Configuring A Label Acceptance Policy - HP FlexNetwork 10500 Series Configuration Manual

Figure 16 Label advertisement control diagram
LSR B
LSR C
A label advertisement policy on an LSR and a label acceptance policy on its upstream LSR can
achieve the same purpose. As a best practice, use label advertisement policies to reduce network
load if downstream LSRs support label advertisement control.
Before you configure an LDP label advertisement policy, create an IP prefix list. For information
about IP prefix list configuration, see Layer 3—IP Routing Configuration Guide.
To configure a label advertisement policy:
Step
1. Enter system view.
2. Enter LDP view or enter
LDP-VPN instance
view.
3. Configure an IPv4 label
advertisement policy.
4. Configure an IPv6 label
advertisement policy.

Configuring a label acceptance policy

A label acceptance policy uses an IP prefix list to control the label mappings received from a peer.
As shown in
not filter label mappings from LSR C.
Advertise label
mappings permitted
by IP prefix list B
LSR A
Command
system-view
•
•
advertise-label prefix-list
prefix-list-name [ peer
peer-prefix-list-name ]
ipv6 advertise-label prefix-list
prefix-list-name [ peer
peer-prefix-list-name ]
Figure 17, LSR A uses an IP prefix list to filter label mappings from LSR B, and it does
Enter LDP view:
mpls ldp
Enter LDP-VPN instance view:
a. mpls ldp
b. vpn-instance
vpn-instance-name
33
Remarks
N/A
N/A
By default, LDP advertises all
IPv4 FEC-label mappings
permitted by the LSP generation
policy to all peers.
By default, LDP advertises all
IPv6 FEC-label mappings
permitted by the LSP generation
policy to all peers.