Configure Open Shortest Path First (OSPF) with Security Device Manager
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Introduction
This document explains how to configure Open Shortest Path First (OSPF)
on your router with Security Device Manager.
OSPF is an Interior Gateway Protocol (IGP) developed by the OSPF
working group of the Internet Engineering Task Force (IETF). Designed expressly
for IP networks, OSPF supports IP subnetting and tagging of externally derived
routing information. OSPF also allows packet authentication and uses IP
multicast when it sends and receives packets. An OSPF network can be divided
into sub-domains called areas. An area is a logical collection of OSPF
networks, routers, and links that have the same area identification.
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Requirements
To perform the steps described in this document, you need to have these
items:
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Configure OSPF
To Configure OSPF, follow these steps:
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Open a web browser and type
http://router IP
address
in the Address field. The router's IP address is
the IP address that you entered in the LAN Addressing Worksheet (L6A).
Note: For further information about how to launch SDM, refer to
Configure
Your Router with Security Device Manager.
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Click Configure.
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Click the Routing tab.
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In the Routing screen, under Dynamic Routing, select the OSPF tab
and click Edit.
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In the Edit IP Dynamic Routing window, make these
changes:
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Select OSPF.
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Click Add to enter OSPF Process
ID.
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In the Add a OSPF window, make these
changes.
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In the OSPF Process ID field, enter the Process ID value in the
range 1-65535.
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Click Add.
Note: Process ID enables OSPF routing and it is local to the router.
The process ID can be any positive integer 1-65535 and you must assign a unique
ID for each OSPF routing process. If you need further assistance contact
SMB
TAC.
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In the Add a Network window, enter these
values
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In the Network field, enter the network addresses or routes that
you want the router to advertise to its neighbours. For example enter the
Default network router IP address that you entered in field L6A of the LAN
Addressing Worksheet.
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In the Wildcard Mask field enter 0.0.0.255 if
you use subnet mask of 255.255.255.0. The subnet mask is
entered in field L2A of LAN Addressing
Worksheet.
Note: The wildcard mask is an inverse mask that compares a given
address with interface addressing to determine whether OSPF uses this
interface.
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In the Area field enter the area identifier.
Note: Areas are identified by an area ID. Cisco IOS® software supports
area IDs expressed in IP address format or decimal format, for example, area
0.0.0.0 is equal to area 0. If there are multiple areas in your network, you
need to name the backbone area "area 0". For further assistance contact
SMB
TAC.
Click OK.
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Repeat step 8 to add the Guest and Secure Server network router IP
addresses. Use the Secure Server network router IP address that you entered in
field L6C of the Secure Server VLAN Addressing Worksheet and Guest network
router IP address from the field L6D of the Guest VLAN Addressing
Worksheet.
Click OK.
Note: In the Edit IP Dynamic Routing window, next to
Available Interface List, you can check the box next to the interface if you do
not want it to send the routing updates to its neighbour. However, the
interface can still receive the routing updates.
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Click on OSPF Process ID 100 to view the networks configured and
that are advertised to neighbor routers.
Click OK.
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A Commands Delivery Status window
displays.
Click OK.
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After you have configured your router for OSPF, you can verify the
OSPF configurations under Dynamic Routing of the Routing screen. Click the Edit
tab to view the networks that are advertised for OSPF
process.
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Click File > Write to Startup Config to
save your configuration.
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In the SDM Write to Startup Config Warning window,
click Yes.
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Next Step
You have now configured OSPF on your router.
To make further changes to your router, refer to the
Router Support
Page.
To configure other devices in your network, refer to the
Configuration
Overview Page.
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Troubleshoot the Procedure
This section provides information about common problems that you may
encounter. If this information does not solve your problem, contact the
SMB
Technical Assistance Center (SMB TAC) for assistance.
Causes
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Cause(s) and Suggested Solution(s)
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Your Cisco Router does not learn any OSPF routes from its
neighbours.
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Check the remote neighbour router for OSPF
configuration.
Contact the
SMB
Technical Assistance Center (SMB TAC) for further
assistance.
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Related Information
