Cisco Nexus 3548 User Manual

34
Cisco Nexus 3548 Switch NX-OS Unicast Routing Command Reference
OL-27852-01
Chapter Unicast Routing Commands
area stub (OSPF)
area stub (OSPF)
To define an area as an Open Shortest Path First (OSPF) stub area, use the area stub command. To
remove the area, use the no form of this command.
area area-id stub [no-summary]
no area area-id stub [no-summary]
Syntax Description
Command Default None
Command Modes Router configuration mode
Command History
Usage Guidelines Use the area stub command to configure all devices attached to the stub area. Use the area default-cost
command on an area border router (ABR) attached to the stub area. The area default-cost command
provides the metric for the summary default route generated by the ABR into the stub area.
To further reduce the number of link-state advertisements (LSAs) sent into a stub area, you can configure
the no-summary keyword on the ABR to prevent it from sending Summary LSAs (Type 3 LSAs3) into
the stub area.
This command requires the LAN Base Services license.
Examples This example shows how to create stub area 33 in OSPF 209:
switch# configure terminal
switch(config)# router ospf 201
switch(config-router)# area 33 stub
switch(config-router)#
Related Commands
area-id Identifier for the OSPF stub area. The area ID can be from 0 to 4294967295 or
an IP address.
no-summary (Optional) Prevents an Area Border Router (ABR) from sending summary link
advertisements into the stub area.
Release Modification
5.0(3)A1(1) This command was introduced.
Command Description
area default-cost Specifies a cost for the default summary route sent into a stub area.

Cisco Nexus 3548 Specifications

General

Rack Units	1RU
Product Type	Switch
Form Factor	Rack-mountable
Jumbo Frame Support	9216 bytes
Input Voltage	100-240 VAC
Product Series	Nexus 3000
Model	Nexus 3548
Operating System	Cisco NX-OS
Ports	48 x 10GE SFP+
Latency	190 ns
Airflow	Front-to-back

Summary

New and Changed Information

Preface

Describes audience, organization, and conventions of the document.

Document Conventions

Explains conventions used in command descriptions and screen examples.

Related Documentation

Lists other Cisco documentation for related products.

Unicast Routing Commands

additional-paths receive

Enables BGP additional paths for a prefix to be received from a capable peer.

address-family (BGP neighbor)

Enters neighbor address family mode for configuring BGP routing protocols.

area authentication (OSPF)

Enables authentication for an Open Shortest Path First (OSPF) area.

aggregate-address (BGP)

Creates a summary address in a Border Gateway Protocol (BGP) routing table.

authentication (HSRP)

Configures authentication for the Hot Standby Router Protocol (HSRP).

distance (EIGRP)

Sets administrative distances for EIGRP internal and external routes.

redistribute (BGP)

Injects routes from one routing domain into the Border Gateway Protocol (BGP).

router bgp

Assigns an autonomous system (AS) number and enters BGP configuration mode.

neighbor

Configures a Border Gateway Protocol (BGP) neighbor and enters configuration mode.

Unicast Routing Show Commands

show bgp

Displays Border Gateway Protocol (BGP) routes.

show ip eigrp neighbors

Displays information about neighbors discovered by EIGRP.

show ip ospf neighbors

Displays Open Shortest Path First (OSPF)-neighbor information on a per-interface basis.

show ip route

Displays routes from the unicast Routing Information Base (RIB).

show running-config

Displays the running configuration.

show vrrp

Shows information about the Virtual Router Redundancy Protocol (VRRP).