PM2eR <-> Adtran DSU IV ESP <-> Leased 56K <-> Adtran CSU/DSU <-> Cisco 2501
I suspect the Cisco serial port is bad, but I'm not positive. The CSUs both
test the line OK end-to-end. When I look at the Cisco serial port is says
the port is up, but the line protocol is down.
#show interface serial 1
Serial1 is up, line protocol is down
Hardware is HD64570
Internet address is 192.168.2.1/30
MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation PPP, loopback not set, keepalive set (10 sec)
LCP Listen
Closed: cdp
Last input 02:22:43, output 00:00:06, output hang never
Last clearing of "show interface" counters 06:21:50
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
4686 packets input, 65604 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
8046 packets output, 112644 bytes, 0 underruns
0 output errors, 0 collisions, 1289 interface resets
0 output buffer failures, 0 output buffers swapped out
992 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
I guess this means the Cisco is receiving and at least trying to send since
there are a goodly number of both input and output packets??
I went through Cisco's troubleshooting drill with the CSU in loopback, but
still the line protocol doesn't come up, and I don't see the keepalive
reports they mention in the debug output. The debug output just keeps saying
the port was reset, as is confirmed by the interface resets above.
On the PM end, it reports that it regularly attempts to restart W1. The
Cisco LED flashes every 33 sec.
Can anyone see what I'm doing wrong, or tell me how to confirm whether the
Cisco serial port is defective.
Thanks!
Jerry O'Brien
----- Original Message -----
From: MegaZone <megazone@megazone.org>
To: <jobrien@cuttingedge.net>
Sent: Tuesday, February 23, 1999 7:10 PM
Subject: Re: PM2eR - Cisco 2501 connection
>X-Trade-Organization-1: Internet Service Providers' Consortium (ISP/C)
>X-Trade-Organization-2: Director At Large <URL:http://www.ispc.org/>
>X-Mailer: ELM [version 2.4ME+ PL38 (25)]
>MIME-Version: 1.0
>Content-Type: text/plain; charset=US-ASCII
>Content-Transfer-Encoding: 7bit
>
>Once upon a time Jerry O'Brien shaped the electrons to say...
>>I see you've helped a few people with this sort of thing; I can't get this
>>setup to work:
>>
>>PM2eR <-> Adtran DSU IV ESP <-> Leased 56K <-> Adtran CSU/DSU <-> Cisco
2501
>>
>>The CSU status looks good on both ends, but I can't ping the Cisco, I get
>
>PPP isn't even beginning, let along completing, so there is no link.
>
>>frame & abort errors and the PM debug reports:
>>
>>...
>>Sending LCP_CONFIGURE_REQUEST to port W1 of 10 bytes containing:
>>01 13 00 0a 05 06 0d b4 b5 52
>>Sending LCP_CONFIGURE_REQUEST to port W1 of 10 bytes containing:
>>01 14 00 0a 05 06 0d b4 b5 52
>>Connection Failed
>>Enabling port W1 (DMA)
>>Sending LCP_CONFIGURE_REQUEST to port W1 of 10 bytes containing:
>>01 01 00 0a 05 06 38 38 c0 8b
>>Sending LCP_CONFIGURE_REQUEST to port W1 of 10 bytes containing:
>>01 02 00 0a 05 06 38 38 c0 8b
>>Sending LCP_CONFIGURE_REQUEST to port W1 of 10 bytes containing:
>>01 03 00 0a 05 06 38 38 c0 8b
>>Sending LCP_CONFIGURE_REQUEST to port W1 of 10 bytes containing:
>>01 04 00 0a 05 06 38 38 c0 8b
>
>The PM is trying to start PPP - but note it is not *receiving* anything.
>Either the Cisco is not sending anything, or the link is not good and
>packets are not actually making it.
>
>You'd have to check on the Cisco to see if:
>1. It is receiving these packets from the PM.
>2. Replying.
>
>If it isn't receiving them, the link isn't good. If it is receiving them
>but it isn't replying, something us wrong in the Cisco config. And if
>it is replying - then something is wrong with the link because the PM
>isn't getting them.
>
>I don't know IOS well, but nothing leapt out at me. And the ComOS
>looked ok.
>
>-MZ
>--
>-=*X GOT CLUE? ISPF II - SAN DIEGO, CA 3/6-10 <URL:http://www.ispf.com/>
X*=-
><URL:mailto:megazone@megazone.org> Gweep, Discordian, Author, Engineer,
me..
>Join ISP/C Internet Service Providers' Consortium
<URL:http://www.ispc.org/>
>"A little nonsense now and then, is relished by the wisest men"
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>
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