Cisco Catalyst 3750 Software Configuration Guide

Contents
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Catalyst 3750 Metro Switch Software Configuration Guide
78-15870-01
CHAPTER 13 Configuring IEEE 802.1Q and Layer 2 Protocol Tunneling 13-1
Understanding 802.1Q Tunneling 13-2
Configuring 802.1Q Tunneling 13-4
Default 802.1Q Tunneling Configuration 13-4
802.1Q Tunneling Configuration Guidelines 13-4
Native VLANs 13-4
System MTU 13-5
802.1Q Tunneling and Other Features 13-6
Configuring an 802.1Q Tunneling Port 13-6
Configuring VLAN Mapping 13-7
Default VLAN Mapping Configuration 13-8
Mapping Customer VLANs to Service-Provider VLANs 13-8
Mapping Customer 802.1Q Traffic with VLAN IDs 13-9
Understanding Layer 2 Protocol Tunneling 13-10
Configuring Layer 2 Protocol Tunneling 13-12
Default Layer 2 Protocol Tunneling Configuration 13-13
Layer 2 Protocol Tunneling Configuration Guidelines 13-13
Configuring Layer 2 Tunneling 13-14
Monitoring and Maintaining Tunneling and Mapping Status 13-16
CHAPTER 14 Configuring STP 14-1
Understanding Spanning-Tree Features 14-1
STP Overview 14-2
Spanning-Tree Topology and BPDUs 14-3
Bridge ID, Switch Priority, and Extended System ID 14-4
Spanning-Tree Interface States 14-4
Blocking State 14-5
Listening State 14-6
Learning State 14-6
Forwarding State 14-6
Disabled State 14-7
How a Switch or Port Becomes the Root Switch or Root Port 14-7
Spanning Tree and Redundant Connectivity 14-8
Spanning-Tree Address Management 14-8
Accelerated Aging to Retain Connectivity 14-8
Spanning-Tree Modes and Protocols 14-9
Supported Spanning-Tree Instances 14-10
Spanning-Tree Interoperability and Backward Compatibility 14-10
STP and IEEE 802.1Q Trunks 14-10

Cisco Catalyst 3750 Specifications

General

Device Type	Switch
Switching Capacity	32 Gbps
Forwarding Rate	38.7 Mpps
Stacking Bandwidth	32 Gbps
RAM	128 MB
Jumbo Frame Support	Yes
Switch Type	Managed
Model	Catalyst 3750 Series
Uplink Interfaces	SFP
Form Factor	Rack-mountable
MAC Address Table Size	12, 000 entries
Routing Protocol	RIP, OSPF, EIGRP
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Layer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)	PoE
Operating Temperature	-5 - 45 °C
Operating Humidity	10% to 85% non-condensing