421
Step Command
Remarks
view. [
pw-class
class-name
|
tunnel-policy
tunnel-policy-name
] *
7.
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.
8.
Return to user view.
return
N/A
9.
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
Interworking enables a PW to connect ACs that have different link types, including ATM, FR, HDLC,
Ethernet, and PPP. In an IPv4 interworking scenario, a PE extracts IPv4 packets from frames
received from the AC and sends the packets to the peer PE through the PW. The peer PE uses the
link protocol of the connected AC to encapsulate the IPv4 packets, and sends the packets through
the AC. This method hides the link types of ACs at the two ends.
To configure MPLS L2VPN interworking, follow these restrictions and guidelines:
•
When a CE is connected 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.
{
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.
{
After you enable interworking for a cross-connect, the PE responds to all ARP requests
from the CE with its own MAC address. 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 is connected to a PE through a PPP link:
If the PE's interface connected to the CE has an IP address, the IPCP negotiation is performed.
If the interface does not have an IP address, perform one of the following operations:
{
Use the
ppp ipcp ignore local-ip
command to configure the PE to support IPCP
negotiation without an 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:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter cross-connect group
xconnect-group
group-name
N/A
Summary of Contents for HPE FlexNetwork MSR Router Series
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