what's the difference between FMANFP-6-IPV6ACCESSLOGP and IPV6_ACL-6-ACCESSLOGP?

[xidasd]

Most cisco documents say that the "IPV6_ACL-6-ACCESSLOGP" log will be logged as a result of ACL logging. But in my router, the logged message is "FMANFP-6-IPV6ACESSLOGP: R0/0: fman_fp_image: list~~" and also it does not record MAC address of source even if ACL is configured "log-input"

Does this difference depend  router version? My router is ISR 4321 and it seems that the router version used for cisco documents are 2911 router.

[Giuseppe Larosa · Accepted solution]

Hello @xidasd ,

you can use the message decoder tool

Message Decoder tool at: https:/​/​www.cisco.com/​cgi-bin/​Support/​Errordecoder/​index.cgi.

However, ISR 4000 series routers have an on board switching fabric that is missing on C2911 so that FMAN may mean fabric manager.

Hope to help

Giuseppe

[xidasd]

You means only way to view Source MAC address is to use decoder tool? Is there other way to display source MAC address on native log file?

[Giuseppe Larosa · Accepted solution]

Hello @xidasd ,

the tool explains only error messages.

The reason why you don't see MAC addresses even with log-input keyword may be a limitation on the device or feature.

However, if you are using the EUI-64 method to create the host portion of each device host IPv6 address the MAC address can be found using the EUI-64 operations in reverse order to get the 48 bit MAC address

Hope to help

Giuseppe