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

mahesh18 · ‎09-29-2010

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

kitanaka · ‎09-29-2010

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.

kitanaka · ‎09-29-2010

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.

mahesh18 · ‎09-29-2010

Hi,

Many thanks for reply.

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

mahesh

mahesh18 · ‎09-29-2010

Many thanks for explanation

mahesh