n00dles at nix-jutsu
Nov 12, 2009, 1:12 AM
Post #2 of 3
(397 views)
Permalink
|
|
Re: Cisco 800 stops forwarding layer 3 via switchport
[In reply to]
|
|
On Tuesday, 10 November 2009 at K:13:13 -0600, Jesse Alexander wrote:
> I have seen this issue happen with a customer 800 series, and I think there
> were just too many IP's for it to handle. If I remember correctly, they
> were using an 871. In my case, we think it couldn't handle a /22 (I think
> it was a /22, it was a couple of years ago).
Each site of which there a large number(a chain of hotels) each has a
/27, we are currently seeing the issue on 10-15 sites randomly. I'm
doubtful that the kit is unable to handle the load.
> The customer would be fine for a period of time (a few hours or less), then
> would not be able to reach the world until they rebooted it. Because we
> didn't manage the 800, we had no visibility to it, so I cannot tell you
> the specific reason. Because the issue went away after he customer
> upgraded their hardware, we can only assume that the 800 was insufficient
> for their needs.
Our customer wont consider swaping kit out, your experiance sounds more
advanced than ours we are only seeing the issue sporadicly.
>
> -Jesse
>
>
> -----Original Message-----
> From: cisco-nsp-bounces [at] puck
> [mailto:cisco-nsp-bounces [at] puck] On Behalf Of
> n00dles [at] nix-jutsu
> Sent: Tuesday, November 10, 2009 10:43 AM
> To: cisco-nsp [at] puck
> Cc: networks [at] timico
> Subject: Re: [c-nsp] Cisco 800 stops forwarding layer 3 via switchport
>
> Hello all,
>
> We have a strange issue between PIX 501's running 6.3(5) and our 800 series
> routers, we are using verious 800s(857/877) with a spread of IOS versions.
> The problem manifests itself as a drop of connectivity between the two
> devices, that being we lose layer 3 forwarding out of the switch-port
> module on the 800.
>
> We are of the opinion we have ethernet connectivity between devices as
> the mac-address table is being populated after being cleared, and
> linkstate show up/up but we cannot ping, nor can the device ARP for
> the PIX.
>
> Static ARP entrys also no not fix the issue, the only way we have found
> so far to fix the problem is to reboot the 800.
>
> Has anyone experienced this kind of problem before?
>
> Regards
>
> --
> _
> Chris Nicholls ASCII ribbon campaign ( )
> Timico Network Operations - against HTML, vCards and X
> chris [at] timico - proprietary attachments in e-mail / \
> _______________________________________________
> cisco-nsp mailing list cisco-nsp [at] puck
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>
---end quoted text---
--
_
Chris Nicholls ASCII ribbon campaign ( )
Timico Network Operations - against HTML, vCards and X
chris [at] timico - proprietary attachments in e-mail / \
_______________________________________________
cisco-nsp mailing list cisco-nsp [at] puck
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/
|
