[AusNOG] Latency Issue
arun
arunramprasad at ymail.com
Tue Aug 2 08:55:47 EST 2016
Try to run a wireshark capture when you try to browse and look for tcp retransmissions.
Arun
> On 2 Aug 2016, at 8:33 AM, Mike Taylor <mtaylor at totalteam.co.nz> wrote:
>
> I want to say duplicate IP issue, but that's only because that was the last datacentre fault, with similar symptoms, that I had to to troubleshoot..
>
>
> Regards,
>
> Mike
> Mike Taylor
> The Total Team
>
> DDI: +64 33530993
> MOB: +64 274731969
> 0800 888 326 / +64 3 3779050
>> On 02/08/16 10:16, Ben Hohnke wrote:
>> That sounds more like an mtu bottleneck issue rather than latency
>>
>>> On Tue, 2 Aug 2016, 08:10 QCS Group - Infrastructure <Infrastructure at qcsgroup.com.au> wrote:
>>> Web pages seems to timeout on first load attempt sometimes. Refresh and jumps through ok. Once loaded no issues at all. Just wondering if this could cause it or something else in the works
>>>
>>>
>>>
>>> Sent from my Samsung device
>>>
>>>
>>> -------- Original message --------
>>> From: Philip Loenneker <Philip.Loenneker at tasmanet.com.au>
>>> Date: 2/08/2016 08:03 (GMT+10:00)
>>> To: ausnog at lists.ausnog.net
>>> Subject: Re: [AusNOG] Latency Issue
>>>
>>> Hi Marius,
>>>
>>>
>>>
>>> Are you seeing “real world” traffic or performance issues, or only on the traceroute? A lot of routers dedicate resources to throughput rather than responding to ICMP, so it could be the specific hardware on AAPT’s network or their configuration. The fact that the later hops have consistent ping times, including all 3 paths being within 1ms of each other for the last hop, implies that traffic is flowing ok.
>>>
>>>
>>>
>>> Regards,
>>>
>>> Philip Loenneker | Network Engineer | TasmaNet
>>>
>>> 40-50 Innovation Drive, Dowsing Point, Tas 7010, Australia
>>>
>>> P: 03 6165 2542 | M: 0404 097 816
>>>
>>> philip.loenneker at tasmanet.com.au
>>>
>>> www.tasmanet.com.au
>>>
>>>
>>>
>>> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of QCS Group - Infrastructure
>>> Sent: Tuesday, 2 August 2016 7:55 AM
>>> To: ausnog at lists.ausnog.net
>>> Subject: [AusNOG] Latency Issue
>>>
>>>
>>>
>>> Hi All,
>>>
>>>
>>>
>>> Hoping someone could push me in the right direction, we have a rack in NextDC B1.
>>>
>>>
>>>
>>> I am getting some strange latency issues when doing trace routes, we have 2 x BGP routes through AAPT, each one on a different AG Access, and also 1 BGP with Pipe networks.
>>>
>>>
>>>
>>> Issue seems to be on the AAPT stuff, ping doesn’t seem so spike a lot but the traceroute is really an issue as sometimes it will actually timeout. Anyone ever seen this or have some guidance? Below is some logs
>>>
>>>
>>>
>>> Using AAPT link 1
>>>
>>> [admin at BGP1.DC1.QCSGROUP.COM.AU] > tool traceroute 8.8.8.8 routing-table=AAPT
>>>
>>> # ADDRESS LOSS SENT LAST AVG BEST WORST
>>>
>>> 1 61.69.105.161 7.6% 145 1.4ms 20.2 0.9 802.7
>>>
>>> 2 203.131.62.32 0% 145 0.7ms 2.1 0.7 71.7
>>>
>>> 3 202.10.12.25 0% 145 0.8ms 1.1 0.7 9.1
>>>
>>> 4 202.10.12.18 0% 145 0.7ms 2.9 0.6 85.4
>>>
>>> 5 202.10.14.39 0% 145 1.2ms 1.3 1.1 3
>>>
>>> 6 203.219.107.209 0% 145 13.9ms 14.1 13.8 14.4
>>>
>>> 7 203.219.166.193 0% 145 13.6ms 17.9 13.5 258.3
>>>
>>> 8 203.219.107.113 0% 145 16.2ms 15 13 16.8
>>>
>>> 9 203.219.35.132 0% 145 25.3ms 20.4 13.6 25.5
>>>
>>> 10 203.219.107.6 0% 144 14ms 14.6 13.9 40.7
>>>
>>> 11 72.14.237.11 0% 144 14.4ms 14.4 14.3 14.9
>>>
>>> 12 216.239.40.255 0% 144 14.4ms 14.4 14.3 16.2
>>>
>>> 13 8.8.8.8 0% 144 13.9ms 13.9 13.8 14.4
>>>
>>>
>>>
>>> Using AAPT Link 2
>>>
>>> [admin at BGP1.DC1.QCSGROUP.COM.AU] > tool traceroute 8.8.8.8 routing-table=AAPT1
>>>
>>> # ADDRESS LOSS SENT LAST AVG BEST WORST
>>>
>>> 1 59.100.211.221 34% 54 timeout 102.7 0.8 822
>>>
>>> 2 203.131.62.22 0% 53 0.5ms 1 0.4 22.2
>>>
>>> 3 202.10.14.39 0% 53 1ms 1.2 0.9 2.3
>>>
>>> 4 203.219.107.209 0% 53 13.3ms 13.3 13.1 15.3
>>>
>>> 5 203.219.166.129 0% 53 12.9ms 15.6 12.8 85.8
>>>
>>> 6 203.219.107.113 0% 53 14.8ms 14.7 12.9 16.6
>>>
>>> 7 203.219.35.132 0% 53 22.7ms 19.3 14.6 24.5
>>>
>>> 8 203.219.107.6 0% 53 13.9ms 14.4 13.8 26
>>>
>>> 9 216.239.41.51 0% 53 14.3ms 14.3 14.2 14.4
>>>
>>> 10 216.239.41.83 0% 53 14.9ms 14.8 14.8 14.9
>>>
>>> 11 8.8.8.8 0% 53 13.8ms 13.8 13.7 14.4
>>>
>>>
>>>
>>> Ping from AAPT
>>>
>>> 112 61.69.105.161 56 64 0ms
>>>
>>> 113 61.69.105.161 56 64 1ms
>>>
>>> 114 61.69.105.161 56 64 0ms
>>>
>>> 115 61.69.105.161 56 64 0ms
>>>
>>> sent=116 received=116 packet-loss=0% min-rtt=0ms avg-rtt=0ms max-rtt=2ms
>>>
>>>
>>>
>>> Using Pipe
>>>
>>> [admin at BGP1.DC1.QCSGROUP.COM.AU] > tool traceroute 8.8.8.8 routing-table=pipe-netw
>>>
>>> ork
>>>
>>> # ADDRESS LOSS SENT LAST AVG BEST WORST
>>>
>>> 1 203.192.85.233 0% 150 0.7ms 1.1 0.2 36.9
>>>
>>> 2 121.101.138.4 0% 150 13.1ms 13.1 13.1 13.2
>>>
>>> 3 121.101.138.230 0% 150 13.1ms 13.2 13.1 24.2
>>>
>>> 4 121.101.138.149 0% 150 15.4ms 13.5 13.1 16.6
>>>
>>> 5 218.100.2.97 0% 150 13.6ms 14 13.6 44.4
>>>
>>> 6 216.239.41.77 0% 150 13.8ms 13.8 13.7 13.9
>>>
>>> 7 209.85.244.15 0% 150 13.6ms 13.6 13.6 13.7
>>>
>>> 8 8.8.8.8 0% 150 13.5ms 13.5 13.5 13.6
>>>
>>>
>>>
>>> Thanks
>>>
>>> Marius
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>
>>
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