I have a Cisco 877 VPN running over an ADSL line. I have put in many of these without issue. I have this new remote office where we have installed a new ADSL line and a Cisco 877 which is again setup as a VPN to a Cisco ASA.
The VPN is up and running but maybe once an hour is might blip and the VPN and I believe the ADSL line will go down as I can't access the router from the outside.
The ADSL provider says the line is fine (I have my doubts it's the router), but I use the same router and IOS version on other lines.
Are there any commands I can use to help me or any other suggestions?
IOS = c870-advipservicesk9-mz.124-15.T5.bin
877#sh dsl interface
Alcatel 20190 chipset information
ATU-R (DS) ATU-C (US)
Modem Status: Showtime (DMTDSL_SHOWTIME)
DSL Mode: ITU G.992.1 (G.DMT) Annex A
ITU STD NUM: 0x03 0x2
Vendor ID: 'STMI' 'TSTC'
Vendor Specific: 0x0000 0x0000
Vendor Country: 0x0F 0xB5
Chip ID: C196 (0)
DFE BOM: DFE3.0 Annex A (1)
Capacity Used: 99% 87%
Noise Margin: 3.0 dB 11.0 dB
Output Power: 20.0 dBm 12.5 dBm
Attenuation: 41.0 dB 22.0 dB
Defect Status: None None
Last Fail Code: None
Watchdog Counter: 0x33
Watchdog Resets: 0
Selftest Result: 0x00
Interrupts: 12420 (0 spurious)
PHY Access Err: 0
LED Status: ON
LED On Time: 100
LED Off Time: 100
Init FW: init_AMR-3.0.014_no_bist.bin
Operation FW: AMR-3.0.014.bin
FW Source: embedded
FW Version: 3.0.14
Interleave Fast Interleave Fast
Speed (kbps): 6336 0 832 0
Cells: 1516428 0 24379932 0
Reed-Solomon EC: 3898 0 467 532
CRC Errors: 1988 0 502 506
Header Errors: 907 0 475 522
Total BER: 65535E-255 0E-0
Leakage Average BER: 65535E-255 0E-0
ATU-R (DS) ATU-C (US)
Bitswap: enabled enabled
Bitswap success: 0 0
Bitswap failure: 0 0
LOM Monitoring : Disabled
This router plugs into a Nortel switch which only has 1 PC in it at the moment.
I have the same problem on adsl or vdsl and 850s or 870s. I am having a hard time catching the issue while it is happening to troubleshoot. I would also like some guidance on how to single out the true issue.
enable logging on the local buffer (logging buffer) and then check the log buffer with sh log command.
If your guess is right you should see messages like line protocol down on interface ATM0 and other related messages.
To help you correlate the events you could configure NTP protocol on your remote router and the service debug timestamps datetime ms and service log timepstamps datetime ms commands in order to have timestamps with date and time.
By looking at your show command you can see there have been some CRC errors and Reed-Solomon error corrections (EC). 1988 errors over so many cells are not too much.
total BER is 0.
may be there some events related to IPSec by looking at the log buffer you can find new information
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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