From: Vasu Dev Dasari (firstname.lastname@example.org)
Date: Wed Jun 26 2002 - 07:55:54 PDT
I am looking at netflow record packet format.
For Version 1 Flow Record Format
bytes (12-15) Input and output interface's SNMP
Similarly, for all other versions, (3, 5,8), input and
SNMP index is 2 bytes(16 bit) long. But, actually,
interface index is identified
by 32 bit integer according to RFC 2233 (IF-MIB). So,
if any implementation has
32 bit ifIndex representation then, the index that can
be put in flow record cannot
be a ifIndex, rather it could be some other 16 bit
index to identify local interface
for netflow purposes.
1. Has anyone come across this problem ??? Is there
any workaround ???
2. Is there any netflow MIB which goes like this,
given a 16 bit netflow index, return
32 bit ifIndex for the interface ???
3. Are there any plans of changing packet formats (by
owner, Cisco) to include 32 bit
ifIndex in place of 16 bits used in netflow record.
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