02-23-2006 10:33 AM - edited 03-03-2019 11:50 AM
Amateur here. I'm pre-configuring two routers (1721 WIC-DSU-T1 - 7204's PA-MC-4T1) prior to shipping to remote location for a full T1. getting an alarm on WIC-1DSU-T1 and no LED on Port on the 7204. What are the most common causes? Saw related email regarding crossover cable however int/cont on both sides show down. Here are the configs:
7204
Serial3/0:0 is down, line protocol is down
Hardware is Multichannel T1
Description: T1 to Newport Financial id:
Internet address is 10.1.5.2/24
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, crc 16, Data non-inverted
Keepalive set (10 sec)
LCP Closed
Closed: CDPCP
Last input never, output never, output hang never
Last clearing of "show interface" counters 1d14h
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
Queueing strategy: random early detection(RED)
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, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
1 carrier transitions
alarm present
Timeslot(s) Used:1-24, subrate: 64Kb/s, transmit delay is 0 flags
1721
Serial0 is down, line protocol is down
Hardware is PQUICC with Fractional T1 CSU/DSU
Internet address is 10.1.5.1/24
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 00:30:33
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, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=up DTR=up RTS=up CTS=down
might the fact LCP/cdpcp shows closed be the issue or does that open only when line comes up?
thanks for any help..
Solved! Go to Solution.
02-23-2006 12:37 PM
A couple of things to look at. The issue lies in layer one (Physical layer). How are you connecting these two routers together? Are they back to back, if so you will have to use a T-1 cross over cable. (Pairs 12,45 to pairs 45,12... socondly, did you configure the controller T-1 correclty (It may be under the service-module T-1 of the interface). That needs to be set up for coding/framing, LBO, timing etc... Once these parameters are set then you should get LED's on the WIC cards and you should at least get an Up/Down. From this point you need to look at the remainder of the config....
02-23-2006 02:36 PM
Hello,
To start you can remove the PPP encap from both interfaces - get a good physical link up first then continue with your configuration. What alarm are you getting on the CSU? If you're not using a T1 cross-over the signaling won't align correctly and you will have a down condition - as well ass any other physical layer type issues impeding the connectivity.
1) Keep it as simple as possible
2) Verify CSU/DSU Configurations (ensure 1 side's timing is set to internal - with your x-over connection)
3) Verify Physical layer connectivity
4) Finish config
Hope this helps.
Regards,
James
02-23-2006 12:37 PM
A couple of things to look at. The issue lies in layer one (Physical layer). How are you connecting these two routers together? Are they back to back, if so you will have to use a T-1 cross over cable. (Pairs 12,45 to pairs 45,12... socondly, did you configure the controller T-1 correclty (It may be under the service-module T-1 of the interface). That needs to be set up for coding/framing, LBO, timing etc... Once these parameters are set then you should get LED's on the WIC cards and you should at least get an Up/Down. From this point you need to look at the remainder of the config....
02-23-2006 02:36 PM
Hello,
To start you can remove the PPP encap from both interfaces - get a good physical link up first then continue with your configuration. What alarm are you getting on the CSU? If you're not using a T1 cross-over the signaling won't align correctly and you will have a down condition - as well ass any other physical layer type issues impeding the connectivity.
1) Keep it as simple as possible
2) Verify CSU/DSU Configurations (ensure 1 side's timing is set to internal - with your x-over connection)
3) Verify Physical layer connectivity
4) Finish config
Hope this helps.
Regards,
James
02-25-2006 02:34 AM
turned out to be the cable - used a T1 cross-over and link came up fine. thanks....
have another problem.i can't ping the fas0 from the se0...i can get from the 3/0:0 on the core router to the se0 on the 1721 i'm trying to configure, however, i can't seem to establish a route that gets through. see below:
****new 1721
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname xxxxxx
!
boot-start-marker
boot-end-marker
!
enable secret xxxxxxx
enable password xxxxxxx
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
!
!
ip name-server xxxxxxx
ip name-server xxxxxxx
ip name-server xxxxxxx
!
no ip cef
!
!
!
!
interface FastEthernet0
ip address xxxxxxxxxx.33 255.255.255.224
speed 100
full-duplex
!
!
ip address 10.1.5.1 255.255.255.0
encapsulation ppp
no ip route-cache
random-detect
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.1.5.2
ip route xxxxxxxxxxxx.97 255.255.255.255 10.1.5.2
no ip http server
****connecting to core 7204
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname xxxxxx
!
aaa new-model
aaa authentication login default local
enable secret xxx
!
username xxxxxx password xxxxxxxx
ip subnet-zero
!
!
ip name-server xxx
ip name-server xxx
ip name-server xxx
ip name-server xxx
!
ip cef
call rsvp-sync
!
controller T1 3/0
framing esf
clock source internal
linecode b8zs
channel-group 0 timeslots 1-24
!
controller T1 3/1
framing esf
linecode b8zs
!
controller T1 3/2
framing esf
linecode b8zs
!
controller T1 3/3
framing esf
linecode b8zs
!
controller T3 4/0
!
interface FastEthernet0/0
ip address xxxxxxxxxxx.65 255.255.255.224 secondary
ip address xxxxxxxxxx.97 255.255.255.224
no ip route-cache
no ip mroute-cache
duplex full
!
interface FastEthernet1/0
ip address xxxxxxxxx.129 255.255.255.224
duplex full
!
interface Serial2/0
ip address 10.1.2.2 255.255.255.0
framing m13
cablelength 10
dsu bandwidth 44210
serial restart-delay 0
!
interface Serial2/1
no ip address
shutdown
framing c-bit
cablelength 10
dsu bandwidth 44210
serial restart-delay 0
!
interface Serial3/0:0
ip address 10.1.5.2 255.255.255.0
encapsulation ppp
random-detect
!
ip classless
ip route 0.0.0.0 0.0.0.0 xxxxxxxxx.1
ip route 0.0.0.0 0.0.0.0 10.1.2.1
ip route xxxxxxxx.1 255.255.255.255 10.1.2.1
ip route xxxxxxxx.33 255.255.255.255 10.1.5.1
no ip http server
!
snmp-server community public RO
snmp-server enable traps tty
!
!
dial-peer cor custom
see any probs? thanks for looking.
02-25-2006 10:44 AM
Sorry, it is difficult to determine what you want to do when you xxx out all the pertenant information.. Can you provide further details??
02-25-2006 11:58 AM
the xxx addresses are all part of the same class c network....only xxx the first three octets of the ip sting...last octet is shown. is this enough? I'd rather not publish my client's ips in this forum. let me know what else i can provide to make it clearer...sorry for the ambiguity. thanks.
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