[c-nsp] CEF fun in SXF

[Jerome Covini]

Gert Doering wrote:
> Hi,
>
> On Mon, Apr 24, 2006 at 10:09:11PM -0400, Phil Rosenthal wrote:
>   
>> Bringing this back up from the dead, but we ran into this today on a  
>> SXF4 box with 6748-dfc3bxl and 6704-dfc3bxl.  Anyone know if this  
>> will be fixed ever?
>>
>> TAC seemed to be clueless about this issue.
>>     
>
> Hmmm.  Now this is interesting - TAC was quite helpful on our issue
> ("shutdown a VLAN interface, and traffic on other VLANs is getting
> dropped").  Turns out it was related to uRPF - something in the hardware
> gets confused, and other interface's traffic is uRPF dropped due to
> looking up the wrong interface's CEF routes.
>
> We have upgraded to SXF2 (Sup720/3B, no DFC cards), and since then,
> we haven't seen any issues regarding "VLAN interface shutdown" since then.
>
> TAC case # ist SR 602601049,  bug ID CSCsc90277
>
> gert
>
>   
Can this happen without  RPF and mls rate limit configured onto vlan 
interface ?
jc


	

	
		
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