R0106-HP MSR Router Series MPLS Command Reference(V7)

235
2. Configure the same key for the sham link on the neighbor. After the local device receives a packet
carrying the new key from the neighbor, it quits the key rollover process.
3. Execute the undo sham-link command on the local device and the neighbor to remove the old key.
This operation can avoid attacks to the sham link that uses the old key and reduce bandwidth
consumption by key rollover.
You cannot configure a sham link with the same source and destination IP address for multiple OSPF
processes in a VPN instance.
The sham links configured on the local and remote PEs must be in the same OSPF area. Otherwise, the
OSPF neighbor relationship cannot be established.
Examples
# Create a sham link with the source address 1.1.1.1 and destination address 2.2.2.2.
<Sysname> system-view
[Sysname] ospf
[Sysname-ospf-1] area 0
[Sysname-ospf-1-area-0.0.0.0] sham-link 1.1.1.1 2.2.2.2
Related commands
display ospf sham-link
rr-filter
Use rr-filter to create an RR reflection policy so that only IBGP routes whose extended community attribute
matches the specified extended community list are reflected.
Use undo rr-filter to restore the default.
Syntax
rr-filter extended-community-number
undo rr-filter
Default
An RR does not filter reflected routes.
Views
BGP VPNv4 address family view
Predefined user roles
network-admin
Parameters
extended-community-number: Specifies an extended community number in the range of 1 to 199.
Usage guidelines
By configuring different RR reflection policies on RRs in a cluster, you can implement load balancing
among the RRs.
Examples
# In BGP VPNv4 address family view, configure the RR to only reflect VPNv4 routes with an extended
community number of 10.
<Sysname> system-view