R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

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Ste
p
Command Remarks
3. Redistribute routes from
other routing protocols or
other IS-IS processes.
import-route protocol [ process-id |
all-processes | allow-ibgp ] [ allow-direct |
cost cost | cost-type { external | internal } |
[ level-1 | level-1-2 | level-2 ] | route-policy
route-policy-name | tag tag ] *
By default, no route is
redistributed.
By default, if no level is
specified, this command
redistributes routes into the
Level-2 routing table.
This command redistributes
only active routes. To
display active routes, use the
display ip routing-table
protocol command.
4. (Optional.) Configure the
maximum number of
redistributed Level
1/Level 2 IPv4 routes.
import-route limit number
The following are the default
values for the number
argument:
• 200000 for MSR2000.
• 200000 for MSR3012
• 500000 for
MSR3024/MSR3044/
MSR3064.
• 1000000 for MSR4000.
Configuring IS-IS route filtering
You can use an ACL, IP prefix list, or routing policy to filter routes calculated using received LSPs and
routes redistributed from other routing protocols.
Filtering routes calculated from received LSPs
IS-IS saves LSPs received from neighbors in the LSDB, uses the SPF algorithm to calculate the shortest path
tree with itself as the root, and installs the routes to the IS-IS routing table. IS-IS installs the optimal routes
to the IP routing table.
Perform this task to filter calculated routes. Only routes that are not filtered can be added to the IP routing
table. The filtered routes retain in the IS-IS routing table and can be advertised to neighbors.
To filter routes calculated using received LSPs:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IS-IS IPv4 unicast
address family view or
IS-IS IPv4 unicast
topology view.
• Enter IS-IS IPv4 unicast address family view:
a. isis [ process-id ] [ vpn-instance
vpn-instance-name ]
b. cost-style { wide | wide-compatible }
c. address-family ipv4 [ unicast ]
• Enter IS-IS IPv4 unicast topology view:
d. isis [ process-id ] [ vpn-instance
vpn-instance-name ]
e. cost-style { wide | wide-compatible }
f. address-family ipv4 [ unicast ]
g. topology topo-name tid tid
Use either method.