Configuring ipv6 bgp and igp route synchronization, Configuring route dampening – H3C Technologies H3C SR8800 User Manual

Page 367

Advertising
background image

351

Step Command

Remarks

8.

Specify an IPv6 prefix list to
filter routing information

imported from an IPv6
peer/peer group.

peer { ipv6-group-name |
ipv6-address } ipv6-prefix
ipv6-prefix-name import

Not specified by default

9.

Specify the upper limit of

prefixes allowed to receive
from an IPv6 peer/peer

group.

peer { ipv6-group-name |
ipv6-address
} route-limit limit

[ percentage ]

Optional
Unlimited by default

NOTE:

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

By default, upon receiving an IBGP route, an IPv6 BGP router checks the route’s next hop. If the next hop
is reachable, the IPv6 BGP router advertises the route to EBGP peers. If the synchronization feature is

configured, in addition to the reachability check of the next hop, the IPv6 BGP router must find an active

IGP route with the same network segment before it can advertise the route. (Use the display ipv6

routing-table protocol command to display the IGP route state.)
To configure IPv6 BGP and IGP route synchronization:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number

N/A

3.

Enter IPv6 address family view.

ipv6-family

N/A

4.

Enable route synchronization between

IPv6 BGP and IGP.

synchronization

Not enabled by default

Configuring route dampening

To configure BGP route dampening:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number

N/A

3.

Enter IPv6 address family

view.

ipv6-family

N/A

4.

Configure IPv6 BGP route
dampening parameters.

dampening [ half-life-reachable
half-life-unreachable reuse suppress ceiling
|

route-policy route-policy-name ]*

Optional
Not configured by

default

Advertising