03-08-2012 08:03 PM - edited 03-04-2019 03:36 PM
Hi All, we have a Cisco 3825 router which does not work well with a DSL modem(ISP provided). I have configured the Gi0/0 port of the router to plug into this DSL modem but it does not ping to the ISP gateway. If we do a shut/no shut on the interface then it work fine for about 30 secs. Sometimes even for 1 hr. Then the packets drop and we cannot pass any traffic through this interface.
Now, if the ISP connection is terminated on a computer it works fine. It works fine without dropping any packet.
I have tried various options like using a straight/cross cable. I have tried to configure the interface negotiation for 100/full, 100/half, auto/auto and almost all the options.
I have also tried to interconnect the devices using a L2 device like a HUB. Nothing works.
Any recomendation on this? Has anyone seen this kind of a behavior?
Regards,
Nikhil Kulkarni.
03-09-2012 12:26 AM
can u check with the another Gi port if its working or not.
03-09-2012 06:22 PM
I have done that, checked even with a different router, switch, fast ethernet and Gi eth interfaces. It does not work.
With a PC it works. !!! this looks like there is some compatibility issues between the ISP modem and Cisco devices.
Regards,
Nik
03-09-2012 10:42 PM
Hi Nikhil ...what is the IOS?
03-09-2012 10:45 PM
c3825-advipservicesk9-mz.124-15.T6.bin
here goes the full sh ver:
rtr-vpn-kor-seo#sh ver
Cisco IOS Software, 3800 Software (C3825-ADVIPSERVICESK9-M), Version 12.4(15)T6,
RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Mon 07-Jul-08 13:37 by prod_rel_team
ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)
rtr-vpn-kor-seo uptime is 1 hour, 48 minutes
System returned to ROM by power-on
System image file is "flash:c3825-advipservicesk9-mz.124-15.T6.bin"
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
Cisco 3825 (revision 1.1) with 223232K/38912K bytes of memory.
Processor board ID FTX1101A1RL
2 FastEthernet interfaces
2 Gigabit Ethernet interfaces
1 terminal line
1 Virtual Private Network (VPN) Module
1 cisco content engine(s)
DRAM configuration is 64 bits wide with parity enabled.
479K bytes of NVRAM.
62720K bytes of ATA System CompactFlash (Read/Write)
Configuration register is 0x2102
rtr-vpn-kor-seo#
03-09-2012 10:50 PM
show run int gig0/0
show int gig0/0
show run | in ip route
and what the settings we have on modem side for speed?hardcode or nego..?
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