[j-nsp] Rationale behind "set chassis aggregated-devices ethernet device-count"

Michael Loftis mloftis at wgops.com
Fri Aug 23 13:00:03 EDT 2013


Heh, thats what I get for making an assumption!

On Fri, Aug 23, 2013 at 9:38 AM, Phil Mayers <p.mayers at imperial.ac.uk> wrote:
> On 23/08/13 17:14, Michael Loftis wrote:
>>
>> Part of it probably has to do with SNMP.  Pre-allocating the count
>> keeps the SNMP index ID's from changing when devices are
>> added/removed.  ae0 is always index blah.  A lot of tools are very
>> dependent upon the SNMP index ID.
>
>
> I don't think so TBH. Having just snmpwalk'ed a JunOS box, the aeX
> interfaces and sub-ints ifindex values appear allocated sequentially:
>
> IF-MIB::ifDescr.521 = STRING: ae0
> IF-MIB::ifDescr.522 = STRING: ae0.32767
> IF-MIB::ifDescr.524 = STRING: ae1
> IF-MIB::ifDescr.529 = STRING: ae0.1
> IF-MIB::ifDescr.530 = STRING: xe-1/0/0.1
> IF-MIB::ifDescr.531 = STRING: ae0.11
> IF-MIB::ifDescr.532 = STRING: ae0.10
> IF-MIB::ifDescr.533 = STRING: ae0.9
> IF-MIB::ifDescr.534 = STRING: ae0.8
> IF-MIB::ifDescr.535 = STRING: ae0.7
> IF-MIB::ifDescr.536 = STRING: ae0.6
> IF-MIB::ifDescr.537 = STRING: ae0.5
> IF-MIB::ifDescr.538 = STRING: ae0.4
> IF-MIB::ifDescr.539 = STRING: ae0.3
> IF-MIB::ifDescr.540 = STRING: ae0.2
> IF-MIB::ifDescr.541 = STRING: xe-1/0/0.11
> IF-MIB::ifDescr.542 = STRING: xe-1/0/0.10
>
> So, unless I'm misunderstanding what you mean, it's not doing anything
> interesting here.



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