Enabling Mpls - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Configure
address mapping
Allocate VC for the interface
For FR, you can use the main interface or subinterface to connect the CE interface.
IV. Configuring ATM interface
For a VLAN subinterface, you should perform the following configuration in the
interface view.
Table 4-3 Configure VLAN subinterface
Configure encapsulation type and associated
VLAN ID for Ethernet
subinterface
Caution:
L2VPN support these types of interfaces: Ethernet interface/subinterface, serial
interface and ATM interface/subinterface.
For VLAN, only the Ethernet subinterface can server as CE interface. If a main Ethernet
interface is used as CE interface, its encapsulation type is Ethernet, not VLAN, by
default.
In L2VPN, each subinterface can only be configured with one VC. If multiple VCs have
been configured, only the first one is valid.
Since L2VPN cannot fragment large packets on a P router, you must configure an MTU
less than 1450 on the CE to avoid errors caused by incorrect fragmentation on a P
router.

4.2.2 Enabling MPLS

MPLS underlies MPLS L2VPN. Therefore, you should enable MPLS before configuring
the MPLS L2VPN parameters.
Perform the following configuration in the system view.
Operation
static or dynamic
Operation
or Gigabit Ethernet
3Com Corporation
4-7
Chapter 4 MPLS L2VPN Configuration
Command
fr map ip { protocol-address [ ip-mask ] |
default } dlci [ broadcast ] [ nonstandard
FR
| ietf ]
fr inarp [ ip ] [ dlci ]
fr dlci dlci
vlan-type dot1q vid vid
Command