[c-nsp] CFC linecards on 7600 - traffic punted to RP

[Jiri Prochazka]

Hi,

yup, it's doing BGP, currently with one external fullB bgp feed about 
six internal iBGP with just internal routes.



Jiri

Dne 22.10.2014 6:44, Rod James Bio napsal(a):
> Hello,
>
> Does your box do BGP? Does it receive the full routing table from your
> upstream?
>
> Thanks.
>
> On 10/22/14, 4:11, Jiri Prochazka wrote:
>> Hi,
>>
>> I am trying to debug strange behaviour on one of our 7600 boxes. All
>> packets coming to ports on cards with CFC modules are being punted to RP.
>>
>> Inventory is following ->
>>
>> slot 1 WS-X6704 with DFC3CXL
>> slot 2 WS-X6704 with DFC3CXL
>> slot 3 WS-X6704 with CFC
>> slot 4 WS-X6704 with CFC
>> slot 6 RSP720-3CXL
>>
>> IOS 15.2(4)S6
>>
>> The box is new, configuration has ben taken from the old box with
>> sup720. The config itself is absolutely basic, just a few VLANs, some
>> etherchannels and trunks.
>>
>>
>> Linecards in slot1&2 are working as expected (no usual traffic is punted
>> to RP). They are moving around 20 Gbps of traffic in peaks.
>>
>> As soon as I move some link from the first two slots to the slot with
>> CFC card, it punts ALL incoming traffic on that particular port to CPU.
>>
>> Does anyone have advice where to start looking?
>>
>> CEF seems to be fine..
>>
>> edge-7606s-4#sho cef state
>> CEF Status:
>>   RP instance
>>   common CEF enabled
>> IPv4 CEF Status:
>>   CEF enabled/running
>>   dCEF enabled/running
>>   CEF switching enabled/running
>>   universal per-destination load sharing algorithm, id 5E18A3C4
>> IPv6 CEF Status:
>>   CEF enabled/running
>>   dCEF enabled/running
>>
>>
>>
>> Thank you!
>>
>>
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-- 
Jiri Prochazka
network administrator (AS39392)
SuperNetwork s.r.o.

m: +420 777 87 37 67
w: http://www.superhosting.cz
e: jiri.prochazka at superhosting.cz