[c-nsp] ASR1001 RAM

[Gabriel]

Hi,

we have 2 ASR1001 in one location. They each receive a full table from
different providers and have an iBGP session between them. One of them
generated this message today:

*Aug 11 23:11:16.983: %FIB-2-FIBDOWN: CEF has been disabled due to a
low memory condition. It can be re-enabled by configuring "ip cef
[distributed]"

For some reason, it only saw 500k prefixes today (I'm assuming the
provider is doing some aggregation before sending the full table?).
I had to put some filtering in place and then re-enabled CEF. IOS-XE
version is 3.07.01.S.152-4.S1

We have the exact same setup in another location (with different
ISPs). The only difference is the IOS-XE version: 3.06.00.S.152-2.S. I
saw one of these exceed 500k and there were no error messages
whatsoever.



On Mon, Aug 11, 2014 at 9:35 PM, Rich Lewis <RLewis at sis.tv> wrote:
> Those memory figures below are from an ASR1001 running IOS-XE 03.09.00.S / 15.3(2)S.
>
> What was the image that you ran into memory issues with? Just so I know to avoid it! :-)
>
>
>> -----Original Message-----
>> From: Gustav UHLANDER [mailto:gustav.ulander at steria.se]
>> Sent: 09 August 2014 23:33
>>
>> Yea that depends on sw version.
>> We ran into the issue when upgrading to a newer image on routers that receive full
>> feeds from upstream.
>> Sent it to tac and they said it was memory issue.
>>
>> Skickas med OWA för iPad
>> ________________________________________
>>> Från: cisco-nsp <cisco-nsp-bounces at puck.nether.net> för Rich Lewis
>>> <RLewis at sis.tv>
>>> Skickat: den 6 augusti 2014 21:30:55
>>>
>>>
>>> FWIW, we have full tables on an ASR1001 with 4GB RAM, and with add-path
>>> enabled:
>>>
>>> 503890 network entries using 124964720 bytes of memory
>>> 982424 path entries using 110031488 bytes of memory BGP using 281251490 total
>>> bytes of memory
>>>
>>> I guess it depends what else you're doing, but 4GB would seem ample on the face
>>> of it.
>
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