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1810G-24 SNMP interface IDs

 
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Richard Scott_1
Frequent Advisor

1810G-24 SNMP interface IDs

Hello,

I have an 1810G-24 with four trunks (LACP) created.

SNMP lists 29 interface (1-29) - how do these map to the 24+4 = 28 ports?

I.e. is port #1 interface #1? Or interface #2?
Is trunk #1 interface #25 or #26?

I can't seem to get this information via SNMP tools like I can on my 1800s.

Richard.

 

 

P.S. This thread has been moved from Switches, Hubs, Modems (Legacy ITRC forum) to Web and Unmanaged. -HP Forum Moderator

4 REPLIES
DSV12
Frequent Advisor
Solution

Re: 1810G-24 SNMP interface IDs

As I know for 1810G (both for 8 and for 24 ports models) port number 25 means port (interface) where own switch's MAC-address found. Ie if you make SNMP request with .iso.org.dod.internet.mgmt.mib-2.dot1dBridge.dot1dTp.dot1dTpFdbTable.dot1dTpFdbEntry.dot1dTpFdbPort.6.dd.dd.
dd.dd.dd.dd (.1.3.6.1.2.1.17.4.3.1.2.6.dd.dd.dd.dd.dd.dd (dd....dd - switch's MAC address in decimal) you'll get in answer port number == 25.

.6 after canonical request and before MAC is specific "magic" constant for 1810G.

So: numbers from 1 to 24 represent the real ports 1-24, 25 - "internal" port where switch's MAC "lives", 26,27... - trunk1, trunk2...

For other HP Procurve, familiars to me, switch's MAC "lives" on port with number 0.
Richard Scott_1
Frequent Advisor

Re: 1810G-24 SNMP interface IDs

That info is great.

Do you know if there is a resource giving this information on the various ProCurve models, as it seems to vary widely (for example, the 1800G has i/f #1 as the MAC/IP port, i/f 101-124 as the physical ports 1-24)?

Richard.
DSV12
Frequent Advisor

Re: 1810G-24 SNMP interface IDs

> Do you know if there is a resource giving
> this information on the various ProCurve
> models, as it seems to vary widely (for
> example, the 1800G has i/f #1 as the MAC/IP
> port, i/f 101-124 as the physical ports 1-24)?

No, I don't know such resources. I got this information empirically :)
Richard Scott_1
Frequent Advisor

Re: 1810G-24 SNMP interface IDs

Me too :(