Configuring Inbound Route Filtering; Configuring Ipv6 Bgp And Igp Route Synchronization - 3Com S7906E Configuration Manual

IPv6 BGP advertises routes passing the specified policy to peers. Using the protocol argument can filter
only the routes redistributed from the specified protocol. If no protocol is specified, IPv6 BGP filters all
routes to be advertised, including redistributed routes and routes imported with the network command.

Configuring Inbound Route Filtering

Follow these steps to configure inbound route filtering:
To do...
Enter system view
Enter BGP view
Enter IPv6 address family view
Configure inbound route
filtering
Apply a routing policy to routes
from an IPv6 peer/peer group
Specify an ACL to filter routes
imported from an IPv6
peer/peer group
Specify an AS path ACL to filter
routing information imported
from an IPv6 peer/peer group
Specify an IPv6 prefix list to
filter routing information
imported from an IPv6
peer/peer group
Specify the upper limit of
prefixes allowed to receive from
an IPv6 peer/peer group
Only routes passing the configured filtering can be added into the local IPv6 BGP routing table.
Members of a peer group can have different inbound route filtering policies.

Configuring IPv6 BGP and IGP Route Synchronization

With this feature enabled and when a non-BGP router is responsible for forwarding packets in an AS,
IPv6 BGP speakers in the AS cannot advertise routing information to outside ASs unless all routers in
the AS know the latest routing information.
Use the command...
system-view
bgp as-number
ipv6-family
filter-policy { acl6-number |
ipv6-prefix ipv6-prefix-name }
import
peer { ipv6-group-name |
ipv6-address } route-policy
route-policy-name import
peer { ipv6-group-name |
ipv6-address } filter-policy
acl6-number import
peer { ipv6-group-name |
ipv6-address } as-path-acl
as-path-acl-number import
peer { ipv6-group-name |
ipv6-address } ipv6-prefix
ipv6-prefix-name import
peer { ipv6-group-name |
ipv6-address } route-limit limit
[ percentage ]
1-9
Remarks
—
—
—
Required
Not configured by default.
Required
Not applied by default.
Required
Not specified by default.
Required
Not specified by default.
Required
Not specified by default.
Optional
Unlimited by default.