CISCO 2900 Series HWIC Serial 1T & 2T DOWN DOWN

[neosam]

Hi Everyone

I need help urgently.

I have cisco 2901 and 2911 routers which are fresh out the box as well as 1T/2T HWIC cards, also new, installed on these routers for Diginet. The routers are running the standard c2900-universalk9-mz.SPA.154-3.M3.bin image.

The routers detect the HWIC cards on sh ip int as well as sh int and other ways however when connecting to a live Diginet line the Physical and Protocol status remains as down down, even when port is no shut and configured. 

Ive ruled out that the issue may not be the hwic cards or cables but possibly ios image?

What ive done is upgrade the ios image to the following:

c2900-universalk9-mz.SPA.156-1.T1.bin

c2900-universalk9-mz.SPA.157-3.M2.bin

One on the 2901 and the other on the 2911.

So far i am not able to test the solution as i can only test on a live Diginet medium which is only available at my client. 

Please advise if youve come across this issue and let me know if im missing something.

Also please note on the standard image hostname comes up as "yourname", doesnt seem right but then again i havent worked on too many new cisco routers to validate.

Here are a few sh outputs

Router>sh ip int br
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
GigabitEthernet0/2 unassigned YES NVRAM administratively down down
Serial0/0/0 10.10.10.2 YES manual down down
Router>

Router>sh int s0/0/0
Serial0/0/0 is down, line protocol is down
Hardware is WIC MBRD Serial
Internet address is 10.10.10.2/30
MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
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 IP multicasts)
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, 132 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=up DTR=down RTS=down CTS=up

Router>sh controllers s0/0/0
Interface Serial0/0/0
Hardware is SCC
DCE V.36 (RS-449), clock rate 2000000

idb at 0x21B8BCA0, driver data structure at 0x3DEAAD04
wic_info 0x21B8CBB0

WIC Serial Global Registers: (0x10890000)
----------------------------
sti_errintr_en (0004): 0x00000000 scc_ctrl_regs (1004): 0x0020
mgmt_intr_status (1010): 0x0010 netio_intr_status (1012): 0x0000
mgmt_intr_enable (1020): 0x00CA netio_intr_enable (1022): 0x0001
timer_0_7_enable (1024): 0x0000 timer_16_19_enable (1026): 0x0000
timer_0_1_program (1030): 0x0000 timer_2_3_program (1032): 0x0000
timer_4_5_program (1034): 0x0000 timer_6_7_program (1036): 0x0000
timer_16_program (1040): 0x0000 timer_17_program (1042): 0x0000
timer_18_program (1044): 0x0000 timer_19_program (1046): 0x0000

WIC Serial SCC Registers: (0)
----------------------------
ch_mode_cfg (1100): 0x08019031 ch_flag_cfg (1104): 0x007E
ch_flwctrl_cfg (1108): 0x0000 ch_intr_enable (110C): 0x09FF
ch_cmd_stat (110E): 0x0048

WIC Serial DMA Registers:
-------------------------
Rx ring_start_ptr (2000): 0x0E913180 Rx ring_mask_index (2004): 0x00F80000
internal_desc_stat (2008): 0x0400060C internal_buff_addr (200C): 0x0E9330E0
internal_context (2010): 0x00000000 internal_fifo_data (2014): 0x0E9330E0

Tx ring_start_ptr (2200): 0x0E915080 Tx ring_mask_index (2204): 0x03F80000
internal_desc_stat (2208): 0x00000000 internal_buff_addr (220C): 0x00000000
internal_context (2210): 0x00000001 internal_fifo_data (2214): 0x00000000

WIC Serial Interface Registers:
-------------------------------
intf_ctrl (3000): 0x1001 modem_ctrl (3002): 0xE158
flow_ctrl (3004): 0x7000 brg dvdr (3006): 0x0010

WIC TDM/FREQ Counter Registers:
--------------------------------
tdm_control (3100): 0x0000 tdm_a_8k_divider (3102): 0x0000
tdm_b_8k_divider (3104): 0x0000
freq_count_port_sel (310A): 0 freq_count (310C): 1352904

TDM Control Registers:
----------------------
tmdsw_ctl (addr 0x108B0040): 0x39A5A18B
vmcr[0] (addr 0x108B0060): 0x3B71F3ED
vmcr[1] (addr 0x108B0064): 0x3B71F3ED
vmcr[2] (addr 0x108B0068): 0x3B71F3ED
vmcr[3] (addr 0x108B006C): 0x3B71F3ED
ntr_cr0 (addr 0x108B0078): 0x3B71F3ED
ntr_cr1 (addr 0x108B0080): 0x3B71F3ED
tpllr_cr (addr 0x108B0088): 0x3B71F3ED
sm_tdm_cr (addr 0x108B0070): 0x3B71F3ED
pvdm_tdm_cr (addr 0x108B0074): 0x3B71F3ED

0 input aborts on receiving flag sequence
0 throttles, 0 enables
0 overruns
0 transmitter underruns
0 transmitter CTS losts
0 rxintr, 0 txintr, 0 rxerr, 0 txerr
0 tx_abort 0 tx_reset

tx_limited = 0(128) tx_count = 0
idb at 0x21B8BCA0, driver data structure at 0x3DEAAD04
Receive Ring
rxr head (0)(0x0E913180), rxr tail (0)(0x0E913180)

Other info to note, the HWIC card does not work on 1800 router, and the WIC card from a 1800 router did not work on the 2900 series routers both routers configured equally.

[marce1000]

 - Ref : https://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/ic/hardware/installation/guide/oview_ic.html#37888 , the particular HWIC cards do not seem supported on the 2900

 M.

[Richard Burts]

It is an interesting suggestion that the HWIC is not supported. But if that were the issue I wonder if the original poster would have gotten this output

Router>sh controllers s0/0/0
Interface Serial0/0/0
Hardware is SCC
DCE V.36 (RS-449), clock rate 2000000

I am interested in the fact that it has a clock rate. Is that perhaps from the configuration, or did the interface learn that dynamically? Seeing the router configuration might be helpful.

[marce1000]

- Well then at least the particular document is incorrect.
M.

[neosam]

Hi guys

Thanks so much for your timely responses, what an oddity.

So i got like to like dce dte serial cables and continued to test on the same devices, to my surprise:

Router>sh ip int br
Interface IP-Address OK? Method Status Prot ocol
Embedded-Service-Engine0/0 unassigned YES unset administratively down down
GigabitEthernet0/0 unassigned YES unset administratively down down
GigabitEthernet0/1 unassigned YES unset administratively down down
Serial0/0/0 unassigned YES unset up up
Serial0/0/1 unassigned YES unset administratively down down
Router>sh contr
Router>sh controll
Router>sh controllers s0/0/0
Interface Serial0/0/0
Hardware is SCC
DTE V.35
Clock Freq detected Rx clk/Tx clk 1932762/1932762 (+-10%)

idb at 0x3DD44A78, driver data structure at 0x219EFE50
wic_info 0x3DD45988

WIC Serial Global Registers: (0x10890000)
----------------------------
sti_errintr_en (0004): 0x00000000 scc_ctrl_regs (1004): 0x0020
mgmt_intr_status (1010): 0x0010 netio_intr_status (1012): 0x0000
mgmt_intr_enable (1020): 0x00CA netio_intr_enable (1022): 0x0001
timer_0_7_enable (1024): 0x0000 timer_16_19_enable (1026): 0x0000
timer_0_1_program (1030): 0x0000 timer_2_3_program (1032): 0x0000
timer_4_5_program (1034): 0x0000 timer_6_7_program (1036): 0x0000
timer_16_program (1040): 0x0000 timer_17_program (1042): 0x0000
timer_18_program (1044): 0x0000 timer_19_program (1046): 0x0000

WIC Serial SCC Registers: (0)
----------------------------
ch_mode_cfg (1100): 0x08019031 ch_flag_cfg (1104): 0x007E

Router>sh int s0/0/0
Serial0/0/0 is up, line protocol is up
Hardware is WIC MBRD Serial
MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input 00:00:08, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
250 packets input, 22900 bytes, 0 no buffer
Received 250 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
242 packets output, 19355 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
7 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

Router>

These routers support WIC,HWIC,EHWIC cards

No the routers are not configured

This leads me to wonder then could it be that the compatibility issue lies with the Diginet medium? if so then how so as the same lines are currently well and functional on cisco 1800 series routers? What am i missing??

[paul driver]

Hello

As the router show its the DCE using HDLC then apply a clock rate and possible disable lmi keepalive and test again

int ser0/0/0
no keepalive
clock rate xxxxx

[Richard Burts]

I am somewhat confused. In the original post you tell us "So far i am not able to test the solution as i can only test on a live Diginet medium which is only available at my client." So are the outputs in the original post generated when connected to Diginet or when in a test environment?

If the Diginet lines are working correctly on 1800 router could you provide similar outputs from the 1800 router?

[neosam]

Hi Rick

 Went back to the client to test and got a few sh outputs to display. I'm not sure however I'm leaning towards diagnosing as a clocking issue? though still not understanding why its not affecting older routers which are currently onsite. Im not able in that regard to change clock rate as my router is DTE, so back to square 1.

Please consider the following sh output results:

Current 100% working 2800 series router onsite (to be replaced if solution is found)

#sh controllers s0/3/0
Interface Serial0/3/0
Hardware is GT96K
DTE V.11 (X.21) TX and RX clocks detected.
idb at 0x671EA6C4, driver data structure at 0x671EBC00
wic_info 0x671EC224
Physical Port 1, SCC Num 1
MPSC Registers:
MMCR_L=0x000304C0, MMCR_H=0x00000000, MPCR=0x00000000
CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000
CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000
CHR9=0x00000000, CHR10=0x00003008
SDMA Registers:
SDC=0x00002201, SDCM=0x00000080, SGC=0x0000C000
CRDP=0x162FB8C0, CTDP=0x162FBD10, FTDB=0x162FBD10
Main Routing Register=0x0003FFC7 BRG Conf Register=0x00480000
Rx Clk Routing Register=0x76543280 Tx Clk Routing Register=0x76543290

interface Serial0/3/0 config
description xxxx
bandwidth 512
ip address 1xx.3x.8x.2x 255.255.255.254
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip flow egress
no cdp enable
max-reserved-bandwidth 100
!

#sh int s0/3/0
Serial0/3/0 is up, line protocol is down
Hardware is GT96K Serial
Description: xxx
Internet address is xxx
MTU 1500 bytes, BW 512 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
CRC checking enabled
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1148817
Queueing strategy: weighted fair
Output queue: 0/1000/64/1148817 (size/max total/threshold/drops)
Conversations 0/74/256 (active/max active/max total)
Reserved Conversations 0/0 (allocated/max allocated)
Available Bandwidth 512 kilobits/sec
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
2589653 packets input, 1486868216 bytes, 0 no buffer
Received 107941 broadcasts, 0 runts, 1 giants, 0 throttles
32 input errors, 20 CRC, 0 frame, 2 overrun, 0 ignored, 9 abort
3231634 packets output, 1403368475 bytes, 0 underruns
0 output errors, 0 collisions, 189 interface resets
288 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
19 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

My test router cisco 2901 

Router#sh controllers s0/0/0
Interface Serial0/0/0
Hardware is SCC
DTE V.36 (RS-449)
Clock Freq detected Rx clk/Tx clk 512832/0 ? (+-10%)

Router#sh int s0/0/0
Serial0/0/0 is down, line protocol is down
Hardware is WIC MBRD Serial
Description: xxxx
Internet address is xxxx
MTU 1500 bytes, BW 512 Kbit/sec, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, loopback not set
Keepalive set (10 sec)
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
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 IP multicasts)
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, 6 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=down DSR=down DTR=up RTS=up CTS=up ???

Router#sh ip int br
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
Serial0/0/0 x.x.x.x YES manual down down
Router#

System image file is "flash0:c2900-universalk9-mz.SPA.154-3.M3.bin"

Ive attached an image of the NTU modem the routers are interfacing with if that will help in anyway.

[neosam]

Buat also actually if it was just a clocking issue we would only have logical status of interface in down mode?

[Richard Burts]

Thanks for the additional information. I am still confused. In the documentation that you post for the 8110 I do not see anything that indicates that it supports HDLC protocol. And in your recent response the serial interface configuration does not include the command for using HDLC but the output of show interface does indicate that it is using HDLC.

In looking at the output in your original post the 2900 has this

Router>sh controllers s0/0/0
Interface Serial0/0/0
Hardware is SCC
DCE V.36 (RS-449), clock rate 2000000

In what you identify as the working router it has this

#sh controllers s0/3/0
Interface Serial0/3/0
Hardware is GT96K
DTE V.11 (X.21) TX and RX clocks detected.

How is one DCE while the other is DTE?

[marce1000]

                >Current 100% working 2800 series router onsite (to be replaced if solution is found)

                          You should validate the info below  with Cisco or authorized reseller :

 https://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/ic/hardware/installation/guide/oview_ic.html#37888

 M.

[mahmoud youssef]

Have you find a solution yet?.. Cause I am experincing the same problem with 2901 router HWIC-2T port.

It always give me down/down

[Richard Burts]

We do not yet have enough information to offer you good advice. Please tell us more about your router. Physically what is connected to your serial card? It would be helpful if we could see the router configuration (if not the complete show run then at least all the parts that relate to the serial connection). Also please post the output of these commands

show interface for the serial interface

show controller for the serial controller.