Clock Rate issue 2

[zaradell]

Good afternoon to you all

I´m having a problem setting my DCE router´s clock rate. I have a Cisco 1841 with IOS c1841-ipbase-mz.123-14.T5.bin.

I have another router working as DTE connected to my serial 0/1/0. I´m trying to establish a clock rate of 1,5Mbps (1536000) and for some reason it doesn´t work. I´m able to establish a clock rate of 256000 and 512000 but that´s all.
Any other clock rate value and my serial 0/1/0 goes up/down.

Here´s my interface configuration:

interface Serial0/1/0
ip address 192.168.190.129 255.255.255.248
ip nat inside
encapsulation ppp
load-interval 30
clockrate 256000

Any suggestions?

Thkx

 

[burtsbees]

Do you have a CCO login? I would check the Bug Tool Kit or raise a case with TAC. This definitely looks like a bug. Are there any other WICs you can try, or can you put the WIC into a different router? It's either a bug in the IOS or a hardware problem---I have set the clock rate on 1.536MBps asynch WICs to 4000000 (overclocked...is that a word?lol) many times with no problems. Also, try a different encaps for grins (HDLC) rather than PPP. Worth a try...

Burt

 

[zaradell]

I have tried HDLC for test purposes...the exact same thing...above 512000 no dice.

 

[zaradell]

Ok

I´ve tried updating the IOS to c1841-ipbase-mz.124-1c.bin and still nothing...

At this point I´m completly stumped...I have no idea what to try...at this point I´m regarding the possibility of replacing my WIC WAN card.

Does anybody have any other sugestions?

 

[Minue]

Hello
Don't you have an old 2500 or 2600 that you can try.This is really strange.Also consider trying HDLC.Is your card a WIC-1T?Please post a show diag/show inventory and show controllers.Also confirm that you are using a V35 crossover cable.
Regards

 

[zaradell]

Show diag:

Slot 0:
C1841 2FE 2SLOT Mainboard Port adapter, 4 ports
Port adapter is analyzed
Port adapter insertion time unknown
EEPROM contents at hardware discovery:
Chassis MAC Address : 0015.f976.7e50
MAC Address block size : 34
PCB Serial Number : FOC094301MF
Hardware Revision : 5.0
Part Number : 73-8191-05
Board Revision : B0
Top Assy. Part Number : 800-23434-02
Deviation Number : 0
Fab Version : 04
CLEI Code : IPM7F00CRB
RMA Test History : 00
RMA Number : 0-0-0-0
RMA History : 00
Product (FRU) Number : CISCO1841
Version Identifier : V01
Processor type : 86
Chassis Serial Number : FCZ094814DD
EEPROM format version 4
EEPROM contents (hex):
0x00: 04 FF C3 06 00 15 F9 76 7E 50 43 00 22 C1 8B 46
0x10: 4F 43 30 39 34 33 30 31 4D 46 40 04 1B 41 05 00
0x20: 82 49 1F FF 05 42 42 30 C0 46 03 20 00 5B 8A 02
0x30: 88 00 00 00 00 02 04 C6 8A 49 50 4D 37 46 30 30
0x40: 43 52 42 03 00 81 00 00 00 00 04 00 CB 89 43 49
0x50: 53 43 4F 31 38 34 31 89 56 30 31 20 D9 02 C1 40
0x60: 09 86 C2 8B 46 43 5A 30 39 34 38 31 34 44 44 FF
0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x80: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x90: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0xA0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0xB0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0xC0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0xD0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0xE0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0xF0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x100: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x110: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x120: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x130: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x140: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x150: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x160: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x170: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x180: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x190: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x1A0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x1B0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x1C0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x1D0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x1E0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x1F0: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

WIC/HWIC Slot 0:
Serial 1T WAN daughter card
Hardware revision 1.0 Board revision B0
Serial number 33435709 Part number 800-01514-02
FRU Part Number WIC-1T=

Test history 0x0 RMA number 00-00-00
Connector type Wan Module
EEPROM format version 1
EEPROM contents (hex):
0x20: 01 02 01 00 01 FE 30 3D 50 05 EA 02 00 00 00 00
0x30: 58 00 00 00 05 04 16 01 FF FF FF FF FF FF FF FF

WIC/HWIC Slot 1:
Serial 1T WAN daughter card
Hardware revision 1.0 Board revision L0
Serial number 25961293 Part number 800-01514-01
FRU Part Number WIC-1T=

Test history 0x0 RMA number 00-00-00
Connector type Wan Module
EEPROM format version 1
EEPROM contents (hex):
0x20: 01 02 01 00 01 8C 23 4D 50 05 EA 01 00 00 00 00
0x30: A8 00 00 00 01 09 26 01 FF FF FF FF FF FF FF FF

 

[zaradell]

show inventory:

NAME: "1841 chassis", DESCR: "1841 chassis, Hw Serial#: 2740614363, Hw Revision: 5.0"
PID: CISCO1841 , VID: V01 , SN: FCZ094814DD

NAME: "C1841 Motherboard with 2 Fast Ethernet", DESCR: "C1841 Motherboard with 2 Fast Ethernet"
PID: CISCO1841 , VID: 5.0, SN: FCZ094814DD

NAME: "WIC/HWIC 0", DESCR: "WAN Interface Card - Serial (1T)"
PID: WIC-1T= , VID: 1.0, SN: 33435709

NAME: "WIC/HWIC 1", DESCR: "WAN Interface Card - Serial (1T)"
PID: WIC-1T= , VID: 1.0, SN: 25961293

 

[zaradell]

As for the DTE cable, keep in mind that both routers can communicate with each other as long as the clock rate is defined with 256000 or 512000.

So I don´t think this is a cabling problem.

 

[Minue]

Hello
If the cable is V35 and working OK.The last thing to try is changing around the WIC-1T or trying another router.
Regards

 

[burtsbees]

Yeah---you have 2 WIC-1T cards...does it do it on both???

Burt

 

[zaradell]

Well

I must admit defeat...I finally convinced the transmission team to allow me to migrate the communications to the Fastethernet card...now it´s working fine.

I just feel bummed out because I really wanted to know why this happened. I manage over 1000 Cisco equipments on a daily basis and this is the first time I ever saw this happening...but I guess the client isn´t there to satisfy my curiosity!

Thkx you all for your attention.

 

[burtsbees]

I would say it is a faulty WIC card. If you have another 1800/2800/2600/1700/3600, why don't you put one card in each and find out? I'm curious enough to come out where you are and do it for you!lol

Burt