Administrator Guide

• 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 108. Dual Homing — Sample Topology
In the preceding illustration, Port Extender PE 1 is connected to System A and Port Extender PE 2 is connected to System B. PE 3 is
connected to both A and B. When the systems A and B are connected to each other and made as VLT peers, you can configure PE 1, PE
2, and PE 3 from either of the systems.
System A is the primary controlling bridge and System B is the secondary. When the primary system goes down, the secondary system
acts as primary and controls the PEs. The common PE configurations are synchronized between the systems when configured using the
Configuration Terminal Batch mode.
NOTE:
When multiple PEs are connected in a dual homing setup, ensure that each PE has an unique ID so that the IDs do
not overlap during the configuration.
Configuration Terminal Batch Mode
The C9010 platform with Dell Networking OS 9.10(0.0) supports the Configuration Terminal Batch mode. You should perform the
common PE configurations using this mode.
To enter Configuration Terminal Batch mode:
1. Verify that you are logged in to EXEC Privilege mode.
2. Enter the configure terminal batch command. The prompt changes to include (conf-b).
You can return to EXEC mode by using the exit command.
Setting up Dual Homing
You can setup dual homing when:
1. There are two systems (CBs) and both have PEs connected to them. You can physically connect the CBs and then configure them as
VLT peers to convert the system into dual homing setup. Refer to Systems with Port Extender.
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Port Extenders (PEs)