[e-nsp] x650 FDB table full ???

Robert Kerr r.kerr at cranfield.ac.uk
Mon Mar 18 10:03:33 EDT 2013


On 15/03/13 20:16, Marcin Kuczera wrote:
> hello,
> 
> recently my switch shows:
> 03/15/2013 15:33:54.64 <Warn:HAL.FDB.L2SlotTblFull> Slot-1: FDB entry
> not added on slot 1. Hardware Table full.
> 
> 
> Slot-1 SummitStack-GZE.12 # show fdb stats
> 
> Total: 15731 Static: 0 Perm: 0 Dyn: 15731 Dropped: 0
> FDB Aging time: 300
> 
> 2 switches in stack.
> 
> Specyfication sais - 32k L2 addresses..
> 
> What's wrong ?

These two commands are probably relevant:

 show iproute reserved-entries statistics
 debug hal show forwarding distributions

It all depends how the memory is split up - there are quite a lot of
configuration options here. The 32k number probably assumes you have no
L3 routes, no snooped multicast entries, and no ACLs taking up memory.

'Extended IPv4 Host Cache' in chapter 31 of the XOS concepts guide is
worth a read. If you're not doing much in the way of L3 stuff on the
stack it looks like you can reduce the number of entries reserved for
routes in order to free up more for hosts.

-- 
 Robert Kerr


More information about the extreme-nsp mailing list