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Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

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VLAN Scenario

In another scenario, to connect to the LAN, VRF-1, VRF-2, and VRF-3 use a single physical interface with multiple tagged VLANs (instead of separate physical interfaces).

In this case, you configure three VLANs: VLAN-100, VLAN-200, and VLAN-300. Each VLAN is a member of one VRF. A physical interface ( ) attaches to the LAN and is configured as a tagged interface in VLAN-100, VLAN-200, and VLAN-300. The rest of this example is similar to the non-VLAN scenario.

This VLAN scenario often occurs in a service-provider network in which you configure VLAN tags for traffic from multiple customers on customer-premises equipment (CPE), and separate VRF instances associated with each VLAN are configured on the provider edge (PE) router in the point-of-presence (POP).

VRRP in VRF: Switch-1 VLAN Configuration

Switch-1
S1(conf)#ip vrf VRF-1 1
!
S1(conf)#ip vrf VRF-2 2
!
S1(conf)#ip vrf VRF-3 3
!
S1(conf)#interface GigabitEthernet 1/1
S1(conf-if-gi-1/1)#no ip address
S1(conf-if-gi-1/1)#switchport
S1(conf-if-gi-1/1)#no shutdown
!
S1(conf-if-gi-1/1)#interface vlan 100
S1(conf-if-vl-100)#ip vrf forwarding VRF-1
S1(conf-if-vl-100)#ip address 10.10.1.5/24
S1(conf-if-vl-100)#tagged Gigabitethernet 1/1
S1(conf-if-vl-100)#vrrp-group 11
% Info: The VRID used by the VRRP group 11 in VRF 1 will be 177.
S1(conf-if-vl-100-vrid-101)#priority 100
S1(conf-if-vl-100-vrid-101)#virtual-address 10.10.1.2
S1(conf-if-vl-100)#no shutdown
!
S1(conf-if-gi-1/1)#interface vlan 200
S1(conf-if-vl-200)#ip vrf forwarding VRF-2
S1(conf-if-vl-200)#ip address 10.10.1.6/24
S1(conf-if-vl-200)#tagged Gigabitethernet 1/1
S1(conf-if-vl-200)#vrrp-group 11
% Info: The VRID used by the VRRP group 11 in VRF 2 will be 178.
S1(conf-if-vl-200-vrid-101)#priority 100
S1(conf-if-vl-200-vrid-101)#virtual-address 10.10.1.2
S1(conf-if-vl-200)#no shutdown
!
S1(conf-if-gi-1/1)#interface vlan 300
S1(conf-if-vl-300)#ip vrf forwarding VRF-3
S1(conf-if-vl-300)#ip address 20.1.1.5/24
S1(conf-if-vl-300)#tagged Gigabitethernet 1/1
S1(conf-if-vl-300)#vrrp-group 15
% Info: The VRID used by the VRRP group 15 in VRF 3 will be 243.
S1(conf-if-vl-300-vrid-101)#priority 255
S1(conf-if-vl-300-vrid-101)#virtual-address 20.1.1.5
S1(conf-if-vl-300)#no shutdown

DellEMC#show vrrp vrf vrf1 vlan 400
------------------
Vlan 400, IPv4 VRID: 1, Version: 2, Net: 10.1.1.1
VRF: 1 vrf1
State: Master, Priority: 100, Master: 10.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 278, Gratuitous ARP sent: 1
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
10.1.1.100
Authentication: (none)

DellEMC#show vrrp vrf vrf2 port-channel 1
------------------
Port-channel 1, IPv4 VRID: 1, Version: 2, Net: 10.1.1.1
VRF: 2 vrf2
State: Master, Priority: 100, Master: 10.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 419, Gratuitous ARP sent: 1
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
10.1.1.100
Authentication: (none)

VRRP in VRF: Switch-2 VLAN Configuration

Switch-2
S2(conf)#ip vrf VRF-1 1
!
S2(conf)#ip vrf VRF-2 2
!
S2(conf)#ip vrf VRF-3 3
!
S2(conf)#interface GigabitEthernet 1/1
S2(conf-if-gi-1/1)#no ip address
S2(conf-if-gi-1/1)#switchport
S2(conf-if-gi-1/1)#no shutdown
!
S2(conf-if-gi-1/1)#interface vlan 100
S2(conf-if-vl-100)#ip vrf forwarding VRF-1
S2(conf-if-vl-100)#ip address 10.10.1.2/24
S2(conf-if-vl-100)#tagged Gigabitethernet 1/1
S2(conf-if-vl-100)#vrrp-group 11
% Info: The VRID used by the VRRP group 11 in VRF 1 will be 177.
S2(conf-if-vl-100-vrid-101)#priority 255
S2(conf-if-vl-100-vrid-101)#virtual-address 10.10.1.2
S2(conf-if-vl-100)#no shutdown
!
S2(conf-if-gi-1/1)#interface vlan 200
S2(conf-if-vl-200)#ip vrf forwarding VRF-2
S2(conf-if-vl-200)#ip address 10.10.1.2/24
S2(conf-if-vl-200)#tagged Gigabitethernet 1/1
S2(conf-if-vl-200)#vrrp-group 11
% Info: The VRID used by the VRRP group 11 in VRF 2 will be 178.
S2(conf-if-vl-200-vrid-101)#priority 255
S2(conf-if-vl-200-vrid-101)#virtual-address 10.10.1.2
S2(conf-if-vl-200)#no shutdown
!
S2(conf-if-gi-1/1)#interface vlan 300
S2(conf-if-vl-300)#ip vrf forwarding VRF-3
S2(conf-if-vl-300)#ip address 20.1.1.6/24
S2(conf-if-vl-300)#tagged Gigabitethernet 1/1
S2(conf-if-vl-300)#vrrp-group 15
% Info: The VRID used by the VRRP group 15 in VRF 3 will be 243.
S2(conf-if-vl-300-vrid-101)#priority 100
S2(conf-if-vl-300-vrid-101)#virtual-address 20.1.1.5
S2(conf-if-vl-300)#no shutdown

DellEMC#show vrrp vrf vrf1 vlan 400
------------------
Vlan 400, IPv4 VRID: 1, Version: 2, Net: 10.1.1.1
VRF: 1 vrf1
State: Master, Priority: 100, Master: 10.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 278, Gratuitous ARP sent: 1
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
10.1.1.100
Authentication: (none)

Vlan 400, IPv4 VRID: 10, Version: 2, Net: 20.1.1.2
VRF: 1 vrf1
State: Backup, Priority: 90, Master: 20.1.1.1
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 377, Bad pkts rcvd: 0, Adv sent: 0, Gratuitous ARP sent: 0
Virtual MAC address:
00:00:5e:00:01:0a
Virtual IP address:
20.1.1.100
Authentication: (none)

DellEMC#show vrrp vrf vrf2 port-channel 1
------------------
Port-channel 1, IPv4 VRID: 1, Version: 2, Net: 10.1.1.1
VRF: 2 vrf2
State: Master, Priority: 100, Master: 10.1.1.1 (local)
Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 sec
Adv rcvd: 0, Bad pkts rcvd: 0, Adv sent: 419, Gratuitous ARP sent: 1
Virtual MAC address:
00:00:5e:00:01:01
Virtual IP address:
10.1.1.100
Authentication: (none)

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