[e-nsp] x650 - hardware FDB table empty

[Marcin Kuczera]

On 2013-04-16 11:27, Erik Bais wrote:
>
> Hi Marcin,
>
> If the hardware FDB is empty, you either do something specific which 
> results in software switching only …
>
> Which isn’t very likely …
>
> You should see at least some entries in the HW FDB … if the switches 
> are linked together, and you have something like LLDP or EDP running, 
> you should at least see the other switch their FDB entries.
>
> What are you trying to do with the devices and what is the config ?
>
> And are you doing something specific in regards that you have disabled 
> MAC learning for instance ? or enabled port security (1 mac per port 
> limitation security feature) ?
>

Ok, I got it. Hopefully I have additional x650 to make a test...

so - on one of the vlans I had:
disable learning vlan "monitoring-sask-in"

This is enough to turn off hardware based learning...
enabling learing on that vlan solved the issue.

Now I'll see if level of unknown-unicasts will go down...

Regards,
Marcin


> Regards,
>
> Erik Bais
>
> *From:*extreme-nsp [mailto:extreme-nsp-bounces at puck.nether.net] *On 
> Behalf Of *Marcin Kuczera
> *Sent:* dinsdag 16 april 2013 11:11
> *To:* extreme-nsp at puck.nether.net
> *Subject:* [e-nsp] x650 - hardware FDB table empty
>
> hello,
>
> At the moment I have 3 sites with x650 switch.
> All of them running 15.3.1.4 v1531b4-patch1-3
>
> In main site, the problem is that hardware fdb table is not used !?
> Hardware-learned entries:
> MAC               VlanId    Flags Port  HIT    VPLS
> ===================================================
> Hardware-learned In-use count: 0
> Num of msgs from FDB :              2258820
>
> on the other sites, this table contains entries equal to what's on 
> show fdb stats.
> I was trying to compare configs, there were some dhcp-snooping entries 
> for 2 vlans, but removing them didn't help out (or maybe it requires 
> reload ?)
>
> My main problem is that at the level of ~16k mac addresses I have a 
> lot of unknow-unicast traffic that shouldn't be there.
>
> oh - the only function that is in central site is - mirroring.
>
> Anyone knows how to turn on hardware fdb table ?
>
> Regards,
> Marcin
>
>
>

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