Cisco Aironet 1400 Series Manuals

1 Cisco IOS Release 12.2(8)T OSPF Sham-Link Support for MPLS VPN Feature History This document describes how to configure and use a sham-link to connect Virtual Private Network (VPN) client sites that run the Open Shortest Path First (OSPF) protocol and share backdoor OSPF links in a Multiprotocol Label Switching (MPLS) VPN configuration. This document includes the following sections: • Feature Overview, page 1 • Supported Platforms, page 8 • Supported Standards, MIBs, and RFCs, page 10 • Prerequisites, page 10 • Configuration Tasks, page 10 • Configuration Examples, page 12 • Command Reference, page 12 • Glossary, page 16 Feature Overview Using OSPF in PE-CE Router Connections In an MPLS VPN configuration, the OSPF protocol is one way you can connect customer edge (CE) routers to service provider edge (PE) routers in the VPN backbone. OSPF is often used by customers that run OSPF as their intrasite routing protocol, subscribe to a VPN service, and want to exchange routing information between their sites using OSPF (during migration or on a permanent basis) over an MPLS VPN backbone. Figure 1 shows an example of how VPN client sites that run OSPF can connect over an MPLS VPN backbone. Release Modification 12.2(8)T This feature was introduced.

Corporate Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA http://www.cisco.com Tel: 408 526-4000 800 553-NETS (6387) Fax: 408 526-4100 Cisco Aironet 1400 Series Wireless Bridge Hardware Installation Guide August 2006 Text Part Number: OL-4072-04

1 Cisco One-Year Limited Hardware Warranty Terms There are special terms applicable to your hardware warranty and various services that you can use during the warranty period. Your formal Warranty Statement, including the warranty applicable to Cisco software, is available on Cisco.com.Follow these steps to access and download the Cisco Information Packet and your warranty document from Cisco.com. 1. Launch your browser, and go to this URL: http://www.cisco.com/univercd/cc/td/doc/es_inpck/cetrans.htm The Warranties and License Agreements page appears. 2. To read the Cisco Information Packet, follow these steps: a. Click the Information Packet Number field, and make sure that the part number 78-5235-02F0 is highlighted. b. Select the language in which you would like to read the document. c. Click Go. The Cisco Limited Warranty and Software License page from the Information Packet appears. d. Read the document online, or click the PDF icon to download and print the document in Adobe Portable Document Format (PDF).