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Module 3– Virtual-links

OSPF includes the concept of virtual links. Virtual links mend the OSPF backbone area (area 0). The backbone should never be intentionally partitioned, but if partitioning occurs, consider using a virtual link to temporarily repair the backbone area. Virtual links are logical connections that are vaguely analogous to a tunnel. Virtual links are not a true tunnel in the sense that one protocol is encapsulated by another. | BACHKH OZÏ N e I w o k I n g Academy 111 1111 CISCO OSPF BSCI Module 3 Lesson 8 - Virtual-links BSCI 2008 Cisco Systems Inc. All rights reserved. Cisco Confidential 1 CCNP - BSCI Bachkhoa Networking Academy Objective OSPF Virtual Links Configuring Virtual Links Virtual Link Configuration Example Verifying a Virtual Link Configuration BSCI 2008 Cisco Systems Inc. All rights reserved. Học viện mạng Bách Khoa - www.bkacad.com 2 CCNP - BSCI Bachkhoa Networking Academy OSPF Virtual Links OSPF includes the concept of virtual links. Virtual links mend the OSPF backbone area area 0 . The backbone should never be intentionally partitioned but if partitioning occurs consider using a virtual link to temporarily repair the backbone area. Virtual links are logical connections that are vaguely analogous to a tunnel. Virtual links are not a true tunnel in the sense that one protocol is encapsulated by another. You can use a virtual link in the following cases -Area 0 becomes partitioned -A nonbackbone area does not have a physical c area 0 BSCI 2008 Cisco Systems Inc. All rights reserved. Học viện mạng Bách Khoa - www.bkacad.com