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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