Configuring Virtual Links - Cisco Nexus 7000 Series Configuration Manual

Chapter 6 Configuring OSPFv2
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m .
The following example shows how to create an NSSA that always translates NSSA External (type 5)
LSAs to AS External (type 7) LSAs:
switch# config t
switch(config)# router ospf 201
switch(config-router)# area 0.0.0.10 nssa translate type 7 always
switch(config-router)# copy running-config startup-config

Configuring Virtual Links

A virtual link connects an isolated area to the backbone area through an intermediate area. See the
"Virtual Links" section on page
link:
•
•
•
•
•
You must configure the virtual link on both routers involved before the link becomes active.
Note
You cannot add a virtual link to a stub area.
BEFORE YOU BEGIN
Ensure that you have enabled the OSPF feature (see the
page
Ensure that you are in the correct VDC (or use the switchto vdc command).
SUMMARY STEPS
1.
2.
3.
4.
5.
OL-20002-02
Authentication—Sets a simple password or MD5 message digest authentication and associated keys.
Dead interval—Sets the time that a neighbor waits for a Hello packet before declaring the local
router as dead and tearing down adjacencies.
Hello interval—Sets the time between successive Hello packets.
Retransmit interval—Sets the estimated time between successive LSAs.
Transmit delay—Sets the estimated time to transmit an LSA to a neighbor.
6-14).
config t
router ospf instance-tag
area area-id virtual-link router-id
show ip ospf virtual-link [brief]
copy running-config startup-config
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
6-9. You can configure the following optional parameters for a virtual
"Enabling the OSPFv2 Feature" section on
Configuring Advanced OSPFv2
6-29