Configuring a BMR
This section describes how to configure a basic mapping rule (BMR). Configure BMR rules on the BRAS to instruct the BRAS to assign IPv6 and IPv4 addresses to MAP-CEs.
Context
BMR parameters are configured using multiple commands in an instance. In addition to the IPv4 prefix and length of a MAP domain, the IPv6 prefix and length, and EA length, PSID offset can also be configured. The PSID offset can be used to reserve ports for public IP addresses.
Procedure
- Run system-view
The system view is displayed.
- Run map rule rule-name
The MAP rule view is displayed.
- Run rule-prefix ipv6–prefix prefix-length v6prefix-length ipv4–prefix ipv4–prefix prefix-length v4prefix-length [ vpn-instance vpn-instance-name ] ea-length ea-length [ psid-offset offset-length ]
The device is enabled to verify and encapsulate MAP packets.
A unique IPv6 address must be set in each BMR. The IPv6 addresses of BMRs cannot be identical. - Run commit
The configuration is committed.