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vlt domain domain-id
2
Enable peer-routing.
VLT DOMAIN mode
peer-routing
3
Configure the multicast peer-routing timeout.
VLT DOMAIN mode
multicast peer-routing—timeout value
value: Specify a value (in seconds) from 1 to 1200.
4
Configure a PIM-SM compatible VLT node as a designated router (DR). For more information, refer to
Configuring a Designated
5
Configure a PIM-enabled external neighboring router as a rendezvous point (RP). For more information,
refer to
Configuring a Static Rendezvous
6
Configure the VLT VLAN routing metrics to prefer VLT VLAN interfaces over non-VLT VLAN interfaces.
For more information, refer to
7
Configure symmetrical Layer 2 and Layer 3 configurations on both VLT peers for any spanned VLAN.
Non-VLT ARP Sync
Synchronization for non-ARP routing table entries is supported on the switch.
ARP entries (including ND entries) learned on other ports are synced with the VLT peer to support station
move scenarios.
NOTE:
ARP entries learned on non-VLT, non-spanned VLANs are not synced with VLT peers.
RSTP Configuration
RSTP is supported in a VLT domain.
Before you configure VLT on peer switches, configure RSTP in the network. RSTP is required for initial loop
prevention during the VLT startup phase. You may also use RSTP for loop prevention in the network outside
of the VLT port channel. For information about how to configure RSTP,
Run RSTP on both VLT peer switches. The primary VLT peer controls the RSTP states, such as forwarding and
blocking, on both the primary and secondary peers. Dell Networking recommends configuring the primary
VLT peer as the RSTP primary root device and configuring the secondary VLT peer as the RSTP secondary
root device.
BPDUs use the MAC address of the primary VLT peer as the RSTP bridge ID in the designated bridge ID field.
The primary VLT peer sends these BPDUs on VLT interfaces connected to access devices. The MAC address
for a VLT domain is automatically selected on the peer switches when you create the domain (refer to
Enabling VLT and Creating a VLT
Router.
Point.
Classify
Traffic.
Domain).
Rapid Spanning Tree Protocol
Virtual Link Trunking (VLT)
(RSTP).
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Troubleshooting
