Configuring Route Summarization - 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 .

Configuring Route Summarization

You can configure route summarization for inter-area routes by configuring an address range that is
summarized. You can also configure route summarization for external, redistributed routes by
configuring a summary address for those routes on an ASBR. See the
on page
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.
6.
DETAILED STEPS
Command
Step 1
config t
Example:
switch# config t
switch(config)#
Step 2
router ospf instance-tag
Example:
switch(config)# router ospf 201
switch(config-router)#
Step 3
area area-id range ip-prefix/length
[no-advertise]
Example:
switch(config-router)# area 0.0.0.10
range 10.3.0.0/16
Step 4
summary-address ip-prefix/length
[no-advertise | tag tag]
Example:
switch(config-router)# summary-address
10.5.0.0/16 tag 2
OL-20002-02
6-10.
6-14).
config t
router ospf instance-tag
area area-id range ip-prefix/length [no-advertise]
or
summary-address ip-prefix/length [no-advertise | tag tag-id]
show ip ospf summary-address
copy running-config startup-config
Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 4.x
"Route Summarization" section
"Enabling the OSPFv2 Feature" section on
Purpose
Enters configuration mode.
Creates a new OSPFv2 instance with the configured
instance tag.
Creates a summary address on an ABR for a range of
addresses and optionally does note advertise this
summary address in a Network Summary (type 3)
LSA.
Creates a summary address on an ASBR for a range of
addresses and optionally assigns a tag for this
summary address that can be used for redistribution
with route maps.
Configuring Advanced OSPFv2
6-35