04-08-2014 05:28 AM - edited 03-04-2019 10:45 PM
Hello,
I have a big problems with a cisco router 881,the connection works correctly when nobody use the networks(ping works on every computer) but when people working the connection gone every 5 minutes and comes back after 30 seconds
Please help me.
thank you
04-08-2014 02:20 PM
Hi,
Can you please let us know on which port is connected your LAN and WAN?
Also try this change and test if internet access is working:
no ip nat inside source list 2 interface FastEthernet0 overload
ip nat inside source list 2 interface FastEthernet4 overload
04-08-2014 02:43 PM
Hi,
Thank's for your answer !
Wan is connected on port Wan (FastEthernet 4)
and Lan on port F0
Why we need to put ip nat inside on the Wan ?
Thanks for your help
04-09-2014 12:48 AM
Hi,
ACL 2 tells you that packets which match this ACL will be NATed. State ment "interface Fa4 over" says that source address of match packets will be translated to IP address of this interface. You need to use Fa4 port because this port has public IP address.
Did this change help?
04-09-2014 02:11 AM
Thank's i will test that this afternoon and where i set the ip nat outside ? Fa4 too ?
04-10-2014 03:18 AM
please post another "show run" , a "show ip nat trans" , also what speed is your wan connection into fa4 ?
04-10-2014 02:24 PM
like i told this morning i found the problem it was the duplex it was in auto i set it on "full" and now the internet work like a charm ! no more collission thank's all !!
04-10-2014 12:05 PM
please post outputs of these commands:
sh run int Fa4
sh int Fa4
04-10-2014 02:25 PM
like i told this morning i found the problem it was the duplex it was in auto i set it on "full" and now the internet work like a charm ! no more collission thank's all !!
04-10-2014 02:58 AM
i have a lot tx_late_collision_err on Fa4 why ?
it is normal ?
throttled=0, enabled=0, disabled=0
rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0
rx_no_enp=0, rx_discard=0, filtered_pak=0
tx_one_col_err=25433, tx_more_col_err=13805, tx_deferred_err=128350
tx_underrun_err=0, , tx_loss_carrier_err=3501
tx_exc_collision_err=0, fatal_tx_err=1, tx_recovery_count=36
fast_throttle_count=0, fast_unthrottle_count=0, max_pause_timeout=0
thanks
04-09-2014 02:48 AM
04-09-2014 07:54 AM
i did it internet is ok but same thing every 5 minutes packet lost and connection back after 20-30 seconds
04-10-2014 02:58 AM
i have a lot tx_late_collision_err on Fa4 why ?
it is normal ?
throttled=0, enabled=0, disabled=0
rx_framing_err=0, rx_overflow_err=0, rx_buffer_err=0
rx_no_enp=0, rx_discard=0, filtered_pak=0
tx_one_col_err=25433, tx_more_col_err=13805, tx_deferred_err=128350
tx_underrun_err=0, , tx_loss_carrier_err=3501
tx_exc_collision_err=0, fatal_tx_err=1, tx_recovery_count=36
fast_throttle_count=0, fast_unthrottle_count=0, max_pause_timeout=0
thanks
04-10-2014 03:13 AM
when internet gone 8 packets lost and internet go back and i can't ping the default router when internet go down.
04-10-2014 03:53 AM
i found the problem it was the duplex i set it on full and now all it works good thanks all
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