From: Scott Decker (sdecker@xxxxxxxxxxxxx)
Date: Wed Nov 28 2001 - 20:46:12 GMT-3
Hi gang:
I've solved this issue in my lab already, but I'm wondering if any of
you can comment on WHY it happened?
Two routers, standard V.35 DCE to DTE on standard serial ports (FSIP-8
to WIC-1T). If I leave the encap to HDLC and set DCE end to clock rate
56000, I get the following messages from debug serial events:
Router-C#debug serial int
Serial network interface debugging is on
Router-C#debug serial
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
packet
4d02h: Serial1/5: HDLC myseq 7, mineseen 0, yourseen 0, line down
Serial network packets debugging is on
Router-C#
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
4d02h: Serial1/5: HDLC myseq 8, mineseen 0, yourseen 0, line down
4d02h: Serial1/5: attempting to restart
4d02h: Serial1/5: Reset from PC 0x600D7FB4
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
4d02h: Serial1/5: HDLC myseq 9, mineseen 0, yourseen 0, line down
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
4d02h: Serial1/5: HDLC myseq 10, mineseen 0, yourseen 0, line down
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
4d02h: Serial1/5: HDLC myseq 11, mineseen 0, yourseen 0, line down
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
4d02h: Serial1/5: HDLC myseq 12, mineseen 0, yourseen 0, line down
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
4d02h: Serial1/5: HDLC myseq 13, mineseen 0, yourseen 0, line down
4d02h: Illegal HDLC serial type code 776, PC=0x600D56A4
Changing encap to PPP makes it work fine. And here's the fun part: I
changed the clock rate to 64000 and it came right up! What gives? It
doesn't matter really, it only took about 1 minute to t-shoot and fix,
but it's bugging me.
Sorry to be AR! It's the geek in me, I guess. :-)
Scott
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