Cisco Nexus 7000 Series - Configuring a Totally Stubby Area

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Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
OL-20002-02
Chapter 7 Configuring OSPFv3
Configuring Advanced OSPFv3
3. area area-id stub
4. address-family ipv6 unicast
5. area area-id default-cost cost
6. copy running-config startup-config
DETAILED STEPS
The following example shows how to create a stub area that blocks all summary route updates:
switch# config t
switch(config)# router ospfv3 201
switch(config-router)# area 0.0.0.10 stub no-summary
switch(config-router)# copy running-config startup-config
Configuring a Totally Stubby Area
You can create a totally stubby area and prevent all summary route updates from going into the stub area.
To create a totally stubby area, use the following command in router configuration mode:
Command Purpose
Step 1
config t
Example:
switch# config t
switch(config)#
Enters configuration mode.
Step 2
router ospfv3 instance-tag
Example:
switch(config)# router ospfv3 201
switch(config-router)#
Creates a new OSPFv3 instance with the configured
instance tag.
Step 3
area area-id stub
Example:
switch(config-router)# area 0.0.0.10
stub
Creates this area as a stub area.
Step 4
address-family ipv6 unicast
Example:
switch(config-router)# address-family
ipv6 unicast
switch(config-router-af)#
(Optional) Enters IPv6 unicast address family mode.
Step 5
area area-id default-cost cost
Example:
switch(config-router-af)# area 0.0.0.10
default-cost 25
(Optional) Sets the cost metric for the default summary
route sent into this stub area. The range is from 0 to
16777215.
Step 6
copy running-config startup-config
Example:
switch(config-router)# copy
running-config startup-config
(Optional) Saves this configuration change.