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serial int down/down

gaby_978

i just received my cables for my lab.
i have 2 2610 router and a 2924 switch.
i have the ehternet ports on the router connected thru the switch. i already configure them and i am able to ping between them.
i have the serial port connected with a V.35 DTE cable with a male DB60. i have config the ip address, encap ppp, and tried it with clock rate and without and the serial ports wont come up.
any ideas?

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Comments

redgren

Did you put the "clock rate" on the router connected to the DCE end of the cable? You only set it on the router at the DCE end of the cable.

r_durant

Make sure the DCE end of the cable is connected to the router with the clock rate set...

Make sure you do a no shut on the interfaces...

Have you configured the routers with a username and password?
On routerA
username routerB password sameonboth

On routerB
username routerA password sameonboth

APA

Could you post your config please so we can get a better idea of what you have done?

gaby_978

router1#sh run int Serial0/0
Building configuration...

Current configuration : 132 bytes
!
interface Serial0/0
description wan connection1
ip address 10.10.10.1 255.255.255.252
encapsulation ppp
clock rate 64000
end

router2#sh run int Serial0/0
Building configuration...

Current configuration : 102 bytes
!
interface Serial0/0
ip address 10.10.10.2 255.255.255.252
encapsulation ppp
clockrate 64000
end

gaby_978

i remove the clock rate from router2. the dce cable i have it plug into router1

dtlokee

Do you have an output of "sho interface serial 0/0" from both routers you can share?

gaby_978

router1#sh int s0/0
Serial0/0 is down, line protocol is down
Hardware is PowerQUICC Serial
Description: wan connection1
Internet address is 10.10.10.1/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Closed, loopback not set
Keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters 01:44:33
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1158 kilobits/sec
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, 45 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=down RTS=down CTS=up
==============================================================
router2#sh int s0/0
Serial0/0 is down, line protocol is down
Hardware is PowerQUICC Serial
Description: wan connection1
Internet address is 10.10.10.2/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, LCP Closed, loopback not set
Keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters 01:58:56
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/0/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 1158 kilobits/sec
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, 54 interface resets
0 output buffer failures, 0 output buffers swapped out
2 carrier transitions
DCD=up DSR=up DTR=down RTS=down CTS=up

dtlokee

Note the last line, you have a cabling problem, either it's a bad interface, or the cable is no good.

The line shoud say:

DCD=up DSR=up DTR=up RTS=up CTS=up

What type of cable are you using?

gaby_978

cables
Cisco DB60 to V.35 Female
Cisco DB60 to V.35 Male

cards
CISCO MODULE WIC-1T WIC 1T

i tried 2 sets of cable.

APA

definately a physical problem gaby as dlotkee pointed out........

Legit WIC's right??? Have you used them before or is this the first time???

gaby_978

first time. just got them a few days ago. brand new seal. Never used as far as i can tell

APA

FYI.......

DCE router.
Serial0 is down, Line Protocol is down
DCD=up DSR=up DTR=down RTS=down CTS=up
This indicates that the DTE router is down or a media problem.

DTE router connected via a WAN link.
Serial0 is down, Line Protocol is down
DCD=down DSR=down DTR=up RTS=up CTS=down
This indicates a problem with the media or the CSU/DSU.

Two routers connected via crossover cable.
Serial0 is down, Line Protocol is down
DCD=down DSR=down DTR=up RTS=up CTS=down
This indicates that the DCE router is down or a media problem.

gaby_978

ok do i have to anything special for the cards after i put them in. as far as i know the cable and cards are new. could it be the routers. any sugestions.

i just admin down serial0/0 on both router and conf serial0/1 on both. 2 different wic cards and different sets of cables and still same thing

APA

Are they genuine Cisco WIC's???

gaby_978

OK FELLAS I GOT IT UP AND RUNNING. THE PROBLEM WAS WITH THE CABLE LIKE ALL OF YOU SAID. I DIDNT REALIZE THAT THE CABLE WILL GO IN EVEN IF ITS UPSIDE DOWN.

THANK YOU ALL

phreak

You beat me to the post. I was going to say check to ensure the cable is in correctly. Unfortunately you can put them in upside down. I have seen the tiny pins get destroyed in the cables before, so be careful.

mwgood

Cards are probably OK, or they wouldn't be showing in the config.

Probably not routers. Most likely bad cable(s).

Try a crossover serial cable.

dtlokee

gaby_978 wrote:

OK FELLAS I GOT IT UP AND RUNNING. THE PROBLEM WAS WITH THE CABLE LIKE ALL OF YOU SAID. I DIDNT REALIZE THAT THE CABLE WILL GO IN EVEN IF ITS UPSIDE DOWN.

THANK YOU ALL

If I had a nickle for each time a student did that I'd have atleast $25.00

APA

Good stuff

hectorjhrdz

layer 1 problem.

int serial damaged or cabling issues

when the serial interface is damaged you get that result and also when the serial is not receiving signal

spareparts

God bless you guys. I made the same mistake with the serial cable being in upside down. I have been trying to comlete lab for hours.