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Quinton Clark
Internet Systems Engineer
Exodus Internet
Tel : 0808 100 3963
[EMAIL PROTECTED]
-----Original Message-----
From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 27, 2001 5:47 PM
To: [EMAIL PROTECTED]
Subject: Re: FastEthernet is up, Line protocol down [7:1828]
THANKS! Please ignore my other message that said I was down, down because I
didn't have a real answer yet. You are terrific!
Priscilla
At 10:10 AM 4/27/01, you wrote:
>Sorry if it sounded like I was guessing.. :-}
>
>Played with issue again last night. Every time that I have seen UP/Down
>the cable was detached etc. We install/move/remove a lot of equipment
>and it is always up/down...
>
>The line protocol is dependent on the keepalives. Just try a "no keep"
>on the interface and UP/UP it will go.
>
>Ran tests on:
>2500 AUI
>2600 10M RJ45 (half & full duplex)
>3600 10M RJ45 (half & full duplex)
>4500 100M RJ45 & MII (half & full duplex)
>7200 10M RJ45 (half & full duplex)
>7200 100M RJ45 (half & full duplex)
>7200 100M MII (Believe I did this too but can not remember)
>unfortunately the 7500s with Gig & FE MMF ports are being used for spare
>parts @tt.
>
>In all cases if keepalives are disabled, the line protocol is up. If
>not up/down.
>
>Sniffer shows the keepalive frames as having the same source and
>destination mac address. Ethernet type 9000 "LOOP" frame.
>
>I would like to attach the interfaces to the switch, and filter
>keepalives out. Maybe [set port protocol slot/mod group off]. I doubt
>if that will work, but will try and find out.
>
>PS: it is a nice document & so is the digital research paper.
>
>DaveC
>
>
>Priscilla Oppenheimer wrote:
> >
> > I'm looking for a real answer from experience, not documentation. That
page
> > you sent me was something I helped write!!!! ;-)
> >
> > Priscilla
> >
> > At 06:53 PM 4/26/01, David Chandler wrote:
> > >Found some info:
> > >
> > >Interface is UP: means the routers ethernet hardware has been
activated.
> > >Line Protocol Down: The router never sees any of the keepalives that it
> > >sends out.
> > >
> > >YES: you'll get the same thing with RJ45...
> > >
> > >
> > >http://www.cisco.com/univercd/cc/td/doc/cisintwk/itg_v1/tr1904.htm
> > >
> > >Search for: "show interfaces ethernet Field Descriptions" it'll explain
> > >in a little more detail.
> > >
> > >DaveC
> > >
> > >Priscilla Oppenheimer wrote:
> > > >
> > > > I tried to do some more research on this and couldn't get a good
>answer.
> > > >
> > > > Does anyone know exactly in which cases the router reports the
>interface
> > > > up, down even if there is no cable attached? Looking at show
interface
> > > > ethernet,
> > > >
> > > > Router reports up, down with no cable for AUI.
> > > >
> > > > How about RJ45?
> > > >
> > > > How about MII?
> > > >
> > > > GMII?
> > > >
> > > > Others?
> > > >
> > > > Thanks
> > > >
> > > > Priscilla
> > > >
> > > > > > Priscilla
> > > > > >
> > > > > > At 08:21 PM 4/25/01, md. nazri wrote:
> > > > > > >thanks for the answer...
> > > > > > >i understand that LP will down if no connection attach, but why
FE
> > >still
> > > > >up,
> > > > > > >does it up forever until we shut it down? Does it apply the
same
>to
> > > > > > >Ethernet..?
> > > > > > >----- Original Message -----
> > > > > > >From: "Vincent Chong"
> > > > > > >To:
> > > > > > >Sent: Wednesday, April 25, 2001 3:48 PM
> > > > > > >Subject: Re: FastEthernet is up, Line protocol down [7:1828]
> > > > > > >
> > > > > > >
> > > > > > > > 1) I guess you enable the fastethernet port in the
running
> > > > > > > > configuration. You have to
> > > > > > > > shutdown the port, so the port will administrative shut
>down
> > >and
> > > > >line
> > > > > > > > protocol down.
> > > > > > > >
> > > > > > > > 2) Line protocol will up if there is any phyiscal
connection
> > > > >attached
> > > > > > >to
> > > > > > > > Fastethernet.
> > > > > > > > Becasue the port in your router will detect keepalive
>signal,
> > > > when
> > > > >it
> > > > > > > > detected, it will
> > > > > > > > up. You can type no keepalive under interface
> > configuration,
> > > > >the
> > > > > > > > ethernet interface
> > > > > > > > will keep up even no physical connection. You have to
>enable
> > >the
> > > > > > > > interface, of courese.
> > > > > > > >
> > > > > > > > Hope this help
> > > > > > > > Vincent Chong
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > ""md. nazri"" hi all,
> > > > > > > > > got one question regarding FastEthernet on Cisco 2620..
> > > > > > > > > why the status showed FastEthernet is up, Line protocol
down
> > > > >although
> > > > > > >the
> > > > > > > > > cable was pulled out from the port...in what cases the
port
> > will
> > > > > > >down..any
> > > > > > > > > help appreciated
> > > > > > > > >
> > > > > > > > > tq
> > > > > > > > > FAQ, list archives, and subscription info:
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> > > > > >
> > > > > >
> > > > > > ________________________
> > > > > >
> > > > > > Priscilla Oppenheimer
> > > > > > http://www.priscilla.com
> > > > > > FAQ, list archives, and subscription info:
> > > > >http://www.groupstudy.com/list/cisco.html
> > > > > > Report misconduct and Nondisclosure violations to
> > [EMAIL PROTECTED]
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> > > > >http://www.groupstudy.com/list/cisco.html
> > > > >Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
> > > >
> > > > ________________________
> > > >
> > > > Priscilla Oppenheimer
> > > > http://www.priscilla.com
> > > > FAQ, list archives, and subscription info:
> > >http://www.groupstudy.com/list/cisco.html
> > > > Report misconduct and Nondisclosure violations to
[EMAIL PROTECTED]
> > >FAQ, list archives, and subscription info:
> > >http://www.groupstudy.com/list/cisco.html
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> >
> > ________________________
> >
> > Priscilla Oppenheimer
> > http://www.priscilla.com
> > FAQ, list archives, and subscription info:
>http://www.groupstudy.com/list/cisco.html
> > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
>FAQ, list archives, and subscription info:
>http://www.groupstudy.com/list/cisco.html
>Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
________________________
Priscilla Oppenheimer
http://www.priscilla.com
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