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TOPIC: What is the purpose of the passive-interface command?

What is the purpose of the passive-interface command? 10 years 2 months ago #15751

  • asab
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Hello there,

What is the purpose of the passive-interface command?

is it that it allows a router to send routing updates on an interface but not receive updates via that innterface?

i think that's, or is it something else?

let me know.

thanks in advance.
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Re: What is the purpose of the passive-interface command? 10 years 2 months ago #15752

  • Alans
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hi,
You can use the passive-interface command to control the advertisement of routing information. The command enables the suppression of routing updates over some interfaces while it allows updates to be exchanged normally over other interfaces.

With most routing protocols, the passive-interface command restricts outgoing advertisements only. However, when used with Enhanced Interior Gateway Routing Protocol (EIGRP), the effect is slightly different. This document demonstrates that use of the passive-interface command in EIGRP suppresses the exchange of hello packets between two routers, which results in the loss of their neighbor relationship. This stops not only routing updates from being advertised, but it also suppresses incoming routing updates. This document also discusses the configuration required in order to allow the suppression of outgoing routing updates, while it also allows incoming routing updates to be learned normally from the neighbor.


check this link:
www.cisco.com/en/US/tech/tk365/technolog...186a0080093f0a.shtml

source: cisco.com
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