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To configure IPv6 IS-IS route control:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Specify a preference for
IPv6 IS-IS routes.
ipv6 preference
{
route-policy
route-policy-name | preference } *
By default, the default
setting is 15.
4. Configure an IPv6 IS-IS
summary route.
ipv6 summary
ipv6-prefix prefix-length
[
avoid-feedback
|
generate_null0_route
|
[
level-1
|
level-1-2
|
level-2
] |
tag
tag
] *
By default, no IPv6 IS-IS
summary route is
configured.
5. Generate an IPv6 IS-IS
default route.
ipv6 default-route-advertise
[ [
level-1
|
level-1-2
|
level-2
] |
route-policy
route-policy-name ] *
By default, no IPv6 default
route is generated.
6. Configure IPv6 IS-IS to
filter redistributed routes.
ipv6 filter-policy
{ acl6-number |
prefix-list
prefix-list-name |
route-policy
route-policy-name }
export
[ protocol
[ process-id ] ]
By default, IPv6 IS-IS does
not filter redistributed
routes.
This command is usually
used together with the
ipv6
import-route
command.
7. Configure IPv6 IS-IS to
filter received routes.
ipv6 filter-policy
{ acl6-number |
prefix-list
prefix-list-name |
route-policy
route-policy-name }
import
By default, IPv6 IS-IS does
not filter received routes.
8. Configure IPv6 IS-IS to
redistribute routes from
another routing protocol.
ipv6 import-route
protocol [ process-id ]
[
allow-ibgp
] [
cost
cost | [
level-1
|
level-1-2
|
level-2
] |
route-policy
route-policy-name |
tag
tag ] *
By default, IPv6 IS-IS does
not redistribute routes from
any other routing protocol.
9. Configure the maximum
number of redistributed
Level 1/Level 2 IPv6
routes.
ipv6 import-route limit
number
By default, the maximum
number of redistributed
Level 1/Level 2 IPv6 routes
is not configured.
10. Configure route
advertisement from
Level-2 to Level-1.
ipv6 import-route isisv6 level-2 into
level-1
[
filter-policy
{ acl6-number |
prefix-list
prefix-list-name |
route-policy
route-policy-name } |
tag
tag ] *
By default, IPv6 IS-IS does
not advertise routes from
Level-2 to Level-1.
11. Configure route
advertisement from
Level-1 to Level-2.
ipv6 import-route isisv6 level-1 into
level-2
[
filter-policy
{ acl6-number |
prefix-list
prefix-list-name |
route-policy
route-policy-name } |
tag
tag ] *
By default, IPv6 IS-IS
advertises routes from
Level-1 to Level-2.
12. Specify the maximum
number of ECMP routes
for load balancing.
ipv6 maximum load-balancing
number
By default, the maximum
number of IPv6 IS-IS
ECMP routes equals the
maximum number of
ECMP routes supported by
the system.
Use the
max-ecmp-num
command to configure the
maximum number of
ECMP routes supported by
the system. For more
information about the
max-ecmp-num
command, see Layer 3—IP
Routing Command
Reference.
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