270
which PE devices
belong
to VPN instance
a
. VLAN-interface 2 and Loopback 1 belong to the public
network instance.
•
PE 2: VLAN-interface 2, VLAN-interface 3, Loopback 1, and Loopback 2 belong
to the public network instance.
•
PE 3: VLAN-interface 3, VLAN-interface 4, Loopback 1, and Loopback 2 belong
to the public network instance.
•
PE 4: VLAN-interface 13 belongs to VPN instance
a
. VLAN-interface 14 belongs
to VPN instance
b
. VLAN-interface 4 and Loopback 1 belong to the public
network instance.
Unicast routing
protocols and
MPLS
•
Configure OSPF separately in AS 100 and AS 200, and configure OSPF
between the PEs and CEs.
•
Establish BGP peer connections between PE 1, PE 2, PE 3, and PE 4 on their
respective Loopback 1.
•
Configure MPLS separately in AS 100 and AS 200.
IP multicast routing
•
Enable IP multicast routing on the public network on PE 1, PE 2, PE 3, and PE 4.
•
Enable IP multicast routing for VPN instance
a
on PE 1 and PE 4.
•
Enable IP multicast routing for VPN instance
b
on PE 1 and PE 4.
•
Enable IP multicast routing on CE a1, CE a2, CE b1, and CE b2.
IGMPv2
•
Enable IGMPv2 on VLAN-interface 30 of CE a2.
•
Enable IGMPv2 on VLAN-interface 40 of CE b2.
PIM-SM
Enable PIM-SM on the public network and for VPN instances
a
and
b
:
•
Enable PIM-SM on all public network interfaces of PE 2 and PE 3.
•
Enable PIM-SM on all public and private network interfaces of PE 1 and PE 4.
•
Enable PIM-SM on all interfaces that do not have attached receiver hosts of CE
a1, CE a2, CE b1, and CE b2.
•
Configure Loopback 2 of PE 2 and PE 3 as a C-BSR and a C-RP for their own AS
to provide services for all multicast groups.
•
Configure Loopback 0 of CE a1 as a C-BSR and a C-RP for VPN instance
a
to
provide services for all multicast groups.
•
Configure Loopback 0 of CE b1 as a C-BSR and a C-RP for VPN instance
b
to
provide services for all multicast groups.
MSDP
Establish an MSDP peering relationship between PE 2 and PE 3 on their Loopback 1.