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a query!!!!!!!!!!!!!!!
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| my hi to all mentors........
writing a thread after long time...u can see i have ccna.but i dont consider my self one unless and until i perfect it.....i meant to say i gave ccna with no experience at all..thats the reason i still go through this forum......am working rt now thats wht made me write this thread......
i have joined a bank.. i have a router under me to which i have only a user level access...so i thought of goin and doing some r&d on it with a user logon....anyway...my rpob is that i am not able to ping my local serial port...i can ping my ethernet from the serial.......i have no console ....this is done through telnet...
so can someone or u all help me on wht all could be the reason.......
thanx... | |
| twister166 2002-11-25, 6:50 am |
| print a router config and check into it first... | |
| edmonds_robert 2002-11-25, 7:47 am |
| Also, if I remember correctly, if the serial port's line is down, you won't be able to ping it. So, if it is not connected to anything, that's your problem. | |
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| Another possibility. Perhaps the problem is that although you have performed the bringing up operation for your serial port it stays configured as a DTE (default config). Then, if an external connection to the DCE is not provided probably you can not ping your local serial interface. Try to provide this external clock connection or change the configuration of the serial port to DCE and set a proper clock rate.
Jhd | |
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| hi,
let me tell u that the router is live..its in use..the prob is that i can ping the routers serial from my server. but when i telnet my ethernet and then perform a ping to local serial it doesnt ping....
plz help.... | |
| dbowen 2002-11-30, 10:02 pm |
| You can ping the serial interface from a server located on a directly connected Ethernet segment, but you cannot ping the serial interface from inside the router (once you've telnetted into the router via its Ethernet interface)?
Is this serial interface connected to a frame relay circuit?
Also, from inside the router, can you ping the device across the WAN circuit? | |
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| the serial is connected to X.25 circiut.i mean the encapsulation is X.25.....and am able to ping the device across the WAN circuit........... | |
| dbowen 2002-12-02, 5:44 pm |
| I've experienced something like this with frame relay.
You may not have a mapping between your LOCAL serial interface's IP address and LOCAL serial interface's X.121 address. You probably DO have a mapping between the REMOTE serial interface's IP address and the REMOTE serial interface's X.121 address.
There's something peculiar about pinging serial interfaces (from the router); the ping actually goes out across the wire.
Your ping can't get to the wire. I'm not crystal clear about what's happening here (I'll post a question about how this works in the CCIE forum).
Your router might not have a statement like this:
interface serial0
x25 map ip <serial0 IP addr> <serial0 X.121 addr> |
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