[c-nsp] ICMP Mask Requests on 6500

[Christopher.Marget at usc-bt.com]

Solaris 8 used ICMP mask requests as a part of the jumpstart process.  Newer versions might also.

But they didn't send requests to a router, they sent directed requests to the jumpstart server IIRC.

/chris

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of John Neiberger
> Sent: Friday, January 07, 2011 5:10 PM
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] ICMP Mask Requests on 6500
> 
> This is an interesting one. I have a TAC case open, but I thought I'd
> check to see if anyone had ever seen this before. We had some old
> equipment that uses ICMP mask requests to get its subnet information.
> When this equipment is connected to an old 7513 running 11.1 code, the
> router replies to the mask request with an ICMP mask reply. When we
> move that device to a 6513 (Sup720, 12.2 code) we can see the mask
> request come in, but the 6500 never sends a reply. According to Cisco,
> the code to do the reply is in the IOS, 12.2(18)SXF9, so it must be a
> bug. However, it also didn't work in 12.2(33)SXI5.
> 
> I'm beginning to think the code is actually being deprecated since no
> one really uses this feature any more. Have any of you ever had to
> deal with ICMP mask requests and replies before?
> 
> Thanks!
> John
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/