10-22-2010 09:39 PM - edited 03-04-2019 10:13 AM
Hi,
Router A and Router B(3845) connected with 50 mbps point to point ethernet link.
Router A(interface) shows the bandwidth 49 mbps but routerB shows only 25 mbps.
what would be the problem ?
Thanks.,
10-22-2010 10:29 PM
Is it Eth or FastEth ?
There is a significant difference of 90Mbps between both.
Could you post some show interface and show run interface commands from the routers ?
10-22-2010 11:26 PM
Fastethernet link.
Roter A Both side the same config
interface FastEthernet0
Ip address ****
load-interval 30
duplex full
speed 100
Ruoter B(3725)(System image file is "flash:c3825-advsecurityk9-mz.124-24.T3.bin")
interface FastEthernet0
Ip address ****
load-interval 30
duplex full
speed 100
There is no error in the both roter interface,
10-22-2010 11:53 PM
Couple of pointers if i understood you correctly:-
1. Did you mean that your throughput/ 30 sec rate is not matching on both the routers ?
This will not be same unless until its a symmetric traffic like icmp.
2. There are errors in counters as shown in the attachment starting from late collisions, output drops et al.
If its a back to back cabling, please change the cable and try.
3. Clear the counters and recheck with ping
10-23-2010 02:40 AM
>>>>>>1. Did you mean that your throughput/ 30 sec rate is not matching on both the routers ?
This will not be same unless until its a symmetric traffic like icmp.
Ok.Thanks,
>>>>>>>>>>2. There are errors in counters as shown in the attachment starting from late collisions, output drops et al.
>>>>>>>>>>3. Clear the counters and recheck with ping
i will check and confirm.
10-22-2010 11:58 PM
Hi,
The output you shared is showing lot of output error and collision counter increasea lot. are you sure this link operate in full duplex mode.
fOne queston:
> is this two router connected back to back. if no can you try duplex auto (also ask telko to change it to auto mode )
and see what you are learning from telco end.(i mean see the output of sh interface command and see if there is half duplex operation or not)
if so you can ask him to change the setting.
Regards
Mahesh
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