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Community Member

Why always Logical slot/port = 14/1 is assigned to Etherchannel

Hi all,

On etherchannel i know when we create etherchannel  that link is logical link.

my question is why  always port channel  always start with   Logical slot/port   = 14/1   

Is it standard convestion that Port channel  always start with slot 14?

many thanks

mahesh

1 ACCEPTED SOLUTION

Accepted Solutions
Bronze

Re: Why always Logical slot/port = 14/1 is assigned to Etherc

Hi mahesh,

There is an internal logic to determine output port/ports in Catalyst6500 system

and some other products that is refered as Local Target Logic (LTL).

When you configure a port-channel and assign physical port/ports, a LTL will be allocated to

the port-channel and the physical port/ports will be programmed in the LTL.

Logical slot 14 is reservid for port-channels, 15 is reserved for primary supervisor and

16 is for secondary supervisor.

TAC or engineering team check them when doing some type of troubleshooting but

it is not important for most of users.

Regards,

Kimihito.

3 REPLIES
Bronze

Re: Why always Logical slot/port = 14/1 is assigned to Etherc

Hi mahesh,

There is an internal logic to determine output port/ports in Catalyst6500 system

and some other products that is refered as Local Target Logic (LTL).

When you configure a port-channel and assign physical port/ports, a LTL will be allocated to

the port-channel and the physical port/ports will be programmed in the LTL.

Logical slot 14 is reservid for port-channels, 15 is reserved for primary supervisor and

16 is for secondary supervisor.

TAC or engineering team check them when doing some type of troubleshooting but

it is not important for most of users.

Regards,

Kimihito.

Community Member

Re: Why always Logical slot/port = 14/1 is assigned to Etherc

Hi,

Many thanks for reply.

is there any command which we can use to see these Logical slots?

mahesh

Community Member

Re: Why always Logical slot/port = 14/1 is assigned to Etherc

Many thanks for explanation

mahesh

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