5-29
IS-IS does not filter routes calculated from received LSPs by default.
Note that if you want to reference an advanced ACL (with a number from 3000 to 3999) in the
command or in the route policy, the ACL should be configured with the
rule
[
rule-id
] {
deny
|
permit
}
ip source
sour-addr sour-wildcard
command to deny/permit a route with the specified destination, or
with the
rule
[
rule-id
] {
deny
|
permit
}
ip source
sour-addr sour-wildcard
destination
dest-addr
dest-wildcard
command to deny/permit a route with the specified destination and mask. The
source
keyword specifies the destination address of a route while the
destination
keyword specifies the
subnet mask of the route (the subnet mask must be valid; otherwise, the configuration is ineffective).
Related commands:
filter-policy export
.
Examples
# Reference ACL 2000 to filter routes calculated from received LSPs.
<Sysname> system-view
[Sysname] acl number 2000
[Sysname-acl-basic-2000] rule deny source 192.168.10.0 0.0.0.255
[Sysname-acl-basic-2000] quit
[Sysname] isis 1
[Sysname-isis-1] filter-policy 2000 import
# Configure ACL 3000 to permit only route 113.0.0.0/16 to pass, and reference ACL 3000 to filter
routes calculated from received LSPs.
<Sysname> system-view
[Sysname] acl number 3000
[Sysname-acl-adv-3000] rule 10 permit ip source 113.0.0.0 0 destination 255.255.0.0 0
[Sysname-acl-adv-3000] rule 100 deny ip
[Sysname-acl-adv-3000] quit
[Sysname] isis 1
[Sysname-isis 1] filter-policy 3000 import
flash-flood
Syntax
flash-flood
[
flood-count
flooding-count
|
max-timer-interval flooding-interval
| [
level-1
|
level-2
] ] *
undo flash-flood
[
level-1
|
level-2
]
View
IS-IS view
Default Level
2: System level
Parameters
flood-count flooding-count
: Specifies the maximum number of LSPs to be flooded before the next
SPF calculation, ranging from 1 to 15. The default is 5.
max-timer-interval flooding-interval
: Specifies the delay (in milliseconds) of the flash flooding,
ranging from 10 to 50000. The default is 10.
level-1
: Enables flash flooding for
level-1
.
level-2
: Enables flash flooding for
level-2
.
