viii Contents
11.2.1 RFC 1213 (MIB II)......................................................................... 11-2
11.2.2 RFC 1493 (BRIDGE MIB)............................... ..............................11-3
11.2.3 RFC 1573 (INTERFACES EVOLUTION MIB) ..............................11-3
11.2.4 RFC 1643 (ETHERNET-LIKE MIB) ..............................................11 -3
11.2.5 RFC 1757 (RMON MIB)................................................................ 11-3
11.2.6 IEEE 802.1Q (Q MIB) ................................................................... 11-4
11.3 Enterasys Proprietary MIB Extensions.......................................................... 11-4
11.4 Compiling MIB Extensions: Enterasys Website ............................................11-4
ASPANNING TREE CONCEPTS
A.1 General ...........................................................................................................A-1
A.1.1 Spanning Tree Features .................................................................A-1
A.2 Spanning Tree Protocol in a Network .............................................................A-2
A.3 Spanning Tree Protocol Parameters............................................ ...................A-3
A.3.1 Spanning Tree Protocol Operation .................................................A-4
A.3.2 Communicating Between Bridges ...................................................A-4
A.3.3 Selecting a Root Bridge and Designated Bridges ...........................A-4
A.3.4 Selecting Designated Ports.......................................... ...................A-4
A.3.5 Handling Duplicate Paths...................................... ..........................A-5
A.3.6 Remapping Network Topology.................................................. ......A-5
BVIRTUAL LANs (VLANs)
B.1 VLANs and Frame Tagging.............................................................................B -1
B.2 VLAN Configuration ........................................................................................B-2
2.3 Forwarding Tagged/Untagged Frames ...........................................................B-3
B.4 Forwarding Traffic with Unknown VLAN Tags ................................................B-3
CCLASS OF SERVICE
DIP MULTICAST FILTERING