02-28-2010 10:01 PM - edited 03-04-2019 07:39 AM
Hello
Has anyone had any experience with a Cisco 1841 and a HWIC-2SHDSL?
The problem I'm having is very very poor upload speeds on a 1Mbps/1Mbps 4 wire G.SHDSL service maxing out at ~ 10-15KBps egress. The download speed is fine up to ~ 1Mbps ingress.
The service provider claims there is no issue with the circuit, and I'm now I'm forced to focus my attention on the router/ WIC card.
There does appear to be some OAM errors incrementing very slowly(~200 over 72 hours) on ATM PVC sub-interface, but there are no CRC errors on SHDSL controller. The SHDSL seems to be connected correctly with the right line coding/ rate as per the service provider recommended settings.
Is there anything else I could check? See attached info
03-01-2010 09:54 AM
Hello Tf2-conky,
your router has no problems on the link itself
each DSL pair is working at
Line coding: 16-TCPAM, configured/actual rate: AUTO/576 kbps
but second pair stats are strange:
Previous 24 hr statistics:
ES: 4294967295, SES: 0, CRC: 4294967040, LOSWS: 0, UAS: 0
ATM-TC Tx: data cells: 0, Idle/Unassigned: 0
ATM-TC Rx: data cells: 0, uncorr HEC: 0, corr HEC: 0
ATM-TC Rx: OCD: 0, LCD start: 0, LCD end: 0
it looks like it has never been used by user traffic and errored seconds cannot be that high number in one day.
The same for CRC errors that cannot be so high in 24 h
This can be just a cosmetic bug because that number is close to 2^32-1
Hope to help
Giuseppe
03-01-2010 02:31 PM
Conky,
I ran into a similar problem a week ago setting up a DMZ - although I don't know if this will be related. I was running speed test and was getting horrible upload speeds from my laptop. Come to find out, my NIC was hardcoded to 100 full. Upon setting the NIC back to auto the upload speed increased. The same happened from one of my DSL locations. Hope this helps and good luck.
When you figure this out post the resolution, Conky.
thx.
03-09-2010 02:14 PM
Resolved.
Forgot to set the vbr-nrt on the atm pvc
interface ATM0/1/0.33
Pvc 0/33
vbr-nrt 1024 1024
Now seeing ~1Mb/s down, and ~1Mb/s up
http://www.cisco.com/en/US/tech/tk39/tk51/technologies_tech_note09186a0080102a42.shtml#vbrnrt
03-09-2010 09:30 PM
Hello Conky,
you have been kind to provide a feedback on this issue.
This makes this case complete with an happy end
Best Regards
Giuseppe
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