Re: [PLUG] slow gigbit FiOS

[brent timothy saner <brent.saner@gmail.com>]

On 09/02/2017 06:33 PM, Sonny To wrote:
> I have two servers one on xfinity 150mbps/10mbps in princeton,nj and the
> other on fios 1gbps/1gbps in Philly. when I did a speedtest on fios, i'm
> only getting 100mbps/100mbps. I am not sure why but suspect it could be
> that the cable is not cat6.  I ordered cat6 cable to see if that fixes it.
> 
> The unusual thing is the fios connection is laggy when I am using nx via
> ssh tunneling with compression. the xfinity ,however, is fast and
> responsive. I couldn't tell that I'm remote.  I expect the fios to be
> more responsive because the upstream is 100mbps but its almost
> unusable.  I'm connecting to both machines from Sofia, Bulgaria. both
> connection have similar latency reported via ping. can anyone offer an
> explanation why?

First, clarification: when you say "mbps", do you mean Mbps, or MBps?
Former is megabits/s, latter is megabytes/s. They're different. Your
speedtool may be unclear in which it's reporting. 1000 megaBITS
(1gigaBIT) is 125 megaBYTES - and 100megaBYTES is 0.8 gigaBITS.


Secondly:

[root@dawid ~]# iperf3 -c 10.11.12.1
Connecting to host 10.11.12.1, port 5201
[  4] local 10.11.12.11 port 55106 connected to 10.11.12.1 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   113 MBytes   949 Mbits/sec    0    380 KBytes

[  4]   1.00-2.00   sec   111 MBytes   931 Mbits/sec    0    397 KBytes

[  4]   2.00-3.00   sec   112 MBytes   937 Mbits/sec    0    419 KBytes

[  4]   3.00-4.00   sec   112 MBytes   936 Mbits/sec    0    440 KBytes

[  4]   4.00-5.00   sec   111 MBytes   935 Mbits/sec    0    462 KBytes

[  4]   5.00-6.00   sec   111 MBytes   935 Mbits/sec    0    462 KBytes

[  4]   6.00-7.00   sec   111 MBytes   935 Mbits/sec    0    462 KBytes

[  4]   7.00-8.00   sec   111 MBytes   935 Mbits/sec    0    462 KBytes

[  4]   8.00-9.00   sec   111 MBytes   933 Mbits/sec    0    462 KBytes

[  4]   9.00-10.00  sec   112 MBytes   937 Mbits/sec    0    462 KBytes

- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-10.00  sec  1.09 GBytes   936 Mbits/sec    0             sender
[  4]   0.00-10.00  sec  1.09 GBytes   934 Mbits/sec
receiver

iperf Done.
[root@dawid ~]# ethtool eno1 | grep base
	Supported link modes:   10baseT/Half 10baseT/Full
	                        100baseT/Half 100baseT/Full
	                        1000baseT/Full
	Advertised link modes:  10baseT/Half 10baseT/Full
	                        100baseT/Half 100baseT/Full
	                        1000baseT/Full


ALL your kit needs to support Gbps. The NIC ("Supported link modes"
above), as well as the router/switch/gateway NICs ("Advertised link
modes"), and depending on how your router/switch/etc. is configured,
everything on the same physical LAN needs to be Gbps as well, etc. Most
consumer kit downgrades to the slowest-spec NIC.

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