10-29-2009 09:05 AM - edited 03-04-2019 06:33 AM
I have a 2600 with at NM-4T1-IMA. I am trying to bond 2 t1's from Qwest for our DSL hosting. I have the 2600 configured like Qwest's sample config for my router but we cannot get the ATM interfaces to come up. If qwest loops my t1s they come up. What is strange is the moment we remove ima-group command from the ATM interface the t1s come up.
We are running 12.3 (26) and we have atm ATM-IMA card installed as well. Qwest is configured for ima 1.0. I have tried different clock modes on the ima interface and on the ATM interfaces. Qwest is saying they are configured for EFS/B8ZS.
Here are the relevent parts of the router:
interface ATM1/0
no ip address
no atm ilmi-keepalive
ima-group 0
no scrambling-payload
!
interface ATM1/1
no ip address
no atm ilmi-keepalive
ima-group 0
no scrambling-payload
!
interface ATM1/IMA0
no ip address
no atm ilmi-keepalive
!
interface ATM1/IMA0.132 point-to-point
bandwidth 3072
ip address 10.10.10.41 255.255.255.252
ip nbar protocol-discovery
no ip mroute-cache
atm route-bridged ip
no snmp trap link-status
pvc 1/32
ubr 3072
encapsulation aal5snap
!
!
VRC_E29_32_C2611_xxx_123_CORE#sh atm interface atM 1/0
Interface ATM1/0:
AAL enabled: AAL5 , Maximum VCs: 255, Current VCCs: 0
Maximum Transmit Channels: 0
VCIs per VPI: 1024,
Max. Datagram Size: 4528
PLIM Type: DS1, TX clocking: LINE
Cell-payload scrambling: OFF
0 input, 0 output, 0 IN fast, 0 OUT fast, 0 out drop
Avail bw = 1536
Config. is ACTIVE
VRC_E29_32_C2611_xxx_123_CORE#sh atm interface atM 1/ima0
Interface ATM1/IMA0:
AAL enabled: AAL5 , Maximum VCs: 255, Current VCCs: 0
Maximum Transmit Channels: 0
VCIs per VPI: 1024,
Max. Datagram Size: 4528
PLIM Type: DS1 IMA, TX clocking: IMA ITC
0 input, 0 output, 0 IN fast, 0 OUT fast, 0 out drop
Avail bw = 3072
Config. is ACTIVE
VRC_E29_32_C2611_xxx_123_CORE#sh atm interface atM 1/ima0
Interface ATM1/IMA0:
AAL enabled: AAL5 , Maximum VCs: 255, Current VCCs: 0
Maximum Transmit Channels: 0
VCIs per VPI: 1024,
Max. Datagram Size: 4528
PLIM Type: DS1 IMA, TX clocking: IMA ITC
0 input, 0 output, 0 IN fast, 0 OUT fast, 0 out drop
Avail bw = 3072
Config. is ACTIVE
VRC_E29_32_C2611_xxx_123_CORE# sh ima interface
Interface ATM1/IMA0 is down
Group index is 26
Ne state is startUp, failure status is startUpNe
Active links bitmap 0x0
IMA Group Current Configuration:
Tx/Rx configured links bitmap 0x3/0x3
Tx/Rx minimum required links 1/1
Maximum allowed diff delay is 25ms, Tx frame length 128
Ne Tx clock mode ITC
Test pattern procedure is disabled
IMA Group Current Counters (time elapsed 368 seconds):
0 Ne Failures, 0 Fe Failures, 476 Unavail Secs
IMA Group Total Counters (last 0 15 minute intervals):
0 Ne Failures, 0 Fe Failures, 0 Unavail Secs
IMA link Information:
Link Physical Status NearEnd Rx Status Test Status
---- --------------- ----------------- -----------
ATM1/0 down unusableFailed disabled
ATM1/1 down unusableFailed disabled
Interface ATM1/IMA1 is down
Group index is 45
Ne state is notConfigured, failure status is noFailure
Active links bitmap 0x0
IMA Group Current Configuration:
Tx/Rx configured links bitmap 0x0/0x0
Tx/Rx minimum required links 1/1
Maximum allowed diff delay is 25ms, Tx frame length 128
Ne Tx clock mode CTC, configured timing reference link ATM1/0
Test pattern procedure is disabled
IMA link Information:
Link Physical Status NearEnd Rx Status Test Status
---- --------------- ----------------- -----------
VRC_E29_32_C2611_xxx_123_CORE#
10-29-2009 09:35 AM
Hello Dylan,
see the following documents:
http://www.cisco.com/en/US/tech/tk39/tk356/technologies_tech_note09186a0080093d52.shtml
ATM IMA ver. 1.1
http://www.cisco.com/en/US/tech/tk39/tk356/technologies_tech_note09186a008009455b.shtml
Hope to help
Giuseppe
10-29-2009 09:41 AM
Giuseppe-
Thanks for the links. I have already been pouring over those links for 2 days now and I cannot seem to find anything in them that helps.
Thanks
11-01-2009 01:10 AM
Hello Dylan,
sorry for that, but providing links is the first line of help.
I think something is going wrong with IMA negotiation messages, the fact that each link in stand-alone mode goes up means that encoding and clock are fine.
You may be facing a bug that affects ATM IMA in your device.
I would give a try to another IOS image.
If I remember correctly in another thread the solution was an IOS change.
Hope to help
Giuseppe
11-01-2009 07:07 PM
Giuseppe-
I was thinking that as well. But that that turned out not to be the problem. We had Qwest send a tech to check the NIU. They said the NIU was fine, but ever since the tech touched the circuit it has been running clean. I wonder if the NIU wasn't seated right or something.
Thanks for your help though,
Dylan
11-02-2009 01:30 AM
Hello Dylan,
thanks for reporting the solution of your issue.
this can help somebody else.
So the issue was on the service provider side.
I suppose the NIU is a device provided by provider to your premises.
Best Regards
Giuseppe
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