3Com 3C13636 Configuration Manual page 891

3Com Router 3000 Ethernet Family
Configuration Guide
Operation
Remove the sham-link
By default, the value of cost is 1, and the values of dead, hello, retransmit and
trans-delay are respectively 40, 10, 5 and 1 second.
VI. Configuring HoVPN
The difference between HoVPN configuration and common BGP/MPLS VPN
configuration lies in the SPE-UPE connection.
You need to perform the following configuration:
Specifying a BGP peer/peer group on SPE as the UPE
Sending the default routes of specified VPN instances to UPE
No special configuration is needed for HoVPN on UPE.
Step 1: Advertise default route to the peer (group)
This command adds a default route which uses local address as next hop on the PE
SPE.
Perform the following configuration in BGP or MBGP IPv4-family view.
Table 3-24 Advertise default route to the peer (group)
Configure to advertise default
route to the peer (group)
Remove to advertise default
route to the peer (group)
After executing the peer default-route-advertise command, SPE advertises a default
route to UPE with its address being the next hop, regardless of the existence of default
routes in the local routing table.
Note:
Before sending the default routes of specified VPN instances to a BGP peer/peer group,
make sure that the BGP peer/peer group is UPE.
Step 2: Configure BGP neighbor as the UPE of BGP/MPLS VPN
Perform the following configurations in VPNv4 view.
undo sham-link source-addr destination-addr
Operation
3Com Corporation
Chapter 3 BGP/MPLS VPN Configuration
Command
Command
peer group-name default-route-advertise
undo peer group-name default-route-advertise
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