Concept Guide

switchport
no spanning-tree
vlt-peer-lag port-channel 50
no shutdown
Note that on the inter-domain link, the switchport command is enabled. On a VLTi link between VLT peers in a VLT domain, the
switchport command is not used.
VLAN 100 is used as the OSPF peering VLAN between Dell-1 and Dell-2.
interface Vlan 100
description OSPF Peering VLAN to Dell-2
ip address 10.10.100.1/30 ip ospf network point-to-point
no shutdown
VLAN 101 is used as the OSPF peering VLAN between the two VLT domains.
interface Vlan 101
description ospf peering vlan across VLTPG_Po50
ip address 10.10.101.1/30
tagged Port-channel 50 ip ospf network point-to-point
no shutdown
The following sequence of commands represent the OSPF conguration on Dell-1.
router ospf 1
router-id 4.4.4.4
network 10.10.100.0/30 area 0
network 10.10.101.0/30 area 0
The following output shows that Dell-2 and VLT domain 110 form OSPF neighborship with Dell-1.
Dell-1#show ip ospf neighbor
!
Neighbor ID Pri State Dead Time Address Interface Area
2.2.2.2 1 FULL/ - 00:00:39 10.10.100.2 Vl 100 0
3.3.3.3 1 FULL/ - 00:00:32 10.10.101.2 Vl 101 0
Dell-2 VLT Conguration
vlt domain 120
peer-link port-channel 120
back-up destination 10.1.1.2
primary-priority 24576
system-mac mac-address 02:01:e8:d8:93:e3
unit-id 1
peer-routing
proxy-gateway static
remote-mac-address 00:01:e8:8b:ff:4f
remote-mac-address 00:01:e8:d8:93:04
The MAC addresses, congured using the remote-mac-address command, belong to Dell-3 and Dell-4.
interface Vlan 100
description OSPF peering VLAN to Dell-1
ip address 10.10.100.2/30
ip ospf network point-to-point
no shutdown
The following is the OSPF conguration on Dell-2.
router ospf 1
router-id 2.2.2.2
network 10.10.100.0/30 area 0
1088
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