Users Guide

Supported Features
Because PE interfaces only support Layer 2 mode, you cannot configure an IP address configuration and Layer 3 protocol features.
NOTE: The only Layer 3 feature supported on PE ports is L3 VLANs
A port extender supports the following L2 protocols on PE ports:
802.1x
BPDU guard
LACP
LAGs
LLDP
Loop detection and MAC Learning Limit
A port extender does not support:
DCB
FEFD
GVRP
FRRP
Sticky MAC
STP Edge port support on PE interfaces
VLAN stacking
VLT
Dual Homing
Dual homing provides support to manage and control the PEs from both the primary and the secondary chassis in a VLT setup. The C9010
switch supports dual homing using port extenders. You can also stack the port extenders in a dual homing setup. The following figure
shows PE dual homing, where the port extenders are dual-homed to a pair of C9010 switches.
Figure 107. Dual Homing — Sample Topology
Port Extenders (PEs)
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