07-17-2013 03:20 AM - edited 03-04-2019 08:28 PM
Hello
We just changed a basic dsl modem for a Cisco 887VA DSL router and the throughput is very bad.the line and profile support ADSL2+. We have checked with the provider and there are not line faults and the profile applied by the provider is 2mb/12Mb [the line can support 2.5Mb/26Mb] up and down.
DSL-internet#show atm pvc interface atM 0
VCD / Peak Av/Min Burst
Interface Name VPI VCI Type Encaps SC Kbps Kbps Cells St
0 1 8 35 PVC SNAP UBR 2044 UP
DSL-internet#
We are running the following IOS: c880data-universalk9-mz.152-4.M3.bin
When we run ISP speed tests we are getting about about 500Kb/3Mb up/down with about 240ms ping tests.
Do you know if there is an issue with the ADSL2+ operation on this Cisco DSL router. It should be transparent, as regards configuration, as far as I am aware.
Thanks
Nick
Solved! Go to Solution.
07-17-2013 04:25 AM
Can you post the info from this command:
sh controllers vdsl 0
What is your ISP for this line?
07-17-2013 04:12 AM
What ISP are you using? I had the same issue with when I replaced an a standard router on a BT line with a Cisco 877 and it was terrible and BY said they don't support Cisco (what!!). I then found out that Cisco had a newer modem version not IOS for the 877 to deal with ADSL+2 and the Annex M, well as soon as I upgraded this and rebooted it was an istand success and bu VPN was stable and much faster.
07-17-2013 04:18 AM
Hello Andy. this is a brand new router, hot off the shelf. Surely I must be able to apply a Cisco update to it, if required.
07-17-2013 04:25 AM
Can you post the info from this command:
sh controllers vdsl 0
What is your ISP for this line?
07-17-2013 05:01 AM
Hello Andy
My pro vider is eir com in Ire land
Thanks again
DSL-internet#show controllers vdSL 0
Controller VDSL 0 is UP
Daemon Status: Up
XTU-R (DS) XTU-C (US)
Chip Vendor ID: 'BDCM' 'BDCM'
Chip Vendor Specific: 0x0000 0xA325
Chip Vendor Country: 0xB500 0xB500
Modem Vendor ID: 'CSCO' ' '
Modem Vendor Specific: 0x4602 0x0000
Modem Vendor Country: 0xB500 0x0000
Serial Number Near: FCZ17259108 887VA-M 15.2(4)M
Serial Number Far:
Modem Version Near: 15.2(4)M
Modem Version Far: 0xa325
Modem Status: TC Sync (Showtime!)
DSL Config Mode: AUTO
Trained Mode: G.992.5 (ADSL2+) Annex M
TC Mode: ATM
Selftest Result: 0x00
DELT configuration: disabled
DELT state: not running
Trellis: ON ON
SRA: disabled disabled
SRA count: 0 0
Bit swap: enabled enabled
Bit swap count: 0 17571
Line Attenuation: 14.5 dB 9.9 dB
Signal Attenuation: 15.3 dB 9.6 dB
Noise Margin: 21.8 dB 17.0 dB
Attainable Rate: 26812 kbits/s 2593 kbits/s
Actual Power: 13.6 dBm 12.8 dBm
Total FECC: 0 0
Total ES: 0 0
Total SES: 0 0
Total LOSS: 0 0
Total UAS: 60 60
Total LPRS: 0 0
Total LOFS: 0 0
Total LOLS: 0 0
Full inits: 1
Failed full inits: 1
Short inits: 1
Failed short inits: 0
Firmware Source File Name (version)
-------- ------ -------------------
VDSL embedded VDSL_LINUX_DEV_01212008 (1)
Modem FW Version: 120306_1254-4.02L.03.A2pv6C035j.d23j
Modem PHY Version: A2pv6C035j.d23j
Vendor Version: Ap6v35j.23j 68
DS Channel1 DS Channel0 US Channel1 US Channel0
Speed (kbps): 0 12286 0 2044
SRA Previous Speed: 0 0 0 0
Previous Speed: 0 0 0 0
Total Cells: 0 2120766691 0 352819395
User Cells: 0 103356576 0 16839525
Reed-Solomon EC: 0 0 0 0
CRC Errors: 0 0 0 0
Header Errors: 0 0 0 0
Interleave (ms): 0.00 10.70 0.00 6.98
Actual INP: 0.00 5.80 0.00 0.93
Training Log : Stopped
Training Log Filename : flash:vdsllog.bin
07-17-2013 05:50 AM
So it looks like you are getting 12mb downlaod and 2mb upload? Is is stable atleast?
Your IOS seems quite up-to-date I think you modem version is from 2012 and there is a newer version so you coudl perhaps try updating that to:
A2pv6C035l.d23j
Thanks
07-17-2013 09:05 AM
Hello Andy
It is working quite well now, considering it is ADSL. I just did a speed test and we are getting a 26ms ping/ 7.3 MB down and 1.7MB up. I will look at the modem software shortly. Thanks for the input and best of luck [ we removed some firewalling on the router, so am wondering if it was slowing in down also]. Anyhow, case closed. Cheers Nick
07-17-2013 09:16 AM
Thanks, yeah check the CPU output.
Please rate if I was any help.
Kind regards
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