Hi,
OID .1.3.6.1.2.1.17.4.3.1.1 should return the CAM table entries of a given VLAN. This works on a 6500 series switch and on all 3500 I manage.
When I try this on a 4507, it only returns a few of the entries. To illustrate this:
Here is the MAC table of VLAN 102 as seen on the switch:
#sh mac-address-table vlan 102
Unicast Entries
vlan mac address type protocols port
-------+---------------+--------+---------------------+--------------------
102 0001.e69a.ae32 dynamic ip GigabitEthernet3/27
102 0002.a5d2.16b6 dynamic ip GigabitEthernet7/15
102 0004.dd0c.c03b dynamic ip,other GigabitEthernet3/25
102 0008.0216.2641 dynamic ip GigabitEthernet3/32
102 000b.cd30.1629 dynamic ip GigabitEthernet7/7
102 000c.cef1.2e3f static ip,ipx,assigned,other Switch
102 000e.7f61.d1ea dynamic ip GigabitEthernet4/6
102 000e.7f62.52bb dynamic ip GigabitEthernet7/8
102 000e.7fa6.2b5e dynamic ip GigabitEthernet7/27
102 0011.0aa4.0ba4 dynamic ip GigabitEthernet7/29
Here is the output of an snmpwalk from my monitoring host:
$ snmpwalk -v1 -c public@102 192.168.47.25 .1.3.6.1.2.1.17.4.3.1.1
SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.230.154.174.50 = Hex-STRING: 00 01 E6 9A AE 32
SNMPv2-SMI::mib-2.17.4.3.1.1.0.2.165.210.22.182 = Hex-STRING: 00 02 A5 D2 16 B6
SNMPv2-SMI::mib-2.17.4.3.1.1.0.4.221.12.192.59 = Hex-STRING: 00 04 DD 0C C0 3B
SNMPv2-SMI::mib-2.17.4.3.1.1.0.8.2.22.38.65 = Hex-STRING: 00 08 02 16 26 41
SNMPv2-SMI::mib-2.17.4.3.1.1.0.11.205.48.22.41 = Hex-STRING: 00 0B CD 30 16 29
As you can see, only the first 5 are returned.
IOS of the switch: IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-IS-M), Version 12.1(13)EW, EA
Has anyone seen this before and know how to solve this? (I want to get the CAM table via SNMP).
With kind regards,
Kevin
