R0106-HP MSR Router Series MPLS Configuration Guide(V7)

389
Ste
p
Command Remarks
5. Enter cross-connect PW view.
peer ip-address pw-id pw-id
[ pw-class class-name |
tunnel-policy tunnel-policy-name ] *
N/A
6. Configure a backup LDP PW
and enter backup
cross-connect PW view.
backup-peer ip-address pw-id
pw-id [ pw-class class-name |
tunnel-policy tunnel-policy-name ] *
By default, no backup LDP PW is
configured.
7. Return to user view.
return N/A
8. Manually switch traffic to the
backup PW of the specified
PW.
l2vpn switchover peer ip-address
pw-id pw-id
N/A
Configuring interworking for a cross-connect
To configure MPLS L2VPN interworking, follow these restrictions and guidelines:
• When a CE connects to a PE through an Ethernet or VLAN link:
{ On the Ethernet network or in the VLAN, the CE and PE must be the only Layer 3 network
devices.
{ The PE responds to all ARP requests from the CE with its own MAC address.
{ On the PE's interface connected to the CE, use the default-nexthop command to configure the
default next hop address. This allows the PE to correctly encapsulate a link layer header for
packets destined for the CE.
− If you specify the unicast MAC address (the MAC address of the CE) or a broadcast MAC
address as the default next hop, the PE uses the MAC address as the destination address of
the outgoing packets.
− If you specify the IP address of the CE as the default next hop, the PE resolves the IP address
to a MAC address through gratuitous ARP, and then uses the resolved MAC address as the
destination MAC address of the outgoing packets.
{ On the CE's interface connected to the PE, configure the network type of the routing protocol as
P2P. For example, use the ospf network-type p2p command to configure the network type as
P2P.
{ After you disable interworking on the PE, you must use the reset arp command to clear the ARP
entries on the CE before the CE can learn new ARP entries.
• When a CE connects to a PE through a PPP link:
Perform one of the following operations on the PE:
{ Use the ppp ipcp ignore local-ip command to configure the PE to support IPCP negotiation
without IP address.
{ Use the ppp ipcp proxy command to specify the IP address for IPCP negotiation with the CE.
To configure interworking for a cross-connect:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter cross-connect group
view.
xconnect-group group-name N/A