3Com Switch 8800 Configuration Guide
Chapter 37 BGP/MPLS VPN Configuration
37-14
By default, the value is
both
. In general all sites in a VPN can be interconnected, and
the import-extcommunity and export-extcommunity attributes are the same, so you can
execute the command only with the
both
option.
Up to 16 vpn-targets can be configured with a command, and up to 20 vpn-targets can
be configured for a VPN-instance.
5)
Limit the maximum number of routes in a vpn-instance
This command is used to limit the maximum number of routes for a vpn-instance so as
to avoid too many routes imported from a site.
Perform the following configuration in the vpn-instance view.
Table 37-7
Limit the maximum number of routes in the vpn-instance
Operation
Command
Limit the maximum number of routes in
the vpn-instance
routing-table
limit
{
warn
threshold
|
simplyinteger
{
alarm
-
integer
|
syslog-alert
}
Remove the maximum number limitation
undo routing-table limit
Integer
is in the range of 1 to 65536 and
alarm
-
integer
is in the range of 1 to 100.
Note:
Changing the maximum route limit for VPN-instance will not affect the existing routing
table. To make the new configuration take effect immediately, you should rebuild the
corresponding routing protocol or perform
shutdown
/
undo shutdown
operation on
the corresponding interface.
6)
Configure packet redirection in hybrid MPLS VPN networking mode (in this mode,
both the service card that does not support MPLS (e.g., B card) and the service
card that supports MPLS are used) (optional).
When you configure MPLS/VPN service, you need not replace all the MPLS-incapable
B cards with MPLS-capable cards, just add a MPLS-capable card in the B card
environment and that is all right. To use the Ethernet port on B card for the connection
on CE side, you must configure packet redirection on B card in Ethernet port view to
redirect packets to the Ethernet port on the MPLS-capable card for MPLS processing.
z
Configure basic ACL.
Perform the following configuration in the system view.
