clogin, "show controllers" and ios 12.3

[David Croft]

Hi Gabriel,

I had this exact same problem. You will need the patch to "expect", 
which is on http://www.shrubbery.net/rancid/ (which seems to be down 
right now). Basically it adds a line to exp_chan.c:

--- exp_chan.c.orig Thu Jul 31 14:35:07 2003
+++ exp_chan.c  Fri Mar 12 22:58:42 2004
@@ -119,6 +119,7 @@
       * nonblocking, the read will never block.
       */

+ fcntl(esPtr->fdin, F_SETFL, O_NONBLOCK);
      bytesRead = read(esPtr->fdin, buf, (size_t) toRead);
      /*printf("ExpInputProc: read(%d,,) = %d\r\n",esPtr->fdin,bytesRead);*/
      if (bytesRead > -1) {

and also rancid version 2.3 if you find it also loops repeatedly around 
looking for missing commands.

David


Gabriel wrote:
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> 
> Hello All.
> 
> I've recently discovered the cause for my do-diffs sessions hanging.  It
> seems that "show controllers" on IOS 12.3(1) and 12.3(3)B will hang
> sometimes. It seems to hang about once every other, or every third time.
> 
> Hardware:
>     7206 VXR / NPE-G1 / DS3 cards and Ethernet cards
> 
> I've commented out the "show controllers" calls, and it's not hanging
> anymore, so it would seem to be an issue there.
> 
> It is probably a bug in IOS 12.3.
> 
> More investigation is clearly needed, but I thought that some might benefit
> from this (or if this is a known issue, that'd be neat to know about, too).
> 
> HTH,
> Gabriel
> 
> 
> 
> - --
> Gabriel Cain                                       www.dialupusa.net   
> Senior Systems Administrator                   gabriel at dialupusa.net
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>         Technology for the sake of business.
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