Re: query on draft-ietf-iplpdn-frmib-dte-04.txt
John Shriver <jas@shiva.com> Tue, 09 May 1995 21:17 UTC
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From: John Shriver <jas@shiva.com>
Message-Id: <199505092117.RAA13327@shiva.shiva.com>
To: fred@cisco.com
CC: cbrown@wellfleet.com, carvalho@cisco.com, iplpdn@CNRI.Reston.VA.US
In-reply-to: <v02120c13abd576f55856@[171.69.128.114]> (fred@cisco.com)
Subject: Re: query on draft-ietf-iplpdn-frmib-dte-04.txt
I suppose the primary restriction of modeling a FR interface as one SNMP interface is that, for instance, in MIB-II you can't correlate which IP address is assigned to a particular DLCI (or DLCI's), since they include one ipAdEndIfIndex. (I presume the same applies to Novell's IPX MIB, someone borrowed my NLSP standard yesterday.) The similar restriction applies to ipRouteIfIndex. There is a loss of information. Now, maybe our conceptual problem (at Shiva) is that we didn't read the description below correctly: frCircuitIfIndex OBJECT-TYPE SYNTAX Index MAX-ACCESS read-only STATUS current DESCRIPTION "The ifIndex Value of the ifEntry this virtual circuit is layered onto." ::= { frCircuitEntry 1 } Does this mean that frCircuitIfIndex must be one of the values of frDlcmiIfIndex? Or can it be a whole row in the SNMP interface table, distinct from any value of frDlcmiIfIndex, and you figure out what physical interface it is by the RFC 1573 ifStackTable. Perhaps that is where we went astray reading the RFC & I-D here. If this is the case, two examples and some text in the RFC might make things much more obvious: Case 1: One ifEntry per FR interface: frDlcmiIfIndex ... 1 2 frCircuitIndex frCircuitDlci ... 1 88 1 201 1 222 2 72 2 99 (No need for ifStackTable.) Case 2: One ifEntry per FR circuit (or circuits): frDlcmiIfIndex ... 1 2 frCircuitIndex frCircuitDlci ... 10 88 11 201 12 222 12 223 12 224 20 72 21 99 ifStackHigherLayer ifStackLowerLayer 10 1 11 1 12 1 20 2 21 2
- query on draft-ietf-iplpdn-frmib-dte-04.txt John Shriver
- Re: query on draft-ietf-iplpdn-frmib-dte-04.txt Fred Baker
- Re: query on draft-ietf-iplpdn-frmib-dte-04.txt John Shriver