Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.112.0P1 - Page 982

network 192.168.20.0/29 area 0 passive-interface default no passive-interface vlan 20 While the passive-interface default command prevents all interfaces from establishing an OSPF neighborship, the no passive-interface vlan 20 command allows the interface for VLAN 20, the OSPF peering VLAN, to establish OSPF adjacencies. The following output displays that Dell-1 forms neighborship with Dell-2 and R1. Dell-2#show ip ospf neighbor Neighbor ID Pri State 172.17.1.1 1 FULL/DR 172.15.1.1 1 FULL/DROTHER Dead Time 00:00:31 00:00:33 Address 192.168.20.1 192.168.20.3 Interface Vl 20 Vl 20 Area 0 0 The following output displays the routes learned using OSPF. Dell-2 also learns the routes to the loopback addresses on R1 through OSPF. Dell-2#show ip route ospf Destination Gateway Dist/Metric ----------- O 2.2.2.2/24 via 192.168.20.3, Vl 20 110/2 O 3.3.3.2/24 via 192.168.20.3, Vl 20 110/2 O 4.4.4.2/24 via 192.168.20.3, Vl 20 110/2 O 172.15.1.1/32 via 192.168.20.3, Vl 20 110/2 O 172.16.1.2/32 via 192.168.20.1, Vl 20 110/1 Last Change ----------02:15:25 02:15:25 02:15:25 02:15:25 02:15:25 The following output displays the MAC address of all interfaces in the system. All interfaces, physical and virtual, have the same MAC address. This is the address used for peer routing. Dell#2#show interfaces | grep Hardware Hardware is DellEth, address is 90:b1:1c:f4:29:f3 Hardware is DellEth, address is 90:b1:1c:f4:29:f3 Hardware is DellEth, address is 90:b1:1c:f4:29:f3 Hardware is DellEth, address is 90:b1:1c:f4:29:f3 (Output truncated for brevity) Verify if peer routing has populated the CAM table with the correct information using the show cam mac command. Dell#2#sh cam mac stack-unit 0 port-set 0 VlanId Mac Address Region Interface 20 90:b1:1c:f4:29:f3 STATIC Po 10 20 00:0d:bc:6e:93:00 DYNAMIC Po 1 20 ff:ff:ff:ff:ff:ff STATIC 00001 900 90:b1:1c:f4:29:f3 STATIC Po 10 900 ff:ff:ff:ff:ff:ff STATIC 00001 800 90:b1:1c:f4:29:f3 STATIC Po 10 800 ff:ff:ff:ff:ff:ff STATIC 00001 0 ff:ff:ff:ff:ff:ff STATIC 00001 0 90:b1:1c:f4:2c:bd LOCAL_DA 00001 0 90:b1:1c:f4:29:f3 LOCAL_DA 00001 The MAC addresses of the VLAN interfaces of both VLT peers are registered in the L2 CAM as LOCAL_DA addresses. R1 Configuration Configuration on Interfaces R1#show run | find Loopback2 interface Loopback2 ip address 2.2.2.2 255.255.255.0 ! interface Loopback3 ip address 3.3.3.2 255.255.255.0 ! interface Loopback4 ip address 4.4.4.2 255.255.255.0 982 Virtual Link Trunking (VLT)