[a-nsp] VLAN in SNMP Interface Table

[Florian Hibler]

Hi Mike,

depending on the platform and use case you could do it via L2 sub-interfaces, but that is not yet supported in conjunction with EVPN/VXLAN. 
Supposed to changed in the foreseeable future. Your Arista SE could help you out with more information in this case :)

Still not sure if this a real fit for you, but it might be a good starting point.

IF-MIB::ifIndex.1340866597 = INTEGER: 1340866597
IF-MIB::ifDescr.1340866597 = STRING: Ethernet37.1019
IF-MIB::ifHCInOctets.1340866597 = Counter64: 674
IF-MIB::ifHCInUcastPkts.1340866597 = Counter64: 6
IF-MIB::ifHCOutOctets.1340866597 = Counter64: 662
IF-MIB::ifHCOutUcastPkts.1340866597 = Counter64: 6

This output is from a 7280SR-48C6 running EOS 4.23.1F.

Best regards,
Florian

-- 
Florian Hibler
Systems Engineer
Arista Networks, Inc.

(e) florian at arista.com
(m) +49 171 7576089
(w) http://www.arista.com

> On Dec 10, 2019, at 15:28, Mike Hammett <arista-nsp at ics-il.net> wrote:
> 
> BTW: I did also ask on Extreme-NSP, but that list seems dead.
> 
> 
> https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-monitor-traffic-in-and-out-of-a-vlan <https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-monitor-traffic-in-and-out-of-a-vlan>
> 
> 
> I take away from that page that it's a switch-level output (such as this VLAN in aggregate across the switch has X in and X out).
> 
> Now that said, I do also see this page: https://gtacknowledge.extremenetworks.com/articles/How_To/Collect-VLAN-statistics-via-CLI-in-EXOS <https://gtacknowledge.extremenetworks.com/articles/How_To/Collect-VLAN-statistics-via-CLI-in-EXOS>
> 
> That has a similar command, but is broken out by port. Maybe x670 will do what I'm after.
> 
> 
> 
> -----
> Mike Hammett
> Intelligent Computing Solutions <http://www.ics-il.com/>
>  <https://www.facebook.com/ICSIL> <https://plus.google.com/+IntelligentComputingSolutionsDeKalb> <https://www.linkedin.com/company/intelligent-computing-solutions> <https://twitter.com/ICSIL>
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> From: "Karsten Thomann" <karsten_thomann at linfre.de>
> To: "Doug McIntyre" <merlyn at geeks.org>, "Joris Claassen via arista-nsp" <arista-nsp at puck.nether.net>
> Sent: Monday, December 9, 2019 10:17:33 AM
> Subject: Re: [a-nsp] VLAN in SNMP Interface Table
> 
> Hi,
> 
> I'm pretty sure I had such counters on an Extreme X670 Switch, but you had to enable that feature per vlan and use non standard oids within their own oid space.
> 
> If Extreme is an option for you I can check some more details, as I should have the self build cacti plugin lying around somewhere...
> 
> Kind regards 
> Karsten 
> 
> 
> 
>   Ursprüngliche Nachricht  
> 
> 
> Von: merlyn at geeks.org
> Gesendet: 9. Dezember 2019 14:36
> An: arista-nsp at puck.nether.net
> Betreff: Re: [a-nsp] VLAN in SNMP Interface Table
> 
> 
> On Sun, Dec 08, 2019 at 06:02:47PM -0600, Mike Hammett wrote:
> > This looks like it's only on layer 3 interfaces, which doesn't do me a whole lot of good.
> 
> 
> I don't know of any hardware that keeps track of layer-2 VLAN packet
> counts going through the switch. Generally, stats are updated on times
> when switches have to _do_ something. Forwarding along layer-2 is
> usually done in ASICs and the switch doesn't do anything special for
> decoding the VLAN headers. OOTH, doing a layer-3 routing termination
> is doing something, which is where I measure everything, on the
> layer-3 edge. And every type of hardware I touch can monitor that.
> 
> As posted before, if you need this sort of thing, you'll probably have
> to go to sflow type collectors in order to get what you want. Or
> consider making your network do layer-3 VLAN terminations somewhere so
> that you can measure it.
> 
> Perhaps there is some weird EVPN/vxlan setup you could make that the
> switch will have to do punting of traffic out to a VTEP, and you could
> measure those counts, but I have zero experience monitoring such a setup.
> 
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