OSPF Virtual Link Authentication

From: Paul Grey (paul@greyboy.org)
Date: Wed Sep 04 2002 - 17:34:42 GMT-3


Could someone please clarify for me the exact context that the
authentication parameters are used in the OSPF virtual link command:-

area 1 virtual-link 1.1.1.1 [authentication | authentication-key]

I currently have a config with Area 0 using plain text authentication
(password cisco) and Area 1 is using message-digest (sanjose).

Ive configured a virtual link across Area 1 to a router tagged to Area
2.

Using:-

Area 0 authentication
Area 1 virtual-link a.b.c.d

On the Area 2 router my virtual link comes up.

So Im assuming that the link has come up because the default null
string is being used by the virtual-link for authentication. Am I right?

If I am then why use the parameters in the command.

Any takers?

TIA

Paul



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