18-5
Ethernet Card Software Feature and Configuration Guide, R7.2
January 2009
Chapter 18 Configuring Ethernet over MPLS
EoMPLS Configuration Guidelines
• EoMPLS Configuration on PE-CLE SPR Interface, page 18-8 (Req uired)
• Bridge Group Configuration on MPLS Cloud-facing Port, page 18-8 (Req uired)
• Setting the Priority of Packets with the EXP, page 18-9
EoMPLS Configuration Guidelines
These are the guidelines for configuring EoMPLS:
• Loopback addresses are used to specify the peer ML-Series card’s IP address.
• LDP configuration is required. The default Tag Distribution Protocol (TDP) will not work.
• EoMPLS uses LDP targeted session between the ML-Series cards to create the EoMPLS VCs.
• The MPLS backbone must use an Interior Gateway Protocol (IGP) routing protocol, for example,
Intermediate System-to-Intermediate System (IS-IS) Protocol or Open Shortest Path First (OSPF).
• Tag switching of IP packets must be enabled on the SPR interface for the PE-CLE ML-Series card.
VC Type 4 Configuration on PE-CLE Port
The customer-facing FastEthernet or GigabitEthernet port must be provisio ned with EoMPLS and a
VC type 4 or type 5. Interface GigE 0.1 on card A and card C plays the VC type 4 role in Figur e 18-2 on
page 18-10. For more information on the role of a VC type 4, see the “Understanding EoMPLS” section
on page 18-1.
To provision a VC type 4, which transport IEEE 802.1Q VLAN packets between two PE-CLE ML-Series
cards, perform the following procedure on the customer facing port, beginning in global configuration
mode:
Command Purpose
Step 1 Router(config)# mpls label protocol ldp Specifies LDP as the label distribution protocol.
LDP must be specified. The ML-Series card does not
operate EoMPLS with the default TDP as the label
distribution protocol.
Step 2 Router(config)# interface loopback0 Enters loopback interface configuration mode.
Step 3 Router(config-if)# ip address
ip-address
255.255.255.255
Assigns an IP address to the loopback interface. This
loopback IP addresses is used to identify the peer in the
EoMPLS point-to-point session.
No subnet mask is needed.
Step 4 Router(config)# interface {GigabitEthernet |
FastEthernet} interface-number
.
sub-interface-
number
Specifies the Ethernet subinterface for the imposition
interface. Make sure the subinterface on the adjoining
CE equipment is on the same VLAN as this subinterface.
Step 5 Router(config-subif)# no ip address Disables the IP address if an IP address is assigned.
Step 6 Router(config-subif)# encapsulation dot1Q
vlan-id
Enables the subinterface to accept 802.1q VLAN
packets. Make sure the VLAN ID is the same as the
VLAN ID on the adjoining CE equipment.