need info about loopback & distrubution

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Jun 14th, 2008
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Hi people,


Can any body give some suggestions about Loopback & Distribution list.


1. What is the loopback address & how it will work out?


2. What is the Distrubution list?



Regards,

Naidu.

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spremkumar Sun, 06/15/2008 - 22:12
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Hi


Loopback interface is a logical interface which is mainly required to maintain routing protocol neighborship alive though your physical link goes down.

It comes into effect when you have multiple links terminated and also in scenarios like where you need a router to create neighborship with the loopback ip address which wont go down at any point of time.


it can be used to form your ipsec tunnels also especially when you have multiple links connected to that location.

By doing so the ipsec tunnel remains up since it can be reached via different physical links though one of the link is down.


Distribute lists are used to filter networks received in updates and to suppress networks from being advertised in updates.


http://www.cisco.com/en/US/partner/docs/ios/11_2/np1/command/reference/5riprout.html#wp2471


http://www.cisco.com/en/US/partner/docs/ios/11_2/np1/command/reference/5riprout.html#wp2518


do refer the above links for more info.


regds




ilnaiduccna Tue, 06/17/2008 - 19:55
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Hi Prem,


Thanks for your info.


As you said distribute lists are used to filer networks.


I heard that distrubute list comes in OSPF.


Can you give clear message about this.



Regards,

Naidu.

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