Concept Guide

Standalone System
You can connect a standalone system to a system that already has a PE to make it dual homed. In the following illustration, PE 1
is connected to System A and System B is a standalone.
Figure 111. Standalone System and System with PE — Before setting up Dual Homing
To convert the above system into a dual homing setup, perform the following:
1. Repeat the steps 2 to 7 from Systems with Port Extender.
2. Change the uplink port connections of the PE, so that the uplink ports are connected to each of the VLT peers. In the above
example, the link connected to Te 0/1 in System A is disconnected and connected to Te 1/4 in System B.
3. Remove the disconnected interface (Te 0/1) from the configuration mode of PE 1 in System A. The configuration would be
already available in System A and needs to be removed.
PE CONFIGURATION (BATCH mode)
no cascade interface interface slot/port
Dell(conf-b-pe-1)# no cascade interface TenGigabitEthernet 0/1
4. Configure the cascade interface of the System B through the batch mode of System A and commit the configuration.
PE CONFIGURATION (BATCH mode)
cascade interface interface slot/port peer
Dell(conf-b-pe-1)# cascade interface TenGigabitEthernet 1/4 peer
Once the cascade interfaces are configured, the PE starts functioning in a dual homing setup as shown in the following
diagram:
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Port Extenders (PEs)