Junos OS

Hello,

 

I've got a very specific question, or better, a request about filtering two specific logical interfaces.

I'm already filtering like this:

 

beeelze@ams-nik-er2# show snmp

filter-interfaces {

    interfaces {

        pp0;

        demux0;

        ".\.[0-50000]";

    }

    all-internal-interfaces;

}

filter-duplicates;

 

Now, I want to monitor two specific logical interfaces: ge-1/0/6.287 and ge-1/0/6.288

At the same time, all other logical interface units may NOT be monitored, for the sake of the MX5's CPU.

I've tried a lot, but am unable to come up with a solution.

 

Beelze

Hello Beeelzebub,

I think you can use the except (!) function

 

Starting with Release 12.1, Junos OS provides an except option (! operator) that enables you to filter out all interfaces except those interfaces that match all the regular expressions prefixed with the ! mark.

 

Refer: https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/snmp-filter-interfaces-configuring-junos-nm.html

 

For example, to filter out all interfaces except the ge interfaces from the SNMP get and get-next results, enter the following command:

 

Hello,

 

Yes, that's great!

I tried adding those 2 interfaces to the snmp filter-interfaces hierarchy:

 

beelze@ams-nik-er2# top show | compare

[edit snmp filter-interfaces interfaces]

     ".\.[0-50000]" { ... }

+    "!^ge-1/0/6.287";

+    "!^ge-1/0/6.288";

 

Guess I'm not that good at regular expressions.

The requirements are:

- monitor only physical interfaces (leave out the logical units)

- monitor two logical units from a specific interface

 

These two interfaces need some extra monitoring on their traffic while still monitoring only the physical interfaces.

 

Beelze

 

Beeelze

Hi Beeelze,

Can you please remove all other terms and use just following term and verify if it working

"!^ge-1/0/6.287";
"!^ge-1/0/6.288";


Thanks
Vishal

Hello,

 

If I do that, then nothing is monitored anymore 😞

 

Marijn

HI Beeelzebub,

 

I have done some testing and following configuration is working perfectly for me. I think it should help you too

 

vlsingh@vlsingh-T470:~$ snmpwalk -c public -v 2c 10.85.156.55 1.3.6.1.2.1.2.2.1.10
iso.3.6.1.2.1.2.2.1.10.1 = Counter32: 15509891
iso.3.6.1.2.1.2.2.1.10.4 = Counter32: 0
iso.3.6.1.2.1.2.2.1.10.5 = Counter32: 0
iso.3.6.1.2.1.2.2.1.10.6 = Counter32: 5964762
iso.3.6.1.2.1.2.2.1.10.7 = Counter32: 0
iso.3.6.1.2.1.2.2.1.10.8 = Counter32: 0
iso.3.6.1.2.1.2.2.1.10.9 = Counter32: 0
iso.3.6.1.2.1.2.2.1.10.10 = Counter32: 0
<SNIP>

 

set snmp filter-interfaces interfaces "!(^ge-1/0/0.0|^xe-2/0/0.8)"

 

 

snmpwalk -c public -v 2c 10.85.156.55 1.3.6.1.2.1.2.2.1.10  <<<<<<<<<<<< now only this counter is showing up
iso.3.6.1.2.1.2.2.1.10.720 = Counter32: 2590334
iso.3.6.1.2.1.2.2.1.10.743 = Counter32: 2867704


PS: Please accpet my response as solution if it asnwers your query, kudos are appreciated too!

Thanks

Vishal

Hi vlsingh,

 

Great, that did the job!

I had to redo an snmp walk in my NMS and it only showed the two interfaces in this example.

So perhaps the previous post did come up with a solution, but this is a cleaner one.

 

Thank you very much!

 

Beelze