199.6.13.1 201.100.11.2
ip host Lab-C 223.8.151.1 204.204.7.1 199.6.13.2
ip host Lab-D 210.93.105.1 204.204.7.2
!
!
!
interface Ethernet0
ip address 219.17.100.1 255.255.255.0
no ip directed-broadcast
!
interface Serial0
bandwidth 56
ip address 199.6.13.1 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
no shutdown
clockrate 56000
!
interface Serial1
ip address 201.100.11.2 255.255.255.0
no ip directed-broadcast
no shutdown
!
router rip
network 199.6.13.0
network 201.100.11.0
network 219.17.100.0
!
ip http server
ip classless
!
!
line con 0
login
password cisco
transport input none
line aux 0
line vty 0 4
login
password cisco

!
end


Thanks
Joe

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I forgot to mention that we are able to telnet to each of the routers on the stack. So there is connection between them.

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Maybe you can tell us your network setup, what cables you're using to join the routers, and if any of the other config files are different from the one displayed below. I notice you have the clock rate set on serial 0, so are you using back to back serial cable. Telnet but no icmp, does one of the joining routers have an access-list on it?

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Do you have a nameserver defined on your routers?
=====[snippet]

ip name-server #.#.#.#

=====[snippet]


Once done and written to mem then do the following. Do this from the router that you applied the ip name-server #.#.#.# to.

1. Ping the routers address.
2. Ping the other routers address.
3. Ping a computer on the network somewhere.

Let me know what you get.

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you still left some info out

where's the other config ?

where are you pining from and to ?

you have ip host configured
are you using names or ip addresses ?

do an ip extended ping from a source and dest ip address

debug ip icmp first

is the destination ip the same one oyu're pinging ?

__________________
http://www.cisco.com/univercd/

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Will it telnet from a computer to the router, or from router to router? Also, i dont have the config in front of me right now, but have u set the line passwords? line vty 0 5
pass cisco
login

gl

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