[AusNOG] Assistance in picking a router

[Beeson, Ayden]

I've had a look, it shows enabled for distributed and running.

I am seeing some punted packets, but they are all for "destined for us" which is normal.

I'll have to keep an eye on that, I checked our secondary BGP router at Canberra (6503) and its showing the same sort of numbers for the FIB and the BGP networks / prefix's as well.

Thanks,
Ayden Beeson


-----Original Message-----
From: Tom Lanyon [mailto:tom+ausnog at oneshoeco.com]
Sent: Thursday, 18 July 2013 1:00 PM
To: Beeson, Ayden
Cc: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] Assistance in picking a router

On 18/07/2013, at 11:57 AM, "Beeson, Ayden" <ABeeson at csu.edu.au> wrote:
> We are not filtering any prefixes at all; it's a literal full feed.
>
> I haven't found any problems with it cutting off anything yet, it's theoretically possible it is but it's not something we have seen.
>
> I had a quick look, I'm seeing this:
>
> UTS-4500#show cef fib
> 14573 allocated IPv4 entries, 0 failed allocations
> 13295 allocated IPv6 entries, 0 failed allocations

>
> Which is interesting, I am seeing 440k BGP prefix's in IPv4 alone, but it hasn't caused us any problems, maybe cef is summarising by network or something....
>
> CEF is not something I know a HUGE amount about tbh, enough to get its function and perform basic troubleshooting, my understanding is if the FIB was full it would software switch the packets and we are definitely not seeing any CPU load on it.


As you say, a full table should be over 440k:

#show cef fib
458950 allocated IPv4 entries, 0 failed allocations
13437 allocated IPv6 entries, 0 failed allocations

It's interesting that you don't see any failed allocations.

Does 'show ip cef summ' show it fully enabled?  Does 'show ip cef switching statistics [feature]' show punted packets?

Tom

Charles Sturt University

| ALBURY-WODONGA | BATHURST | CANBERRA | DUBBO | GOULBURN | MELBOURNE | ONTARIO | ORANGE | PORT MACQUARIE | SYDNEY | WAGGA WAGGA |

LEGAL NOTICE
This email (and any attachment) is confidential and is intended for the use of the addressee(s) only. If you are not the intended recipient of this email, you must not copy, distribute, take any action in reliance on it or disclose it to anyone. Any confidentiality is not waived or lost by reason of mistaken delivery. Email should be checked for viruses and defects before opening. Charles Sturt University (CSU) does not accept liability for viruses or any consequence which arise as a result of this email transmission. Email communications with CSU may be subject to automated email filtering, which could result in the delay or deletion of a legitimate email before it is read at CSU. The views expressed in this email are not necessarily those of CSU.

Charles Sturt University in Australia  http://www.csu.edu.au  The Grange Chancellery, Panorama Avenue, Bathurst NSW Australia 2795  (ABN: 83 878 708 551; CRICOS Provider Numbers: 00005F (NSW), 01947G (VIC), 02960B (ACT)). TEQSA Provider Number: PV12018

Charles Sturt University in Ontario  http://www.charlessturt.ca 860 Harrington Court, Burlington Ontario Canada L7N 3N4  Registration: www.peqab.ca

Consider the environment before printing this email.

Disclaimer added by CodeTwo Exchange Rules 2007
http://www.codetwo.com