From: Mike Street (mstreet@xxxxxxxxxx)
Date: Fri Jul 05 2002 - 20:16:25 GMT-3
Hi everybody,
I am focussing on DLSW at the moment for my study.
I have a 2501 and a 2513 with a PC on each ethernet port running MS Netbeui
on XP to generate netbios traffic. The routers are connected to another 2500
which I'm using as a frame switch.
I can get all the different DLSW encaps working, circuits coming up etc so I
know my PC config etc is OK but when I use direct encap I get this message
on the console:
%DLSWP-3-PLFCHANGE: WAN media mtu maximum is 516; lowering peer lf
If I do show dlsw reach I get this:
DLSw Local MAC address reachability cache list
Mac Addr status Loc. port rif
0001.b5ee.a93f FOUND LOCAL TBridge-002 --no rif--
DLSw Remote MAC address reachability cache list
Mac Addr status Loc. peer
0000.9c05.228f FOUND REMOTE on interface Serial0 max-lf(516)
DLSw Local NetBIOS Name reachability cache list
NetBIOS Name status Loc. port rif
FASTPC FOUND LOCAL TBridge-002 --no rif--
DLSw Remote NetBIOS Name reachability cache list
NetBIOS Name status Loc. peer
LITTLETOSH FOUND REMOTE on interface Serial0 max-lf(516)
At this point the frames from the ethernet are dropped as the frame size is
to small and I can not get any connectivity.
if I do a sh int s0 I see that the mtu is 1500 so I'm thinking that this is
to little as a 1500 ethernet packet plus dlsw encap can not fit into this.
OK. So, if I go to my s0 interfaces on either end and add mtu 2000 it all
works OK, the LF changes to 1500 and everything works fine.
Nobody else seems to have mentioned this and it doesn't seem very elegant
though. Are other people getting this to work without changing the MTUs?
If anybody could clarify this behaviour I would really appreciate it.
Thanks
Mike
From: "yakout esmat" <yesmat@iprimus.com.au>
To: "kym blair" <kymblair@hotmail.com>; <rajett@cisco.com>;
<Gabor.Gyori@lnx.hu>; <ccielab@groupstudy.com>
Sent: Sunday, June 30, 2002 11:33 PM
Subject: RE: DLSW direct encapsulation on Frame Relay
> That's correct. And it seems that direct encap with pass-thru (DLSW)
doesn't
> work on Subinterfaces, only Lite works.
>
> Yak
>
> -----Original Message-----
> From: kym blair [mailto:kymblair@hotmail.com]
> Sent: Sunday, June 30, 2002 8:11 AM
> To: rajett@cisco.com; Gabor.Gyori@lnx.hu; yesmat@iprimus.com.au;
> ccielab@groupstudy.com
> Subject: RE: DLSW direct encapsulation on Frame Relay
>
>
>
> Gabor,
>
> If your IP is working and you can ping all interfaces on the Frame, then
you
> should be able to do DLSW on any type of interface:
>
> DLSW DIRECT OVER PHYSICAL INTERFACE:
> dlsw remote-peer 0 frame-relay interface Serial0/0 124 pass-thru
> interface serial0
> frame-relay map dlsw 124 broadcast
>
> DLSW-LITE OVER PHYSICAL INTERFACE:
> dlsw remote-peer 0 frame-relay interface Serial0/0 124
> interface serial0
> frame-relay map llc2 124 broadcast
>
> DLSW-LITE OVER MULTIPOINT:
> dlsw remote-peer 0 frame-relay interface Serial0/0.3 124
> interface serial0/0.3 point-to-multipoint
> frame-relay map llc2 124 broadcast
>
> DLSW-LITE OVER POINT-TO-POINT:
> dlsw remote-peer 0 frame-relay interface Serial0/0.3 124
> interface serial0/0.3 point-to-point
> frame-relay interface-dlci 124
> <NOTE: NO LLC2 MAPPING>
>
>
> HTH, Kym
>
>
>
>
> >From: "Raymond Jett" <rajett@cisco.com>
> >Reply-To: "Raymond Jett" <rajett@cisco.com>
> >To: Gyori Gabor <Gabor.Gyori@lnx.hu>, "yakout esmat"
> ><yesmat@iprimus.com.au>, <ccielab@groupstudy.com>
> >Subject: RE: DLSW direct encapsulation on Frame Relay
> >Date: Sat, 29 Jun 2002 08:47:39 -0500
> >
> >Just remember if you disable frame-relay inverse-arp that you need to map
> >the protocol...
> >
> >frame-relay map llc <dlci>
> >or
> >frame-relay map dlsw <dlci> (If you use the 'pass-thru' keyword)
> >
> >Raymond
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >Gyori Gabor
> >Sent: Saturday, June 29, 2002 7:04 AM
> >To: yakout esmat; ccielab@groupstudy.com
> >Subject: RE: DLSW direct encapsulation on Frame Relay
> >
> >
> >In fact I do not use subinterfaces.
> >
> >The config:
> >
> >R1:
> >dlsw local-peer peer-id 172.16.101.1
> >dlsw remote-peer 0 frame-relay interface Serial0/0 124 pass-thru
> >dlsw bridge-group 1
> >!
> >interface Serial0/0
> > description To FR switch
> > no ip address
> > encapsulation frame-relay IETF
> > frame-relay map dlsw 124 broadcast
> > frame-relay lmi-type ansi
> >
> >R4:
> >dlsw local-peer peer-id 172.16.104.1
> >dlsw remote-peer 0 frame-relay interface Serial0 421 pass-thru
> >dlsw bridge-group 1
> >!
> >interface Serial0
> > description To FR switch
> > no ip address
> > encapsulation frame-relay IETF
> > frame-relay map dlsw 421 broadcast
> > frame-relay lmi-type ansi
> >
> >Neither of the sides can see any dlsw input packets from the peer,
altough
> >the PVC is fine, IP is running on it when I map. Using llc2 maping it
works
> >fine.
> >The map dlsw statement without broadcast does not work either.
> >
> >R1#sh dlsw peer
> >Peers: state pkts_rx pkts_tx type drops ckts TCP
> >uptime
> > IF Se0/0 124 DISCONN 0 0 conf
> > - - -
> >
> >I tried it with 12.1.14 - 12.1.14, 12.1.14 - 12.0.10 IOS version
> >combination.
> >
> >Yakout, if You have a working IOS+config secnario, I look forward to get
> >it.
> >
> >Thanks, Gabor
> >
> >-----Original Message-----
> >From: yakout esmat [mailto:yesmat@iprimus.com.au]
> >Sent: Saturday, June 29, 2002 1:07 PM
> >To: Gyuri Gabor; ccielab@groupstudy.com
> >Subject: RE: DLSW direct encapsulation on Frame Relay
> >
> >
> >My experience with direct encap over Frame, is that it doesn't work over
> >Subinterface. Try it over Physical Interface it should work.
> >
> >Any body can correct me if I am wrong..
> >
> >HTH
> >
> >Yakout
> >
> >-----Original Message-----
> >From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> >Gyori Gabor
> >Sent: Saturday, June 29, 2002 6:46 PM
> >To: ccielab@groupstudy.com
> >Subject: DLSW direct encapsulation on Frame Relay
> >
> >
> >Dear list members !
> >
> >My first question as a new member: DLSW direct encapsulation on Frame
Relay
> >
> >The method for it is written on TAC pages:
> >http://www.cisco.com/warp/public/cc/pd/ibsw/ibdlsw/prodlit/dlsw3_rg.htm
> >
> >The essence of it:
> > - remote-peer frame-relay pass-thru
> > - frame-relay map dlsw on serial interface.
> >
> >Altough, using 12.1.14 IOS, it does not work for me (no connection).
> >
> >Do You have experience on it ?
> >
> >Thanks, Gabor
>
>
This archive was generated by hypermail 2.1.4 : Sat Sep 07 2002 - 19:36:20 GMT-3