Understanding Layer 2 Protocol Tunneling On Ex Series Switches; Layer 2 Protocols Supported By L2Pt On Ex Series Switches - Juniper JUNOS OS 10.3 - SOFTWARE Manual

Understanding Layer 2 Protocol Tunneling on EX Series Switches

Layer 2 Protocols Supported by L2PT on EX Series Switches

Copyright © 2010, Juniper Networks, Inc.
Layer 2 protocol tunneling (L2PT) allows you to send Layer 2 protocol data units (PDUs)
across a service provider network and deliver them to Juniper Networks EX Series Ethernet
Switches that are not part of the local broadcast domain. This feature is useful when
you want to run Layer 2 protocols on a network that includes switches located at remote
sites that are connected across a service provider network.
This topic includes:
Layer 2 Protocols Supported by L2PT on EX Series Switches on page 1299
How L2PT Works on page 1300
L2PT Basics on EX Series Switches on page 1300
L2PT on EX Series switches supports the following Layer 2 protocols:
802.1X authentication
802.3ah Operation, Administration, and Maintenance (OAM) link fault management
(LFM)
NOTE: If you enable L2PT for untagged OAM LFM packets, do not configure
LFM on the corresponding access interface.
Cisco Discovery Protocol (CDP)
Ethernet local management interface (E-LMI)
GARP VLAN Registration Protocol (GVRP)
Link Aggregation Control Protocol (LACP)
NOTE: If you enable L2PT for untagged LACP packets, do not configure
LACP on the corresponding access interface.
Link Layer Discovery Protocol (LLDP)
Multiple MAC Registration Protocol (MMRP)
Multiple VLAN Registration Protocol (MVRP)
Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple
Spanning Tree Protocol (MSTP)
VLAN Spanning Tree Protocol (VSTP)
VLAN Trunking Protocol (VTP)
Chapter 57: Bridging and VLANs—Overview
1299