GSR 12008 6 port DS3-SMB line card has problems talking to ADTRAN T3/T1 MUX

Unanswered Question
Mar 11th, 2003
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Scenario:


What I’m trying to do is setup a layer1 to layer 3 connectivity between 1600 T1 router and GSR DS3 line card (6DS3-SMB line card – 6 port packet over DS3) using ADTRAN mx2800 MUX (T3 to T1 MUX) in between.


Here is the Cisco link for line card

http://www.cisco.com/univercd/cc/td/doc/product/core/cis12000/linecard/lc_chan/6587ds3.htm#30706


This ADTRAN MUX splits one DS3 line into 28 DS1 lines.


1600 T1 router <---------->ADTRAN MUX (T1 to T3)<---------------->GSR DS3 line card


Problem:


ADTRAN mux is reporting CAIS error (Carrier side AIS error) on GSR switch. For some reason GSR switch is not sending frames properly to MUX. According to ADTRAN manual and tech support guys, CAIS error is – “The T1 side is receiving all ones from the DS3 side of the network”, which is a GSR line card.



When I setup the MUX for digital and line loop-back, the CKT comes up right away. I'm very positive that there is a problem on GSR switch. I really don’t know what the problem is. There is nothing much to configure on GSR also. All I need is a ping from 1600 router to GSR line card.


Framing on GSR is set to C-bit (also tried for M13)


Used internal clock. (also tried supplying clock from ADTRAN MUX)


Framing on T1 router is set to ESF


Linecode is B8ZS


Used internal clock


In between, MUX will terminate the clock for both DS1 line and DS3 line. So MUX is not generating any clock for DS1 or DS3 network.


This is all I have configured on these 3 boxes.


I need to know if there is anything extra I have to configure on GSR side. I’m attaching related output below (concentrate only on serial 4/1 port).


Any inputs are appreciated and thanks in advance.




GSR configuration:


interface Serial4/1

ip address 200.1.1.1 255.255.255.0

no ip redirects

no ip directed-broadcast

no ip proxy-arp

framing c-bit

clock source internal


show interface serial 4/1


Serial4/1 is up, line protocol is down


Hardware is Packet over DS3

Internet address is 200.1.1.1/24

MTU 4470 bytes, BW 44210 Kbit, DLY 200 usec, rely 213/255, load 1/255

Encapsulation HDLC, crc 16, loopback not set

Keepalive set (10 sec)

Last input never, output 00:00:05, 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 parity

1091553121 input errors, 0 CRC, 25926121 frame, 0 overrun, 0 ignored,

1065627000 abort


5782 packets output, 138759 bytes, 0 underruns

0 output errors, 0 applique, 6 interface resets

0 output buffer failures, 0 output buffers swapped out

1 carrier transitions



show controller serial 4/1 shows (I don't have the actual output)


“Line is up”


show diag details


SLOT 4 (RP/LC 4 ): 6 Port Packet over DS3

MAIN: type 47, 800-8378-01 rev F0

Deviation: 0

HW config: 0x00 SW key: 00-00-00

PCA: 73-5453-02 rev B0 ver 3


Design Release 1.0 S/N SAD053105DR


MBUS: MBUS Agent (1) 73-2146-07 rev B0 dev 0


HW version 1.2 S/N CAB0244AICQ


Test hist: 0x00 RMA#: 00-00-00 RMA hist: 0x00


DIAG: Test count: 0x00000000 Test results: 0x00000000


EEPROM contents (hex):


00: 01 00 01 00 49 00 08 62 07 58 00 00 00 00 00 00


10: 43 41 42 30 32 34 34 41 49 43 51 00 00 00 00 00


20: 01 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00


30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


40: 00 2F 01 00 00 49 00 15 4D 02 58 03 00 01 00 00


50: 03 20 00 20 BA 01 78 00 00 00 00 00 00 00 00 00


60: 53 41 44 30 35 33 31 30 35 44 52 00 00 00 00 00


70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


A0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00


B0: 00 00 00 00 00 00 00 00 00


FRU: Linecard/Module: 6DS3-SMB-B=


Route Memory: MEM-GRP/LC-256=


Packet Memory: MEM-LC-PKT-128=


L3 Engine: 0 - OC12 (622 Mbps)


MBUS Agent Software version 01.50 (RAM) (ROM version is 02.17)


ROM Monitor version 10.09


Fabric Downloader version used 17.02 (ROM version is 16.02)


Primary clock is CSC 1


Board is analyzed


Flags: 0x4


Board State is Line Card Enabled (IOS RUN )


Insertion time: 00:00:06 (16:11:14 ago)


DRAM size: 268435456 bytes


FrFab SDRAM size: 67108864 bytes


ToFab SDRAM size: 67108864 bytes


0 crashes since restart




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mark-obrien Tue, 03/11/2003 - 12:48
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Bad news. The link you sent describes a packet-over-DS3 interface. This interface will not work with the multiplexer. The multiplexer will attempt to break the DS3 down to 28 T1s. This is called "channelization". However, this Cisco DS3 interface is not channelized, so the T1 that is being passed from the 1600 to the multiplexer is not usable by the DS3 GSR interface. To use a T1 that is multiplexed in a DS3, you will need a channelized DS3 GSR interface. I know this exists for the 7500 series, but I don't know about the GSR series.


I'm just the messenger...


Mark

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