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tcam utilization

julio.aldana
Level 1
Level 1

Hello

I'd like to know what is "masks" in the output of show platform tcam utilization.

What does 784 mean? What effect has the number of mask in the amount of supported unicast direct routes?

I'm having trouble comparing the capacity of theese two switches, regarding unicast directly-connected routes.

I know the second switch has cpu utilization issues and ip unicast failed routes over 4096 arp entries. What would be the case for the first one?


Switch 1:

CAM Utilization for ASIC# 0                      Max            Used
                                             Masks/Values    Masks/values

 Unicast mac addresses:                        784/6272         12/26
 IPv4 IGMP groups + multicast routes:          144/1152          6/26
 IPv4 unicast directly-connected routes:       784/6272         12/26
 IPv4 unicast indirectly-connected routes:     272/2176          8/44
 IPv4 policy based routing aces:                 0/0             0/0
 IPv4 qos aces:                                528/528          18/18
 IPv4 security aces:                          1024/1024         27/27
 

switch1#sh sdm prefer default:

...

...

...

    number of unicast mac addresses:                               6K

    number of IPv4 IGMP groups + multicast routes:           1K

    number of IPv4 unicast routes:                                     12K

    number of directly-connected IPv4 hosts:                       6K

    number of indirect IPv4 routes:                                      6K

Switch 2:

CAM Utilization for ASIC# 0                                          Max                 Used

                                                                           Masks/Values    Masks/values

Unicast mac addresses:                                           8412/8412       3292/3292 

IPv4 IGMP groups + multicast routes:                        1120/1120           1/1    

IPv4 unicast directly-connected routes:                      4096/4096       3494/3494 

IPv4 unicast indirectly-connected routes:                    2048/2048         46/46   

IPv4 policy based routing aces:                                   442/442           12/12   

IPv4 qos aces:                                                           512/512           21/21   

IPv4 security aces:                                                     954/954           48/48

switxh2#sh sdm prefer default:

...

...

...

    number of unicast mac addresses:                               8K

    number of IPv4 IGMP groups + multicast routes:           1K

    number of IPv4 unicast routes:                                     10K

    number of directly-connected IPv4 hosts:                       8K

    number of indirect IPv4 routes:                                      2K

Thanks.

1 Reply 1

paolo bevilacqua
Hall of Fame
Hall of Fame

These are internal architecture details.

As long you have less than maximum, switch should work fine. So your problem is something else.

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