help

[upendra07]

Dear

I see configution of l3.One line is this

"switchport trunk encapsulation dot1q"

can you tell me why it's require and what is the line meaning.

[Gerald Vogt]

See http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_s7.html#wp1014809

It sets the encapsulation used for trunking to 802.1q (instead of isl, if supported). It is only required if the port on which this is configured can be configured for something else then 802.1q.