12

Port Trunking

Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3 Port Trunk Features and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-5 Trunk Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6 Menu: Viewing and Configuring a Static Trunk Group . . . . . . . . . 12-10 CLI: Viewing and Configuring Port Trunk Groups . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . .

12-19

Default Port Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-22

LACP Notes and Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12-23

Distributed Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-27

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-27

Distributed Trunking Interconnect Protocol (DTIP) . . . . . . . . . . . . 12-29

Configuring Distributed Trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-30

ISC Port Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-30

Distributed Trunking Port Configuration . . . . . . . . . . . . . . . . . . 12-30

Displaying Distributed Trunking Information . . . . . . . . . . . . . . . . . . 12-31

Maximum DT Trunks and Links Supported . . . . . . . . . . . . . . . . . . . . 12-32

Forwarding Traffic with Distributed Trunking and

Spanning Tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-32

Forwarding Unicast Traffic Upstream . . . . . . . . . . . . . . . . . . . . 12-32

Forwarding Broadcast, Multicast, and

Unknown Traffic Upstream . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-33

Forwarding Unicast Traffic Downstream (to the Server) . . . . 12-33

12-1