Thousands of Input Errors 1

[derekwa]

Hello,
I am having problems. There is a full ds1 point to point between two offices, this line is 100% data. I am getting thousands of Input and CRC errors on both sides of this circuit. The LEC has looped up both CSU's and ran clean to both. I can only assume there is a timing issue. There is a cisco 1710 w/ WIC on one end and a 2600 with WIC on the other. Can anyone help me? I will post the running configs of both devices. Thanks in advance.

Phoenix#sh run
Building configuration...

Current configuration : 2123 bytes
!
version 12.3
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime localtime
service password-encryption
!
hostname
!
boot-start-marker
boot-end-marker
!
logging buffered 10000 debugging
enable secret 5 $1$SHzF$lQtBNRimGGrS89vvHtmPx/
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no ip domain lookup
no ftp-server write-enable
!
!
!
controller T1 0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/2
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/3
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
class-map match-all voice-priority
match access-group 150
!
!
policy-map POLICY1
class voice-priority
priority 384

#sh int serial0/1:0
Serial0/1:0 is up, line protocol is up
Hardware is PowerQUICC Serial
Description: T1 Link to x
Interface is unnumbered. Using address of FastEthernet0/0 (19
MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,
reliability 194/255, txload 18/255, rxload 10/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:13:58
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/12/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 768 kilobits/sec
5 minute input rate 62000 bits/sec, 99 packets/sec
5 minute output rate 114000 bits/sec, 102 packets/sec
43210 packets input, 3411102 bytes, 0 no buffer
Received 92 broadcasts, 0 runts, 0 giants, 0 throttles
81949 input errors, 5969 CRC, 75913 frame, 0 overrun, 0 ig
45803 packets output, 10311522 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
2 carrier transitions
Timeslot(s) Used:1-24, SCC: 3, Transmitter delay is 0 flags


----------------------------------------------------------

#sh run
Building configuration...

Current configuration : 981 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$ie9.$Nv.EcP87lMD2LcHAcCk/W0
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no ip domain lookup
no ftp-server write-enable
!
!
!
class-map match-all voice-priority
match access-group 150
!
!
policy-map POLICY1
class voice-priority
priority 512
class class-default
fair-queue
!
!
!
interface FastEthernet0
ip address 192.168.3.253 255.255.255.0
ip helper-address 192.168.3.211
speed auto
!
interface Serial0
ip unnumbered FastEthernet0
service-policy output POLICY1
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
no ip http server
!
!
line con 0
password 7 141A421918030A2C77
login
line aux 0
password 7 12145505060C2C0379
line vty 0 4
password 7 09411E1B0D02371558
login
!
!
end

#sh int s0
Serial0 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
Interface is unnumbered. Using address of FastEthernet0 (192.168.3.253)
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 170/255, txload 10/255, rxload 21/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1w1d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 2718
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
Conversations 0/10/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 646 kilobits/sec
5 minute input rate 131000 bits/sec, 114 packets/sec
5 minute output rate 65000 bits/sec, 115 packets/sec
10109894 packets input, 3708267975 bytes, 0 no buffer
Received 79505 broadcasts, 0 runts, 18 giants, 0 throttles
60819352 input errors, 5985118 CRC, 54592361 frame, 0 overrun, 0 ignored,
41864 abort
9221664 packets output, 1056857177 bytes, 0 underruns
0 output errors, 0 collisions, 717 interface resets
0 output buffer failures, 0 output buffers swapped out
424 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

 

[JOAMON]

What model WIC's in the routers? Please post interface information of the 2600. Is one side of your connection configured to do clocking? Service providers usually provide no clocking on point to point circuits.

 

[derekwa]

Joamon,
I do no know if one of the sides is providing clocking. I am kinda green at circuit turnup with cisco routers. I posted two interfaces above, the serial0/1:0 is the 2600 side and serial 0 is the 1700. I will find out what WIC models are. Any help would be greatly apreciated.

 

[JOAMON]

Can see the show interface from 2600 but not the output from the configuration.

 

[derekwa]

As Requested: Thanks for your help.



Phoenix#sh run
Building configuration...

Current configuration : 2123 bytes
!
version 12.3
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime localtime
service password-encryption
!
hostname Phoenix
!
boot-start-marker
boot-end-marker
!
logging buffered 10000 debugging
enable secret 5 $1$SHzF$lQtBNRimGGrS89vvHtmPx/
!
no network-clock-participate slot 1
no network-clock-participate wic 0
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no ip domain lookup
no ftp-server write-enable
!
!
!
controller T1 0/0
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/2
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
controller T1 0/3
framing esf
linecode b8zs
channel-group 0 timeslots 1-24 speed 64
!
class-map match-all voice-priority
match access-group 150
!
!
policy-map POLICY1
class voice-priority
priority 384
class class-default
fair-queue
!
!
!
interface FastEthernet0/0
ip address 192.168.0.251 255.255.255.0
no ip redirects
duplex auto
speed auto
!
interface Serial0/0:0
description T1 Link to Inflow
ip unnumbered FastEthernet0/0
service-policy output POLICY1
tx-ring-limit 4
tx-queue-limit 4
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1:0
description T1 Link to Glendale
ip unnumbered FastEthernet0/0
service-policy output POLICY1
tx-ring-limit 4
tx-queue-limit 4
!
interface Serial0/2:0
ip unnumbered FastEthernet0/0
service-policy output POLICY1
tx-ring-limit 4
tx-queue-limit 4
!
interface Serial0/3:0
ip unnumbered FastEthernet0/0
service-policy output POLICY1
tx-ring-limit 4
tx-queue-limit 4
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.0.254
ip route 192.168.1.0 255.255.255.0 192.168.0.253
ip route 192.168.2.0 255.255.255.0 192.168.0.253
ip route 192.168.3.0 255.255.255.0 Serial0/1:0
no ip http server
!
!
line con 0
password 7 011C01160802150301424A
login
line aux 0
password 7 12145505060C2C0379
line vty 0 4
password 7 141815195F0D3927042637
login
!
!
!
end

 

[JOAMON]

First of all you need the following on one of the serial interfaces.
service-module t1 clock source internal
I would also suggest using encapsulation ppp on both serial interfaces.
Also please note the bandwidth on both of the show interfaces. The 1710 show 1544 which usually indicates B8ZS line coding and the 2600 is showing 1536 which usually indicates AMI (robbed bit format)line coding. I have seen this before with qwest and suggest the you reload both routers at the same time and then look at the show interface and see if the bandwidth corrects itself. Qwest equipment or other is supposed to automatically adjust line coding and a reset on both ends may help. This mismatch is where your crc errors are comming from. If after a reset problem still persists report it to your service provider.

 

[jpm121]

Just to clarify - I think you set the clock source internal on the 2600 side of the circuit, and on the 1710 you set clock source line. That way the 2600 provides timing for the circuit.

Also some DS1 (point to point) providers require HDCL encapsulation -- our SBC circuit had to be set up that way, PPP wouldn't work, for whatever reason.

 

[derekwa]

I fixed this problem, thanks to all of your help. I did end up setting the clocking to internal on the 2600 and left the 1700 as it was. The errors cleared up as soon as this change was made. Thanks to all for your help!