topic Re: The percentage of flows with a client MAC available in ExtremeCloud IQ- Site Engine Management Center

The percentage of flows with a client MAC available

Anonymous — Mon, 27 Apr 2020 16:49:02 GMT

Hi There,

Have an alarm on XMC called the following:

Client MAC Availability Low

The alarm is generated based on below 90% of the following “The percentage of flows with a client MAC available”

The alarm seems to actually be stating the following of 0%

statistic: netflowClientMacAvailableRate, value: 0.0, compared to: 90.0

I don’t understand what this is actually telling me, how to fix it, or indeed if this is an issue?

XMC version is: 8.1.3.65

Analytics engine is using Netflow and N+15 mirring based on EOS S8 switches running firmware 8.62.04.0002

As far as I can see everything else seems to running fine with Analytics, no obvious problems.

Many thanks in advance

Re: The percentage of flows with a client MAC available

Zdeněk_Pala — Tue, 28 Apr 2020 14:33:13 GMT

I guess the alarm is telling you:

The analytics engine is not receiving L2 information from Netflow.

do you have following lines in your EOS?

set netflow export-version 9
set netflow export-data enable mac
set netflow export-data enable vlan

Re: The percentage of flows with a client MAC available

Anonymous — Tue, 28 Apr 2020 14:46:09 GMT

Hi Zdenek,

Thanks for getting back.

Just checked their config and it is missing the entry related to mac:

# netflow
set netflow export-interval 1
set netflow export-destination 172.16.128.10 2055
set netflow export-version 9
set netflow export-data enable vlan
set netflow port tg.1.1-16 enable rx
set netflow port tg.2.1-16 enable rx
set netflow port tg.3.1-11,13-16 enable rx
set netflow port tg.4.2-8,101-104,201-204 enable rx
set netflow port tg.5.2-7,101-104,201-204 enable rx
set netflow template refresh-rate 30 timeout 1
set netflow cache enable

Will make the change and keep you posted.

Thanks