You do not need to have an IP address on each asynch port, instead you will
*bridge* them to the other ports on the device, one of which should be the
default gateway on the workstations.
HTH,
Casey
>From: "Stephen Skinner" <[EMAIL PROTECTED]>
>Reply-To: "Stephen Skinner" <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>CC: [EMAIL PROTECTED]
>Subject: RE: BCRAN Loopback int
>Date: Tue, 12 Sep 2000 13:38:09 GMT
>
>
>Many thanks chaps......that has haelped a lot...
>another question though is :-
>
>if i have 30 async ports on an access server,
>assign the same loopback interface to all 30 ports
>set all ports to unmumbered
>and have only IP address ........can this work????/and if so how does it
>tell the different ports????
>
>i`m guessing it just uses the port number ....IF it works
>
>
>many thanks
>
>steve
>
>>From: "Atif Awan" <[EMAIL PROTECTED]>
>>Reply-To: "Atif Awan" <[EMAIL PROTECTED]>
>>To: "Stephen Skinner" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
>>Subject: RE: BCRAN Loopback int
>>Date: Tue, 12 Sep 2000 17:13:27 +0500
>>
>>
>>You define a loopback interface using the global configuration mode
>>command:
>>
>>int loopback 0
>>
>>It immediately creates a virtual interface which is by default in the
>>up/up
>>state. This interface does not depend on other things ( like keepalives,
>>clocking, physical cable connectivity ) to remain in the up/up state and
>>remains up as long as the router is up and running.
>>
>>Take OSPF for example. In order for OSPF to function properly it requires
>>a
>>Router ID which is the highest IP address of an active interface on the
>>router. In case you have loopback interfaces configured then the highest
>>ip
>>address amongst those of the loopback interfaces will be chosen as the
>>router ID. The advantage you get is that if the Router ID is the ip
>>address
>>of a physical interface and the interface goes down then the OSPF
>>operation
>>is interrupted. However, if the Router ID is that of a loopback interface
>>then the OSPF operation will never get interrupted as long as the router
>>itself does not go down and a router going down is very uncommon as
>>compared
>>to an interface going down.
>>
>>BGP is another routing protocol that makes use of this advantage of the
>>loopback interface.
>>
>>I hope this clears up things a bit.
>>
>>Regards
>>Atif
>>
>>-----Original Message-----
>>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
>>Stephen Skinner
>>Sent: Tuesday, September 12, 2000 4:35 PM
>>To: [EMAIL PROTECTED]
>>Subject: BCRAN Loopback int
>>
>>
>>Chuck,Altif,Priscilla.....save me.....
>>
>>it says in my book BCRAN
>>
>>"a loopback interface is a virtual interface that never goes down
>>,therefore
>>it is an ideal line to use as the reference when using the ip unnumbered
>>command"
>>
>>i don`t understand ... a loopback interface dosen`t go
>>anywhere????...how,why would i reference this ....Can i have a real world
>>example as i don`t seem to understand WHY i would do this....
>>
>>sorry i`m being a bit thick
>>
>>thanks to ALL in advance
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