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OSPF Commands
XSR(config)#router ospf
XSR(config)#network 172.16.152.0 0.0.0.0 area 10
XSR(config)#area 10 stub
area virtual-link
This command defines an OSPF virtual link, which represents a logical connection between the
backbone and a non‐backbone OSPF area. Backbones are areas including all ABRs, networks not
wholly contained in any area, and their attached routers.
Syntax
area area-id virtual-link router-id [authentication [message-digest | null]]
[hello-interval seconds] [retransmit-interval seconds] [transmit-delay seconds]
[dead-interval seconds] [authentication-key key | message-digest-key keyid md5
key]
area-id
router-id
authentication
message-digest
null
hello-interval
seconds
retransmit-
interval
seconds
transmit-delay
seconds
dead-interval
seconds
authentication
key
message-digest
keyid md5 key
Syntax of the "no" Form
5-88 Configuring the Internet Protocol
Transit area for the virtual link ‐ expressed as decimal or IP addresses ‐
and through which a virtual link is established.
The ABR's Router ID. A virtual link is built from the ABR, where virtual
link configuration occurs. You can configure a loopback address for the
XSR to be used as the Router ID with the
command. If no loopback address is defined, the Router ID is the
highest non‐zero IP address of existing configured and active interfaces.
Authentication type.
MD5 authentication is used.
No authentication is used.
Interval between hello packets on a port. It must be the same for all
nodes attached to a network. Range: 1 to 3600 seconds.
Interval between successive retransmissions of the same LSAs. Valid
values are greater than the expected period for the update packet to
reach and return from the port, ranging from 1 to 3600 seconds.
Estimated interval for a link state update packet on the port to be
transmitted, ranging from 1 to 3600 seconds.
Interval that hello packets of a router are not communicated to neighbor
routers before the neighbor learn that the router sending the hello
packet is out of service. This value must be the same for all nodes
attached to a certain subnet, and ranges from 1 to 3600 seconds.
Password used by neighbor routers. Valid values are alphanumeric
strings up to 8 bytes. Neighbor routers on a network must have the
same password.
Specifies a key id and a password (key) for MD5 authentication.
Neighbor routers and this router use the keyid and key. Valid values
for keyid are 1 to 255. Valid values for the key are alphanumeric strings
of up to 16 characters. Neighbor routers on a network must have the
same keyid and key.
interface loopback
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