Thank you again. Here is the detail information about RTS=down
I have 5 routers, and configured the 2520 as Frame Relay Switch. Four 2501
routers connected to it. All other three serial interfaces's singal of 2520
are DCD=up DSR=up DTR=up RTS=up CTS=up, only serial 1's interface status
is DCD=up DSR=up DTR=up RTS=down CTS=up. and I have changed cable and
routers to the s1, The RTS still down. But it did and do work well. So I
want to know "Is RTS meaningless"?
The configuration and show output of 2520's serial 1
R7#sh ru in s1
Building configuration...
Current configuration:
!
interface Serial1
no ip address
no ip directed-broadcast
encapsulation frame-relay
clockrate 125000
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 501 interface Serial0 105
end
R7#
Serial1 is up, line protocol is up
Hardware is HD64570
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 105, LMI stat sent 105, LMI upd sent 0, DCE LMI up
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 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters 00:17:24
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
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
148 packets input, 4350 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
168 packets output, 5832 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=down CTS=up
R7#
R7# sh fr pvc
PVC Statistics for interface Serial0 (Frame Relay DCE)
DLCI = 102, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 41 output pkts 211 in bytes 2624
out bytes 79455 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0 Num Pkts Switched 41
pvc create time 00:51:45, last time pvc status changed 00:51:35
DLCI = 103, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 133 output pkts 102 in bytes 10216
out bytes 7776 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0 Num Pkts Switched
133
pvc create time 00:51:48, last time pvc status changed 00:38:08
DLCI = 105, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial0
input pkts 135 output pkts 321 in bytes 9172
out bytes 31736 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0 Num Pkts Switched
135
pvc create time 00:51:49, last time pvc status changed 00:51:40
PVC Statistics for interface Serial1 (Frame Relay DCE)
DLCI = 501, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial1
input pkts 322 output pkts 135 in bytes 31848
out bytes 9172 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0 Num Pkts Switched
322
pvc create time 00:51:50, last time pvc status changed 00:51:40
====>you can see that serial 1 is working, because it switched 322 packets
PVC Statistics for interface Serial2 (Frame Relay DCE)
DLCI = 201, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial2
input pkts 212 output pkts 42 in bytes 79519
out bytes 2688 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0 Num Pkts Switched
212
pvc create time 00:51:55, last time pvc status changed 00:51:46
PVC Statistics for interface Serial3 (Frame Relay DCE)
DLCI = 301, DLCI USAGE = SWITCHED, PVC STATUS = ACTIVE, INTERFACE = Serial3
input pkts 103 output pkts 134 in bytes 7848
out bytes 10280 dropped pkts 0 in FECN pkts 0
in BECN pkts 0 out FECN pkts 0 out BECN pkts 0
in DE pkts 0 out DE pkts 0
out bcast pkts 0 out bcast bytes 0 Num Pkts Switched
103
pvc create time 00:51:59, last time pvc status changed 00:38:25
R7#
The configuration and show results of 2501's s0:
R5#sh ru
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname R5
!
!
ip subnet-zero
no ip domain-lookup
!
!
!
interface Ethernet0
ip address 11.1.1.1 255.255.0.0
no ip directed-broadcast
no ip route-cache
no ip mroute-cache
!
interface Serial0
ip address 10.10.1.5 255.255.0.0
no ip directed-broadcast
encapsulation frame-relay
no ip route-cache
ip ospf network point-to-multipoint
no ip mroute-cache
frame-relay lmi-type ansi
!
interface Serial1
no ip address
no ip directed-broadcast
no ip route-cache
no ip mroute-cache
shutdown
clockrate 64000
!
router ospf 1
network 10.10.1.5 0.0.0.0 area 0
network 11.1.1.1 0.0.0.0 area 0
!
router bgp 2
no synchronization
neighbor 10.10.1.1 remote-as 2
!
ip classless
!
alias exec i sh ip route
!
line con 0
transport input none
line aux 0
transport input all
line vty 0 4
no login
!
end
R5#
R5#sh in s 0
Serial0 is up, line protocol is up
Hardware is HD64570
Internet address is 10.10.1.5/16
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 332, LMI stat recvd 329, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
Broadcast queue 0/64, broadcasts sent/dropped 111/0, interface broadcasts
110
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/1/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 1000 bits/sec, 1 packets/sec
569 packets input, 20613 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
795 packets output, 48006 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 output buffer failures, 0 output buffers swapped out
6 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
===============> all signals are up (strange)
R5#sh fr map
Serial0 (up): ip 10.10.1.1 dlci 501(0x1F5,0x7C50), dynamic,
broadcast,, status defined, active
R5#sh ip os ne
Neighbor ID Pri State Dead Time Address Interface
10.20.1.1 1 FULL/ - 00:01:37 10.10.1.1 Serial0
=======>> OSPF is working
R5#
----- Original Message -----
From: "Priscilla Oppenheimer"
To:
Sent: Saturday, August 10, 2002 3:20 AM
Subject: Re: Stange thing [7:50911]
> He Shuchen wrote:
> >
> > Thank you Priscilla Oppenheimer and other people here. and I am
> > sorry because English is not my native language.
>
> No problem. I think it's admirable that you can speak English at all.
>
> At the bottom of the box where you type messages, if you are using the Web
> interface, is a button that says Quote. If you click on that button, then
> your message will include the message to which you are responding.
>
> Most of us read these messages in a connectionless, stateless fashion. We
> can't understand messages that don't have any history with them. It's too
> much work to go back and look at previous messages.
>
> > It's a little
> > difficult to read a lot of information in the group. I will
> > notice previous messages before I ask question.
>
> Noticing isn't the problem. Use the Quote button please. That's the point.
> Or if you do GroupStudy via e-mail, then configure your e-mail application
> to include the message to which you are responding. Thanks.
>
> > I configured the 2520 router as Frame Relay switch and
> > connected it to a 2501 with a DTE to DCE v.35 Cross-over cable.
> > It's my lab environment. The 2520 is DCE and 2501 is DTE. The
> > 2520's RTS=down, but 2501's DCD=up DSR=up DTR=up RTS=up
> > CTS=up. It have up for several days. I think it's a hardware
> > problem with the 2520's serial problem. Other interfaces in
> > 2520 are ok. and I'm sure it's not a cable problem because I
> > have used another cable.
> > The IOS is c2500-i-l.121-7.bin.
>
> I think it may be a hardware problem too. It may be a problem with the
2501,
> however. It should assert RTS since it's the DTE side. By doing more
> testing, you can determine if the problem resides with the DTE side not
> asserting RTS or the DCE side not recognizing that RTS has been asserted.
>
> But for now it works, so that's good! Please keep us informed if it
> continues to work. It's an interesting question. Thanks for bringing it to
> our attention.
>
> I'm sorry if my English is too complicated or for any errors. I don't spell
> check anymore now that I use the Web interface. :-)
>
> Priscilla
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=51211&t=50911
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