Configuring A Virtual Link; Configuring Ospf Network Types - HP MSR Series Configuration Manual

Step
3. Enter area view.
4. Configure the area as an
NSSA area.
5. Specify a cost for the default
route advertised to the
NSSA area.
NOTE:
Virtual links cannot transit an NSSA area or totally NSSA area.

Configuring a virtual link

Non-backbone areas exchange routing information through the backbone area. Connectivity between
the backbone and non-backbone areas and within the backbone must be available.
You can configure virtual links to ensure the connectivity when physical links are not enough. Virtual links
cannot transit a stub area, totally stub area, NSSA area, or totally NSSA area. MD5/HMAC-MD5
authentication supports MD5 key rollover. For more information, see
To configure a virtual link:
Step
1. Enter system view.
2. Enter OSPF view.
3. Enter area view.
4. Configure a virtual link.

Configuring OSPF network types

OSPF classifies networks into the following types based on the link layer protocol:
Broadcast—When the link layer protocol is Ethernet or FDDI, OSPF considers the network type as
•
broadcast by default.
Command
area area-id
nssa [ default-route-advertise |
no-import-route | no-summary |
translate-always |
translator-stability-interval value ]
*
default-cost cost
Command
system-view
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
area area-id
vlink-peer router-id [ hello seconds
| retransmit seconds | trans-delay
seconds | dead seconds | { simple
[ plain | cipher ] password | { md5
| hmac-md5 } key-id [ plain |
cipher ] password } ] *
65
Remarks
N/A
Not configured by default.
Optional.
The default cost is 1.
The default-cost command takes
effect only on the ABR/ASBR of an
NSSA area and a totally NSSA
area.
"Configuring OSPF authentication."
Remarks
N/A
N/A
N/A
Configure this command on both
ends of a virtual link.
hello and dead intervals must be
identical on both ends of the virtual
link.