Blore,
The ASA will report interface statistics for each physical interface and vlan interface separately. If you perform a walk on the ifDescr attributes, you will see that the physical interfaces are separate from the named vlan interfaces. Make sure that your SNMP tool is configured to monitor the correct OID to correlate with the appropriate physical interface.
C:\Documents and Settings\Administrator>snmpwalk -v 2c -c public -On 192.168.2.1 ifDescr
.1.3.6.1.2.1.2.2.1.2.2 = STRING: Adaptive Security Appliance 'Internal-Data0/0'interface
.1.3.6.1.2.1.2.2.1.2.3 = STRING: Adaptive Security Appliance 'Ethernet0/0' interface
.1.3.6.1.2.1.2.2.1.2.4 = STRING: Adaptive Security Appliance 'Ethernet0/1' interface
.1.3.6.1.2.1.2.2.1.2.5 = STRING: Adaptive Security Appliance 'Ethernet0/2' interface
.1.3.6.1.2.1.2.2.1.2.6 = STRING: Adaptive Security Appliance 'Ethernet0/3' interface
.1.3.6.1.2.1.2.2.1.2.7 = STRING: Adaptive Security Appliance 'Ethernet0/4' interface
.1.3.6.1.2.1.2.2.1.2.8 = STRING: Adaptive Security Appliance 'Ethernet0/5' interface
.1.3.6.1.2.1.2.2.1.2.9 = STRING: Adaptive Security Appliance 'Ethernet0/6' interface
.1.3.6.1.2.1.2.2.1.2.10 = STRING: Adaptive Security Appliance 'Ethernet0/7' interface
.1.3.6.1.2.1.2.2.1.2.11 = STRING: Adaptive Security Appliance 'Internal-Data0/1' interface
.1.3.6.1.2.1.2.2.1.2.12 = STRING: Adaptive Security Appliance '_internal_loopback' interface
.1.3.6.1.2.1.2.2.1.2.13 = STRING: Adaptive Security Appliance 'Virtual254' interface
.1.3.6.1.2.1.2.2.1.2.14 = STRING: Adaptive Security Appliance 'inside' interface
.1.3.6.1.2.1.2.2.1.2.15 = STRING: Adaptive Security Appliance 'outside' interface
.1.3.6.1.2.1.2.2.1.2.16 = STRING: Adaptive Security Appliance 'Vlan300' interface
.1.3.6.1.2.1.2.2.1.2.17 = STRING: Adaptive Security Appliance 'labnet' interface
.1.3.6.1.2.1.2.2.1.2.18 = STRING: Adaptive Security Appliance 'fakeif' interface
I hope this helps.
Thanks,
Brendan
