12

Port Trunking

Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2

Port Status and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-2

Port Connections and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Link Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Trunk Group Boundary Requirement with IP Routing Enabled

on the Series 2800 Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Trunk Group Boundary Requirement for the Series 4100gl Switch 10/100/1000 Module (J4908A) . . . . . . . . . . . . . . . . . . . . . . 12-4

Port Trunk Options and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5

Trunk Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5

Menu: Viewing and Configuring a Static Trunk Group . . . . . . . . . . . 12-10

CLI: Viewing and Configuring a Static or Dynamic

Port Trunk Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-12

Using the CLI To View Port Trunks . . . . . . . . . . . . . . . . . . . . . . . 12-12

Using the CLI To Configure a Static or Dynamic Trunk Group 12-15

Web: Viewing Existing Port Trunk Groups . . . . . . . . . . . . . . . . . . . . 12-18

Trunk Group Operation Using LACP . . . . . . . . . . . . . . . . . . . . . . . . . 12-18

Default Port Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-21

LACP Notes and Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-23

Trunk Group Operation Using the “Trunk” Option . . . . . . . . . . . . . . 12-25

Trunk Operation Using the “FEC” Option . . . . . . . . . . . . . . . . . . . . . 12-25

How the Switch Lists Trunk Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-26

Outbound Traffic Distribution Across Trunked Links . . . . . . . . . . . 12-26

12-1