From: Tomasz Szymanski (tomasz.szymanski@trecom.pl)
Date: Mon Aug 04 2003 - 19:05:47 GMT-3
Are you sure Brian?
I don't see "ip router isis" on Loopback interface so it's not in isis
process.
TS
Brian Dennis wrote:
>With IS-IS when you make the interface passive the router removes the
>"ip router is-is" command from under the interface. So in your case the
>loopback is still being advertised via IS-IS.
>
>Brian Dennis, CCIE #2210 (R&S/ISP Dial/Security)
>brian@labforge.com
>http://www.labforge.com
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>Tim Fletcher
>Sent: Wednesday, January 29, 2003 11:53 AM
>To: ccielab@groupstudy.com
>Subject: ISIS passive interface
>
>Hi all,
>
>http://www.cisco.com/en/US/tech/tk472/tk474/technologies_configuration_e
>xample09186a0080093f38.shtml
>shows the following config:
>
>interface Loopback0
>ip address 172.16.1.1 255.255.255.255
>!--- Creates loopback interface and assigns
>!--- IP address to interface Loopback0.
>!
>interface Ethernet0
>ip address 172.16.12.1 255.255.255.0
>ip router isis
>
>!--- Assigns IP address to interface Ethernet0
>!--- and enables IS-IS for IP on the interface.
>!
>router isis
>passive-interface Loopback0
>net 49.0001.1720.1600.1001.00
>!
>!--- Enables the IS-IS process on the router,
>!--- makes loopback interface passive
>!--- (does not send IS-IS packets on interface),
>!--- and assigns area and system ID to router.
>
>My question is why would you need the passive-interface Lo0 command
>under
>the ISIS config, when ISIS is not configured on Lo0? Isn't this
>redundant?
>
>-Tim Fletcher
>.
>.
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