Ascend Archive
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Re: (ASCEND) MaxTNT 2.0.7 problems
On Fri, 5 Jun 1998, William R Charnock wrote:
> Last night we attempted an upgrade on one of our TNT's. After upgrading
> the shelf software and loading the tar image everything seemed fine. The
> TNT was pingable, telnet-able, etc. Users were getting authenticated fine
> as well. However, no packets were being forwarded to the users who were
> connected. We use proxy arp for routing internally and the TNT seemed to
> stop answering arp requests after the upgrade. We decided to turn on
> rip-v2. The routes started showing up in the router, but still the
> packets were not being forwarded by the TNT. It was now 3:30am and about
> 2 hours longer than what we had planned to spend on the upgrade, so we
> downgraded to 1.3Ap24 and magically everything started working again.
> Does anyone have any ideas what the problem might be? It is imperative
> that I figure something out because obviously we are going to have to
> upgrade to the 2.X stuff sooner or later. I haven't heard from an Ascend
> SE or Salesman for that matter in 6 months (other than calling to cancel
> appointments 3 or 4 times). HELP!
>
It sounds to me like you are out of memory.
When you load the new software, try running the 'brouterstat' command:
PPPP based on low memory (now MMMM, ceiling XXXX kByte)
PPPP = How many packets were dropped due to low memory (if this
is increasing rapidly you have a problem).
MMMM = How much memory is remaining.
XXXX = This is the ceiling, when the ceiling is reached, the TNT
basically stops forwarding packets!
You can change the ceiling using the 'brouterclip -m XXX' command. Where
XXX is the amount of memory in K that you want to have remaining before
you discard packets. I currently set my XXX to 1 or 2K since a complete
stopage in routing is just as bad as a type 2 memory error and a reboot.
This works for me in 2.0.7, however, when I tried to upgrade to 2.1.0, I
ran out of memory almost immediately.
Mike Jackson
TSCNet
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