From: dusth@comcast.net
Date: Mon Mar 21 2005 - 18:17:15 GMT-3
Dillon,
The command "clock rate" is only used on DCE side of the seial interface.
Look @ your config, look like you have clockrate on the router side but "frame-relay intf-type dce" on the frame switch side.
Check your cable, DCE should connect to the frame sw side and remove the "clock rate" from the router side.
Hope this help.
Dustin
-------------- Original message --------------
> Dillon,
>
> The command, frame-relay intf-type dce, is not equivalent to, clock rate X
> bps.
>
> When I talk about DCE and DTE, I'm talking about a layer function, not a
> layer 2 function.
>
> The command, frame-relay intf-type dce, is a layer 2 function and MUST be
> configured on the frame switch (I believe). The command, clock rate is a
> layer 1 function and must be configured on only one side of the serial link.
>
> Off-hand, I don't see the problem with your config so here's what I would
> do.
>
> On one link, any link, it doesn't matter, return the interface to its
> default config. (You can copy the config to notepad first if you want.) Use
> the global command, default interface sX.
>
> Then assign an ip address to each side of the link and config the clock rate
> command on one side. Then ping to make sure you have layer 1 compatibility.
>
> Once you're sure of layer 1 compatibility, then config each interface as
> appropriate for layer 2. This way if you have a problem, you'll know its
> not related to your layer DCE and DTE settings. Once you can ping at the
> layer 2 level, then and only then, go ahead and configure your layer 3 info.
>
> HTH, Tim
>
>
> -----Original Message-----
> From: Dillon Yang [mailto:gzdillon@hotmail.com]
> Sent: Monday, March 21, 2005 10:28 AM
> To: ccie2be
> Cc: Group Study
> Subject: Re: DTE on FR switch
>
> Hi, Tim:
>
> Do you mean the config is correct? Please point the error.
>
> TIA
> dillon
>
> ps:
>
> FRS#s run
> Building configuration...
>
> Current configuration:
> !
> version 11.0
> service udp-small-servers
> service tcp-small-servers
> !
> hostname FRS
> !
> !
> no ip domain-lookup
> frame-relay switching
> !
> interface Loopback0
> ip address 172.16.107.1 255.255.255.0
> !
> interface Serial1
> no ip address
> encapsulation frame-relay
> frame-relay lmi-type ansi
> frame-relay intf-type dce
> frame-relay route 301 interface Serial4 103
> frame-relay route 302 interface Serial2 203
> frame-relay route 304 interface Serial6 403
> !
> interface Serial2
> no ip address
> encapsulation frame-relay
> frame-relay lmi-type ansi
> frame-relay intf-type dce
> frame-relay route 201 interface Serial4 102
> frame-relay route 203 interface Serial1 302
> frame-relay route 204 interface Serial6 402
> !
> interface Serial4
> no ip address
> encapsulation frame-relay
> frame-relay lmi-type ansi
> frame-relay intf-type dce
> frame-relay route 102 interface Serial2 201
> frame-relay route 103 interface Serial1 301
> frame-relay route 104 interface Serial6 401
> !
> interface Serial6
> no ip address
> encapsulation frame-relay
> frame-relay lmi-type ansi
> frame-relay intf-type dce
> frame-relay route 401 interface Serial4 104
> frame-relay route 402 interface Serial2 204
> frame-relay route 403 interface Serial1 304
> !
> line con 0
> line aux 0
> transport input all
> line vty 0 4
> login
> !
> end
>
> FRS#s int Serial1
> Serial1 is down, line protocol is down
> Hardware is MCI Serial
> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
> Encapsulation FRAME-RELAY, loopback not set, keepalive set (10 sec)
> LMI enq sent 0, LMI stat recvd 0, LMI upd recvd 0
> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0, DCE LMI down
> LMI DLCI 0 LMI type is ANSI Annex D frame relay DCE
> Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
> Last input never, output 0:15:20, output hang never
> Last clearing of "show interface" counters never
> Input queue: 0/75/0 (size/max/drops); Total output drops: 0
> Output queue: 0/64/0 (size/threshold/drops)
> Conversations 0/2 (active/max active)
> Reserved Conversations 0/0 (allocated/max allocated)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 0 packets input, 0 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 0 giants
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 5 packets output, 359 bytes, 0 underruns
> 0 output errors, 0 collisions, 35 interface resets, 0 restarts
> 0 output buffer failures, 0 output buffers swapped out
> 21 carrier transitions
> FRS#s int Serial2
> Serial2 is down, line protocol is down
> Hardware is MCI Serial
> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
> Encapsulation FRAME-RELAY, loopback not set, keepalive set (10 sec)
> LMI enq sent 0, LMI stat recvd 0, LMI upd recvd 0
> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0, DCE LMI down
> LMI DLCI 0 LMI type is ANSI Annex D frame relay DCE
> Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
> Last input never, output 0:15:38, output hang never
> Last clearing of "show interface" counters never
> Input queue: 0/75/0 (size/max/drops); Total output drops: 0
> Output queue: 0/64/0 (size/threshold/drops)
> Conversations 0/2 (active/max active)
> Reserved Conversations 0/0 (allocated/max allocated)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 0 packets input, 0 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 0 giants
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 5 packets output, 359 bytes, 0 underruns
> 0 output errors, 0 collisions, 35 interface resets, 0 restarts
> 0 output buffer failures, 0 output buffers swapped out
> 5 carrier transitions
> FRS#s int Serial4
> Serial4 is down, line protocol is down
> Hardware is MCI Serial
> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec, rely 255/255, load 1/255
> Encapsulation FRAME-RELAY, loopback not set, keepalive set (10 sec)
> LMI enq sent 0, LMI stat recvd 0, LMI upd recvd 0
> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0, DCE LMI down
> LMI DLCI 0 LMI type is ANSI Annex D frame relay DCE
> Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
> Last input never, output 0:15:59, output hang never
> Last clearing of "show interface" counters never
> Input queue: 0/75/0 (size/max/drops); Total output drops: 0
> Output queue: 0/64/0 (size/threshold/drops)
> Conversations 0/2 (active/max active)
> Reserved Conversations 0/0 (allocated/max allocated)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 0 packets input, 0 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 0 giants
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 5 packets output, 359 bytes, 0 underruns
> 0 output errors, 0 collisions, 36 interface resets, 0 restarts
> 0 output buffer failures, 0 output buffers swapped out
> 3 carrier transitions
> FRS#s fram rou
> Input Intf Input Dlci Output Intf Output Dlci Status
> Serial1 301 Serial4 103 inactive
> Serial1 302 Serial2 203 inactive
> Serial1 304 Serial6 403 inactive
> Serial2 201 Serial4 102 inactive
> Serial2 203 Serial1 302 inactive
> Serial2 204 Serial6 402 inactive
> Serial4 102 Serial2 201 inactive
> Serial4 103 Serial1 301 inactive
> Serial4 104 Serial6 401 inactive
> Serial6 401 Serial4 104 inactive
> Serial6 402 Serial2 204 inactive
> Serial6 403 Serial1 304 inactive
> FRS#
> !
> hostname r1
> !
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay
> clockrate 64000
> no fair-queue
> frame-relay lmi-type ansi
> !
> interface Serial0/0.123 multipoint
> bandwidth 125
> ip address 172.16.123.1 255.255.255.0
> ip ospf network point-to-multipoint
> ip ospf hello-interval 10
> frame-relay map ip 172.16.123.1 103
> frame-relay map ip 172.16.123.2 102 broadcast
> frame-relay map ip 172.16.123.3 103 broadcast
> no frame-relay inverse-arp
> !
> r1#s int
> Serial0/0 is up, line protocol is down
> Hardware is PowerQUICC Serial
> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation FRAME-RELAY, loopback not set
> Keepalive set (10 sec)
> LMI enq sent 85, LMI stat recvd 0, LMI upd recvd 0, DTE LMI down
> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
> LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
> FR SVC disabled, LAPF state down
> Broadcast queue 0/64, broadcasts sent/dropped 24/0, interface broadcasts
> 17
> Last input never, output 00:00:01, output hang never
> Last clearing of "show interface" counters 00:14:14
> Input queue: 0/75/144/0 (size/max/drops/flushes); Total output drops: 0
> Queueing strategy: fifo
> Output queue: 0/40 (size/max)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 144 packets input, 3764 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
> 11 input errors, 0 CRC, 11 frame, 0 overrun, 0 ignored, 0 abort
> 110 packets output, 2512 bytes, 0 underruns
> 0 output errors, 0 collisions, 26 interface resets
> 0 output buffer failures, 0 output buffers swapped out
> 4 carrier transitions
> DCD=up DSR=up DTR=up RTS=up CTS=up
>
> Serial0/0.123 is down, line protocol is down
> Hardware is PowerQUICC Serial
> Internet address is 172.16.123.1/24
> MTU 1500 bytes, BW 125 Kbit, DLY 20000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation FRAME-RELAY
> Last clearing of "show interface" counters never
>
> !
> hostname r2
> !
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay
> clockrate 64000
> no fair-queue
> frame-relay lmi-type ansi
> !
> interface Serial0/0.123 point-to-point
> bandwidth 125
> ip address 172.16.123.2 255.255.255.0
> ip ospf network point-to-multipoint
> ip ospf hello-interval 10
> frame-relay interface-dlci 201
> !
> Serial0/0 is down, line protocol is down
> Hardware is PowerQUICC Serial
> MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation FRAME-RELAY, loopback not set
> Keepalive set (10 sec)
> LMI enq sent 0, LMI stat recvd 0, LMI upd recvd 0, DTE LMI down
> LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
> LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
> FR SVC disabled, LAPF state down
> Broadcast queue 0/64, broadcasts sent/dropped 0/0, interface broadcasts 0
> Last input never, output never, output hang never
> Last clearing of "show interface" counters 00:07:23
> Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
> Queueing strategy: fifo
> Output queue: 0/40 (size/max)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 0 packets input, 0 bytes, 0 no buffer
> Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 0 packets output, 0 bytes, 0 underruns
> 0 output errors, 0 collisions, 15 interface resets
> 0 output buffer failures, 0 output buffers swapped out
> 0 carrier transitions
> DCD=up DSR=up DTR=down RTS=down CTS=up
>
> Serial0/0.123 is down, line protocol is down
> Hardware is PowerQUICC Serial
> Internet address is 172.16.123.2/24
> MTU 1500 bytes, BW 125 Kbit, DLY 20000 usec,
> reliability 255/255, txload 1/255, rxload 1/255
> Encapsulation FRAME-RELAY
> Last clearing of "show interface" counters never
> ================================ end ==============================
> dillon
>
>
>
> ----- Original Message -----
> From: "ccie2be"
> To: "'Dillon Yang'" ; "'Group Study'"
>
> Sent: Monday, March 21, 2005 10:16 PM
> Subject: RE: DTE on FR switch
>
>
> > Dillon,
> >
> > I've been following this thread and it seems that you're still not clear
> on
> > this point.
> >
> > When using a serial link, regardless of the encap method, one side of the
> > link must be dce and the other side must be dte. It doesn't matter which
> > side is which.
> >
> > Usually, the F/R switch interface is the dce side and the router interface
> > is dte but it doesn't have to be that way. It can be the other way around.
> >
> > The key point is that if one side is DTE the other side is DCE. That's all
> > there is to it. (Well, that's almost all there is to it. You have to know
> > how to make a interface the DCE side by using the clock rate command which
> > you already know.)
> >
> > Oh, while I think of it, I'll just mention one other point. When you're
> > setting the clock rate and you enter "?" to see what rates are available,
> > but I've found that not all clock rates will actually work. My guess is
> > that the highest clock rate depends on the interface hardware while the
> > clock rates that show up following the "?" depend on the IOS. And, I've
> > discovered that the IOS will let you set a clock rate that won't work -
> I've
> > done that and have been quite confused about that.
> >
> > So far, I don't know of any show command which will tell me what the
> highest
> > GOOD clock rate is although I suspect such a command exists. So, what I've
> > done to find the highest clock rate is set the clock rate to some
> arbitrary
> > value and tested by pinging the remote router. If the ping works, I reset
> > the clock rate to a higher value and test again. If the clock rate doesn't
> > work, I reset the clock rate to a lower value.
> >
> > I've heard that serial interfaces come in two flavors: low speed and high
> > speed which are 115 kbps and T1, respectively. But, I've found the
> highest
> > GOOD clock rates to sometimes be 384 kbps which I don't understand.
> >
> > If anyone knows a show command or a better way to determine to find out
> the
> > highest GOOD clock rate, please don't hesitate to jump in.
> >
> > HTH, Tim
> >
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > Dillon Yang
> > Sent: Sunday, March 20, 2005 12:22 AM
> > To: Group Study
> > Subject: DTE on FR switch
> >
> > Hi, group:
> >
> > I know it is a stupid question, but I want somebody to clarify it.
> > I just did a rental lab and found the FR switch does not work when I
> pasted
> > the initial config provided by the vendor. Then I entered command "show
> > control serial xxx" and got all messages with "DTE" on the FR switch and
> > "DCE" on the normal FR routers.
> > So, can DTE link be used on the FR switch?
> >
> > TIA
> > dillon
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
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