Re: Serial encap and clock rate failed HDLC

From: Nick Driver (routernut@xxxxxxxxx)
Date: Thu Nov 29 2001 - 10:19:00 GMT-3

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You probably are working on an async interface not a
sync interface. The speed is limited on the async.

-Scott

--- Scott Decker <sdecker@bellsouth.net> wrote:
> 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
>

• Next message: Phil: "Re: Logical TR interface"
• Previous message: Thomas Larus: "connection refused by remote host"
• Maybe in reply to: Scott Decker: "Serial encap and clock rate failed HDLC"
• Next in thread: Duy Nguyen: "Re: Serial encap and clock rate failed HDLC"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

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