Need help with 2500 trouble shooting

[smanghillis]

I have two routers connected via point to point DS1--both 2501's. I have connected a hub to each Ethernet Interface and a PC to the hub. For some reason I can't ping the LAN side of either router from the local PC. I have no idea as to why.

Here are the interfaces for each router:

___________________________________

sh conf

Using 417 out of 32762 bytes

!

version 11.1

service udp-small-servers

service tcp-small-servers

!

hostname Hiram

!

enable secret 5 $1$98xK$eDEU9fnE36HI2VewylEcW/

!

!

interface Ethernet0

ip address 15.100.100.1 255.255.255.0

!

interface Serial0

ip address 172.17.1.1 255.255.255.252

!

interface Serial1

no ip address

shutdown

!

no ip classless

ip route 0.0.0.0 0.0.0.0 Serial0

______________________________________________

sh conf

Using 384 out of 32762 bytes

!

version 11.1

service udp-small-servers

service tcp-small-servers

!

hostname Fidel

!

enable secret 5 $1$PJc4$YiCu7bqx/8YMWxE65Yh1o.

!

!

interface Ethernet0

ip address 15.100.200.1 255.255.255.0

!

interface Serial0

ip address 172.17.1.2 255.255.255.252

!

interface Serial1

no ip address

shutdown

!

no ip classless

!

Any help would be appreciated

[deilert]

If you can not ping from the PC to the ethernet on your local router the gateway on the PC is set incorrectly

[thisisshanky]

Check your default gateway configurations on the pc..

[rjackson]

the default gateway is only needed to ping outside of the local network. you should be able to ping the local router even if you dont configure a gateway.

what address is in the pc and which ethernet is it attached to? Can the pc ping itself?

[deilert]

Richard is correct re the default gateway this should not be an issue .

Another thing you may want to do is a 'sh ip arp e0' on the router.

[smanghillis]

thank you for the suggestion. Where does this command line go in the config?

[smanghillis]

having my IT tech send me the info and test the ping. Thank you very much for your help

[smanghillis]

first router/ethernet--15.100.100.2

second router ethernet--15.100.200.2

[deilert]

have your IT tech log on to the router and do a 'sh ip arp ' from the commang line and paste the results in a post

[smanghillis]

Fidel#sh ip arp

Protocol Address Age (min) Hardware Addr Type Interface

Internet 15.100.200.2 8 0009.6b8c.0738 ARPA Ethernet0

Internet 15.100.200.1 - 00e0.1ea9.7274 ARPA Ethernet0

Fidel#

---------------------------Hiram#sh ip arp

Protocol Address Age (min) Hardware Addr Type Interface

Internet 15.100.100.1 - 00e0.1ea9.7270 ARPA Ethernet0

[smanghillis]

Done and Done.

Now, I can ping from the server to the local router on either end and when telnet'ed in via the console port, can ping the router at the opposite end but I can't ping from the local server to the remote (Fidel) router...and idea as to why?

[smanghillis]

everything is fine from server to router on the local ends...however from the server I can ping the local router but not the remote, however when I telnet in, I can ping the remote (Fidel) router. Can you check the configs in the original post and see if there's something wrong there?

[MUHAMMAD SHAHEEN]

Hi,

Now your Default Gateway comes into play to allow your server to ping a remote router or server at the remote end.

Your server's default gateway will be your router's LAN IP address on the same IP net.

Your Fidel router also need to have this line inserted to get both ends talking to each other

no ip classless

ip route 0.0.0.0 0.0.0.0 Serial0

DO the above and it should work.

You may want to try to use traceroute x.x.x.x (Ip address of remote device) command on your routers

or use tracert x.x.x.x (IP address of remote device) on windows machine on command prompt. This will tell you where is proble is ?

All the best

Shaheen

[smanghillis]

Please excuse my ignorance but my router tech is on vacation, how do I add the line to the Fidel router?

[thisisshanky · Accepted solution]

You need,

a laptop or pc, with a com port

blue console cable (flat with rj45 connectors on either ends)

db9 adapter (grey in color)

The console port of router needs to be hooked to the db 9 adapter. and the db 9 adapter needs to be hooked ot the com port.

Open hyperterminal software (Goto Start menu, click Run, and type "hypertrm" and hit enter)

Open a new connection, give a name, select the com1 port , and give the speed settings as 9600, 8, none, 1, none ( or click restore defaults button) and click ok.

Hit enter key, to access the console. Router prompt should come up.

Router>enable

enter password:

Router#config t

Router(config)#ip classless

Router (config)#ip route

you can configure the required commands in this mode.

Once the commands are entered, exit out of this mode.

Router(config)#exit

Router#write memory ------ this command saves the commands u entered into configuration file. (NVRAM)

Router#exit --- this should take you out of the router..

To verify, try pinging from the server.