From: Joe Chang (changjoe@earthlink.net)
Date: Wed Jun 23 2004 - 10:06:29 GMT-3
Why is there a need for a feature like FREEK? Is NNI that unreliable, or is
NNI not the only way to link FR switches?
----- Original Message -----
From: "Geert Nijs" <geert.nijs@simac.be>
To: "ccie2be" <ccie2be@nyc.rr.com>; "Kenneth Wygand"
<KWygand@customonline.com>; "Group Study" <ccielab@groupstudy.com>
Sent: Tuesday, June 22, 2004 5:39 PM
Subject: RE: Frame Relay End2 End keepalives
> The trick is applying a frame-relay class map ONLY to ONE DLCI in a P2MP
> interface.
> This is done as follows:
>
> interface Serial0.2 multipoint
> ip address 150.50.100.2 255.255.255.224
> frame-relay map ip 150.50.100.2 205
> frame-relay map ip 150.50.100.5 205 broadcast
> frame-relay map ip 150.50.100.6 206 broadcast
> frame-relay interface-dlci 205
> class END2END
>
> map-class frame-relay END2END
> frame-relay end-to-end keepalive mode bidirectional (or whatever you
> want)
>
>
> This has nothing to do with "dynamic" DLCI's. That implies that you
> simply disable inverse-arp.
>
> Regards,
> Geert
>
> -----Oorspronkelijk bericht-----
> Van: nobody@groupstudy.com [mailto:nobody@groupstudy.com] Namens ccie2be
> Verzonden: dinsdag 22 juni 2004 23:18
> Aan: Kenneth Wygand; Group Study
> Onderwerp: Re: Frame Relay End2 End keepalives
>
>
> Hmmm. That's a very interesting idea.
>
> I didn't think one could use both f/r static maps and the f/r
> interface-dlci command together under the same interface. Have you ever
> tried that? I haven't.
>
> But,....
>
> I'm not sure about that dynamic mapping prohibition. I just figured if
> dynamic mapping is allowed, then you can't use the interface-dlci
> command. Period.
>
> What I don't understand is why isn't there a class option in the fram
> map ip command? Heck, there are lot's of other options. Why not this
> one?
>
> In fact, isn't class an option with the dialer map command?
>
> Tim
> ----- Original Message -----
> From: "Kenneth Wygand" <KWygand@customonline.com>
> To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study"
> <ccielab@groupstudy.com>
> Sent: Tuesday, June 22, 2004 4:59 PM
> Subject: RE: Frame Relay End2 End keepalives
>
>
> Tim,
>
> I believe, even though you are using frame maps, you should still put
> this configuration on the DLCI through "frame-relay interface-dlci xxx"
> and putting it under that configuration mode. I don't think this
> implies that you are using dynamic DLCI assignments.
>
> Hopefully someone will correct me if I am wrong.
>
> Kenneth E. Wygand
> Systems Engineer, Project Services
> CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
> Network+, A+
> Custom Computer Specialists, Inc.
> "The only unattainable goal is the one not attempted." -Anonymous
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> ccie2be
> Sent: Tuesday, June 22, 2004 4:45 PM
> To: Group Study
> Subject: Frame Relay End2 End keepalives
>
> Hey guys,
>
> Got another network puzzle.
>
> R4 is the hub of a spoke and hub FR cloud connecting R5 and R3.
>
> All config's are on multipoint interfaces.
>
> There's also an isdn circuit between R4 and R5.
>
> This task forbids me to use any dynamic mappings or dlci's that weren't
> specified.
>
> I'm to config FR end2end keepalives (FREEK) in order to detect if R5's
> F/R connection to R4 is actually down.
>
> R5 is to poll R4 and R4 is supposed to respond.
>
> I configured everything as stated and it seemed to work - at least for a
> while. But, periodically, I would lose connectivity.
>
> Since FREEK has to be configured in a map-class, I wanted to assign the
> map-class to the particular dlci's relevant to this task.
>
> But, as it turns out, unless I'm mistaken, there's no class option
> available in the fram map ip statement. So, instead, I just assigned the
> map-class to the interface or multipoint subinterface.
>
> BTW, the idea was that if the f/r link between R4 and R5 went down, this
> would trigger R5 to call R4 over the isdn circuit.
>
> After struggling with this for a while, I simply had to turn off FREEK
> cause it was messing up ospf and the other IGP's running in the network.
>
> Anyone know how I should have solved this problem? Or, more
> specifically, how should FREEK be configured on a multipoint interface?
> I've only seen it configured on p2p interfaces.
>
> All ideas are greatly welcomed.
>
> Thanks, Tim
>
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