Filter Routes - Dell Force10 S4810P Configuration Manual

Use the following command in CONFIGURATION ROUTER OSPF mode to configure virtual links.
Command Syntax
area area-id virtual-link router-id
seconds |
retransmit-interva
seconds |
transmit-delay
authentication-key
md5
key]
Use the
show ip ospf process-id virtual-links
virtual link.
Figure 34-18.
FTOS#show ip ospf 1 virtual-links
Virtual Link to router 192.168.253.5 is up
Run as demand circuit
Transit area 0.0.0.1, via interface GigabitEthernet 13/16, Cost of using 2
Transmit Delay is 1 sec, State POINT_TO_POINT,

Filter routes

To filter routes, use prefix lists. OSPF applies prefix lists to incoming or outgoing routes. Incoming routes
must meet the conditions of the prefix lists. If they do not, OSPF does not add the route to the routing table.
Configure the prefix list in CONFIGURATION PREFIX LIST mode prior to assigning it to the OSPF
process.
Command Syntax
ip prefix-list prefix-name
750
| Open Shortest Path First (OSPFv2 and OSPFv3)
[
hello-interval
l seconds |
seconds |
dead-interval
key |
message-digest-key
Command Example: show ip ospf process-id virtual-links
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
Hello due in 00:00:02
Command Mode
CONFIG-ROUTER-
OSPF-id
keyid
Only the Area ID and Router ID require configuration to create a
virtual link. If no other parameter is entered, the defaults are used.
Use EITHER the Authentication Key or the Message Digest
(MD5) key.
command (Figure 34-18)
Command Mode
CONFIGURATION
Usage
Configure the optional parameters of a
virtual link:
• Area ID: assigned earlier (0-65535 or
A.B.C.D)
• Router ID: IP address associated with
the virtual link neighbor
• Hello Interval Seconds: 1-8192
(default 10)
• Retransmit Interval Seconds: 1-3600
(default 5)
• Transmit Delay Seconds: 1-3600
(default 1)
• Dead Interval Seconds: 1-8192
(default 40)
• Authentication Key: 8 characters
• Message Digest Key: 1-255
• MD5 Key: 16 characters
in the EXEC mode to view the
Usage
Create a prefix list and assign it a unique
name. You are in PREFIX LIST mode.