Configuring Dual-Home Links Dual-Home Link Active-Active
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 10-8
Dual-Home Link Active-Active Example
The figure below shows two ports (1/1/10 and 1/1/12) that serve as link A and link B for a DHL session
configured on the Edge switch. Both ports are associated with VLANs 1-10, where VLAN 1 is the default
VLAN for both ports. The odd numbered VLANs (1, 3, 5, 7, 9) are mapped to link A and the even
numbered VLANs (2, 4, 6, 8, 10) are mapped to link B. Spanning Tree is disabled on both ports.
Both DHL links are active and provide connectivity to the Core switches for the VLANs to which each
link is mapped. If one link fails or is brought down, the VLANs mapped to the failed link are switched
over to the remaining active link to maintain connectivity for those VLANs. For example, if link A goes
down, VLANs 1, 3, 5, 7, and 9 are switch over and carried on link B.
Dual-Home Link Active-Active Example
Follow the steps below to configure this example DHL configuration.
Edge Switch:
1 Create VLANs 2-10.
-> vlan 2-10
2 Configure 802.1q tagging on VLANs 2-10 for port 1/1/10. Because VLAN 1 is the default VLAN for
port 1/1/10, there is no need to tag VLAN 1.
-> vlan 2-10 members port 1/1/10 tagged
3 Configure 802.1q tagging on the VLANs 2-10 for port 1/1/12. Because VLAN 1 is the default VLAN
for port 1/1/12, there is no need to tag VLAN 1.
-> vlan 2-10 members port 1/1/12 tagged
4 Configure a session ID and an optional name for the DHL session.
-> dhl 1 name dhl_session1
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