monitoring TCAM usage on C6K

[STUART KENDRICK]

hi,

is there an SNMP way to monitor IPv4 TCAM usage on a C6K? i can type 'sh platform hardware cap pfc | begin L3 Forwarding Resources' and see how close I am to overflowing my TCAM ...

but i'd rather poll some OID intermittently and shriek when the percent of free resources drops below some threshold i set

i've poked through CISCO-SWITCH-ENGINE-MIB.my, and i'm pretty sure that answer to this is 'no' ... now i'm looking for confirmation

--sk

stuart kendrick

fhcrc

[#2]

We can monitor IPv4 TCAM usage on a C6K by SNMP.

Refer to the bug CSCeb12655

http://www.cisco.com/en/US/products/hw/switches/ps708/products_white_paper09186a00800c9470.shtml

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_q_and_a_item09186a00800b69ac.shtml

[STUART KENDRICK]

hmm, i'm skeptical

i see that the text describing the bug suggests that this feature is available

however

i don't see any mention of IPv4 TCAM resources in the first URL you list. i don't see any mention of TCAM or FIB in the second URL you list

furthermore, here is snmpwalk output on a Sup720-3B attempting to carry a full Internet route feed ... and overflowing its IPv4 TCAM resources in the process

guru> snmpbulkwalk -c public mmz-b-rtr cseTcamResourceUsed

cseTcamResourceUsed.1021.aclStorageMask = Gauge32: 124

cseTcamResourceUsed.1021.aclStorageValue = Gauge32: 169

cseTcamResourceUsed.1021.qosStorageMask = Gauge32: 22

cseTcamResourceUsed.1021.qosStorageValue = Gauge32: 22

cseTcamResourceUsed.1021.l4PortOperator = Gauge32: 0

cseTcamResourceUsed.1021.interfaceMapping = Gauge32: 10

cseTcamResourceUsed.1021.ingressInterfaceMapping = Gauge32: 8

cseTcamResourceUsed.1021.egressInterfaceMapping = Gauge32: 2

guru> snmpbulkwalk -c public mmz-b-rtr cseTcamResourceTotal

cseTcamResourceTotal.1021.aclStorageMask = Gauge32: 4096

cseTcamResourceTotal.1021.aclStorageValue = Gauge32: 32768

cseTcamResourceTotal.1021.qosStorageMask = Gauge32: 4096

cseTcamResourceTotal.1021.qosStorageValue = Gauge32: 32768

cseTcamResourceTotal.1021.l4PortOperator = Gauge32: 128

cseTcamResourceTotal.1021.interfaceMapping = Gauge32: 4096

cseTcamResourceTotal.1021.ingressInterfaceMapping = Gauge32: 4096

cseTcamResourceTotal.1021.egressInterfaceMapping = Gauge32: 4096

guru>

i see QoS and ACL TCAM parameters ... but no IPv4 TCAM parameters

what am i missing?

--sk