On 07/08/2011 06:40 PM, Tom Ammon wrote:
Hi all,
I'm trying to get the IPv6 ND table via SNMP from my 6506E. When I
tried to snmpwalk it, here's what I got:
[root@marchingmenfs ~]# snmpwalk -v2c -c xxxxxxxxxxxxxx
inscc-rtr-core-a1-2.redhorn ip.ipNetToPhysicalTable
IP-MIB::ipNetToPhysicalTable = No Such Object available on this agent
at this OID
[root@marchingmenfs ~]# snmpwalk -v2c -c xxxxxxxxxxxxxx
inscc-rtr-core-a1-2.redhorn 1.3.6.1.2.1.4.35
IP-MIB::ipNetToPhysicalTable = No Such Object available on this agent
at this OID
Try:
CISCO-IETF-IP-MIB::cInetNetToMediaTable
The RFC table isn't in 6500 IOS yet AIUI.
Couple of points:
1. Just like the IPv4 ARP table, walking this table is sloowwww once
you exceed a few thousand entries, as the puny CPU on the sup720 has to
numerically sort the OIDs. We use an "expect" script to get the v4/v6
neighbours on our busier routers, as the CLI output comes back in
internal/unsorted order, very much faster.
2. You get "no such oid" if the table is empty, which I find happens a
lot if there's virtually no IPv6 traffic! Not such a big problem these
days, since Youtube content servers have AAAA record, but make sure
there's something in the neighbour table when you're testing.
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