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William Lijewski
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 Posted: Tue Jul 29, 2003 11:18 pm Post subject: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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William Lijewski
Guest
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| Posted: Tue Jul 29, 2003 11:18 pm Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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What version of the IOS are you running? If I remember right there was some
issue with 11.2 that caused this to happen. If you are running an older
version of the IOS I would recommend upgrading to 12.2 anyway.
Also, take a look at the cable and make sure that none of the pins are bent
on either end.
--
- Bill Lijewski
CCIE#8642
Network Learning Inc
5 Day R&S CCIE Bootcamp Instructor
bill@eccie.com
www.ccbootcamp.com (Cisco Training)
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"mjm" <no_spam@sympatico.ca> wrote in message
news:BBkVa.1626$mv6.405367@news20.bellglobal.com...
| Quote: | I have a cisco 2501 and a 2503 router that I am looking to link together
with a DTE/DCE cable. I can get one of the intefaced to show as being up,
the other just doesn't want to be so kind.
Prouter1 seems to be working fine. It shows:
Interface IP-Address OK? Method Status
Protocol
Ethernet0 192.168.0.210 YES manual up up
Serial0 192.168.1.220 YES manual up up
the configuration is as follows:
prouter1#show cont ser 0
HD unit 0, idb = 0xF7A40, driver structure at 0xFCED8
buffer size 1524 HD unit 0, V.35 DTE cable
prouter1#show int ser 0
Serial0 is up, line protocol is up
Hardware is HD64570
Internet address is 192.168.1.220/24
MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input 00:00:01, output 00:00:15, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 1/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
149 packets input, 3278 bytes, 0 no buffer
Received 146 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
5541 packets output, 138927 bytes, 0 underruns
0 output errors, 0 collisions, 3466 interface resets
0 output buffer failures, 0 output buffers swapped out
5643 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
The second router doesnt seem to want to act as nice. It shows:
Interface IP-Address OK? Method Status
Protocol
Ethernet0 192.168.0.211 YES manual up up
Serial1 192.168.1.221 YES manual up
down
the cable is a cisco cable connecting serial 0 on the 2503 to serial 1 on
the 2501
PRouter2#show cont ser 1
HD unit 1, idb = 0xE5F44, driver structure at 0xEB3D8
buffer size 1524 HD unit 1, V.35 DCE cable, clockrate 56000
PRouter2#show int ser 1
Serial1 is up, line protocol is down
Hardware is HD64570
Internet address is 192.168.1.221/24
MTU 1500 bytes, BW 56 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation HDLC, loopback not set, keepalive set (10 sec)
Last input never, output 00:00:02, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
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
5668 packets output, 125044 bytes, 0 underruns
0 output errors, 0 collisions, 2820 interface resets
0 output buffer failures, 0 output buffers swapped out
5748 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
I might be jumping ahead of myself in trying to get something up and
running. I am only on page 250 of my Cisco CCNA book.. But I am
interested
in getting something running so that I can play with the command and get a
better feel for the IOS I have before I start re-flashing it to a
different
image. Any help would be appreciated.
Matt
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ec
Guest
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| Posted: Wed Jul 30, 2003 7:19 am Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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"jason892" <jason892.rckgd@mail.examnotes.net> wrote in message
news:jason892.rckgd@mail.examnotes.net...
| Quote: |
I don't see a clockrate. I was having the same problem a couple of
weeks ago, and it was because I didn't have a clockrate set.
---
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http://www.QoD.US/i-54.htm
View this thread: http://www.examnotes.net/article1017713.html
jason892-------------------------------------------------------------------- |
----
"PRouter2#show cont ser 1
HD unit 1, idb = 0xE5F44, driver structure at 0xEB3D8
buffer size 1524 HD unit 1, V.35 DCE cable, clockrate 56000
"
There is a clockrate set on the router which needs one, the one with the DCE
interface. |
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mjm
Guest
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| Posted: Wed Jul 30, 2003 8:28 am Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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I am currenly using IOS flash:c2500-is-l_120-19.bin
I found that after a bit of time, the Prouter1 (DTE end) goes down on the
protocol. ie
prouter1>show ip int brief
Interface IP-Address OK? Method Status
Protocol
BRI0 unassigned YES unset administratively down down
BRI0:1 unassigned YES unset administratively down down
BRI0:2 unassigned YES unset administratively down down
Ethernet0 192.168.0.210 YES NVRAM up up
Serial0 192.168.1.220 YES NVRAM up down
Serial1 unassigned YES unset administratively down down
If I go onto prouter2 and do:
PRouter2#conf term
Enter configuration commands, one per line. End with CNTL/Z.
PRouter2(config)#int ser 1
PRouter2(config-if)#clock rate 56000
PRouter2(config-if)#
then the connection goes back up on prouter1.
prouter1>show ip int brief
Interface IP-Address OK? Method Status
Protocol
BRI0 unassigned YES unset administratively down down
BRI0:1 unassigned YES unset administratively down down
BRI0:2 unassigned YES unset administratively down down
Ethernet0 192.168.0.210 YES NVRAM up up
Serial0 192.168.1.220 YES NVRAM up up
Serial1 unassigned YES unset administratively down down
I guess the first question is what is the protocol field refering to? what
would be the fastest way to clear the configuration for the serial ports to
start over again from a clean slate? Would moving to a different IOS help.
I have is loaded right now, but can re-flash it with c,i, is, io, or js
version of IOS (with versions ranging from 11.2-26d to 12.1.20.
The 2500's have 16mb of NVRam and 8mb of flash.
"ec" <no@no.com> wrote in message news:WXFVa.14563$ff.2805@fed1read01...
| Quote: |
"jason892" <jason892.rckgd@mail.examnotes.net> wrote in message
news:jason892.rckgd@mail.examnotes.net...
I don't see a clockrate. I was having the same problem a couple of
weeks ago, and it was because I didn't have a clockrate set.
---
Sign up to get free daily practice questions at:
http://www.QoD.US/i-54.htm
View this thread: http://www.examnotes.net/article1017713.html
jason892--------------------------------------------------------------------
----
jason892's Profile:
http://www.examnotes.net/forums/member.php?action=getinfo&userid=182502
QUOTE from his post:
"PRouter2#show cont ser 1
HD unit 1, idb = 0xE5F44, driver structure at 0xEB3D8
buffer size 1524 HD unit 1, V.35 DCE cable, clockrate 56000
"
There is a clockrate set on the router which needs one, the one with the
DCE
interface.
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Fibre Optic
Guest
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mjm
Guest
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| Posted: Wed Jul 30, 2003 10:18 pm Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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Thanks for the link.. I will give it a try.
"Fibre Optic" <fibre_optic@go2.pl> wrote in message
news:bg8oid$msn$1@atlantis.news.tpi.pl...
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ec
Guest
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| Posted: Thu Jul 31, 2003 10:49 am Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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"Fibre Optic" <fibre_optic@go2.pl> wrote in message
news:bg8oid$msn$1@atlantis.news.tpi.pl...
He doesn't need to use FR to connect two routers back to back though. HDLC
point to point works fine as long as you use a DCE to DTE crossover cable. |
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mjm
Guest
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| Posted: Thu Jul 31, 2003 9:50 pm Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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I gave the cisco example a try and got the two units working with
frame-relay.
i now will have to setup RIP or some other routing, and access lists to get
this to route between the two devices.\
Thanks for all the help that I have gotten.
"ec" <no@no.com> wrote in message news:U72Wa.17994$ff.11193@fed1read01...
| Quote: |
"Fibre Optic" <fibre_optic@go2.pl> wrote in message
news:bg8oid$msn$1@atlantis.news.tpi.pl...
Hello,
if you want to connect two routers back-to-back, please red this
atricle:
http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a0080094a3b.shtml
Thanks,
Fibre Optic
---
Outgoing mail is certified Virus Free.
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Version: 6.0.504 / Virus Database: 302 - Release Date: 7/24/2003
He doesn't need to use FR to connect two routers back to back though. HDLC
point to point works fine as long as you use a DCE to DTE crossover cable.
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Solitary Man
Guest
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| Posted: Thu Aug 28, 2003 11:34 pm Post subject: Re: Cisco 2503 to a 2501 DTE/DCE cross connect problems |
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Static routes are the easiest or 'Gateway of last resort'.
unless you just want to practice your routing Protocols.
"mjm" <no_spam@sympatico.ca> wrote in message
news:9NbWa.1375$qN3.184181@news20.bellglobal.com...
| Quote: | I gave the cisco example a try and got the two units working with
frame-relay.
i now will have to setup RIP or some other routing, and access lists to
get
this to route between the two devices.\
Thanks for all the help that I have gotten.
"ec" <no@no.com> wrote in message news:U72Wa.17994$ff.11193@fed1read01...
"Fibre Optic" <fibre_optic@go2.pl> wrote in message
news:bg8oid$msn$1@atlantis.news.tpi.pl...
Hello,
if you want to connect two routers back-to-back, please red this
atricle:
http://www.cisco.com/en/US/tech/tk713/tk237/technologies_configuration_example09186a0080094a3b.shtml
Thanks,
Fibre Optic
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.504 / Virus Database: 302 - Release Date: 7/24/2003
He doesn't need to use FR to connect two routers back to back though.
HDLC
point to point works fine as long as you use a DCE to DTE crossover
cable.
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