From: Bob Usa (boby2kusa@hotmail.com)
Date: Sun May 04 2003 - 16:35:31 GMT-3
Charles is right. This platform baed it's FIB table on routing table as
what the CEF do. So disabling it will give you more problem than solution.
I think what you should be asking is does the routing table removes the
primary static route when it is no longer valid, it is does remove it, does
the device cat4k continues to forward the traffic to the primary static
route which it should not as the FIB should have the new adjacency.
check routing table:
show ip route <dest net>
show ip arp <next hop learned from show ip route>
check IOS FIB table:
show ip cef <dest net> detail
show ip adjacency detail | begin <next hop address>
Then check it againts software and hardware FIB table:
These two should match the DA mac address of the "show ip adjacency detail |
begin <next hop address>"
show platform software ip route network <network> <mask>
show platform hardware ip route network <network> <mask>
>From: "Charles Church" <cchurch@wamnet.com>
>Reply-To: "Charles Church" <cchurch@wamnet.com>
>To: "Nishant Sharma \(IT\)" <NishantS@daksh.com>, <ccielab@groupstudy.com>
>CC: <kymblair@hotmail.com>
>Subject: RE: how to disable "cef" on catalyst 4006?
>Date: Sun, 4 May 2003 11:20:05 -0400
>
>Nishant,
>
> I don't think disabling CEF is a good solution. The Sup3/4 are designed
>hardware-wise around CEF. I don't think any other kind of fast switching
>is
>available on them. You could always turn off route-caching, but with a
>horrible performance drop. I'd first try a newer IOS, since the Sup3 and 4
>are pretty new and may have had weird issues like this with the first
>couple
>of code releases. If the newest one still has the issue, then call TAC.
>Be
>sure to check the release notes for whatever image you want to try, to make
>sure there isn't a bug in there that would make your situation worse. HTH.
>
>Chuck Church
>CCIE #8776, MCNE, MCSE
>Wam!Net Government Services
>13665 Dulles Technology Dr. Ste 250
>Herndon, VA 20171
>Office: 703-480-2569
>Cell: 585-233-2706
>cchurch@wamnet.com
>
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Nishant Sharma (IT)
>Sent: Sunday, May 04, 2003 12:40 AM
>To: ccielab@groupstudy.com
>Cc: kymblair@hotmail.com
>Subject: how to disable "cef" on catalyst 4006?
>
>
>Dear All,
>
>How do we disable "CEF" on catalyst 4006 coz "no ip cef" command is not
>working? When I give this command it gives this error -
>
>Core-I-Switch(config)#no ip cef
>%Cannot disable CEF on this platform
>
>Please suggest a solution as this is hindering me to install floating
>static
>routes, ie, even if my primary static route goes down it doesn't take a
>static
>route which I have assigned with a higher AD and when I issue a "sh ip cef"
>it
>still shows me entries for the previous route.
>
>Regards,
>Nishant
>
>
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