Cisco 7609 User Manual

CHAPTER
15-1
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
78-14064-04
15
Configuring STP and IEEE 802.1s MST
This chapter describes how to configure the Spanning Tree Protocol (STP) and the IEEE 802.1s Multiple
Spanning Tree (MST) protocol on Cisco 7600 series routers.
Note For complete syntax and usage information for the commands used in this chapter, refer to the
Cisco 7600 Series Router Cisco IOS Command Reference publication.
This chapter consists of these sections:
• Understanding How STP Works, page 15-2
• Understanding How IEEE 802.1w RSTP Works, page 15-13
• Understanding How IEEE 802.1s MST Works, page 15-14
• Default STP Configuration, page 15-21
• STP and MST Configuration Guidelines, page 15-21
• Configuring STP, page 15-22
• Configuring IEEE 802.1s MST, page 15-34
Note • For information on configuring the PortFast, UplinkFast, and BackboneFast STP enhancements, see
Chapter 16, “Configuring Optional STP Features.”
• Release 12.1(13)E and later releases support IEEE 802.1s MST and IEEE 802.1w, rapid
reconfiguration of spanning tree.

Cisco 7609 Specifications

General

Chassis Slots	9
Switch Fabric Capacity	720 Gbps
Power Supply Options	AC or DC
Product Type	Router
Form Factor	Rack-mountable
Supported Line Cards	Various Cisco 7600 Series line cards
Operating System	Cisco IOS
Management	CLI, SNMP
Forwarding Performance	400 Mpps
Maximum Power Consumption	4000 Watts
Redundancy	Yes
Interfaces/Ports	Various, depending on line cards installed