23 Aug
2016
23 Aug
'16
10:56 a.m.
Hi
can anyone explain why i get every second ping missing packets from AMPRGW ?
it happen not only from my PC also from other places ...
Regards
Ronen-4Z4ZQ
http://www.ronen.org
Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
www.ronen.org
ronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by domainavenue.com
C:\Documents and Settings\customer>ping 169.228.66.251
Pinging 169.228.66.251 with 32 bytes of data:
Request timed out.
Reply from 169.228.66.251: bytes=32 time=336ms TTL=40
Request timed out.
Reply from 169.228.66.251: bytes=32 time=286ms TTL=40
Ping statistics for 169.228.66.251:
Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
Approximate round trip times in milli-seconds:
Minimum = 286ms, Maximum = 336ms, Average = 311ms
C:\Documents and Settings\customer>
23 Aug
23 Aug
10:59 a.m.
Could you please do traceroute and winmtr scan?
73,
LZ1ETE
On Tue, Aug 23, 2016 at 12:56 PM, R P <ronenp(a)hotmail.com> wrote:
> (Please trim inclusions from previous messages)
> _______________________________________________
> Hi
>
> can anyone explain why i get every second ping missing packets from
> AMPRGW ?
>
> it happen not only from my PC also from other places ...
>
> Regards
>
> Ronen-4Z4ZQ
>
> http://www.ronen.org
>
> Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
> www.ronen.org
> ronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by domainavenue.com
>
>
>
>
> C:\Documents and Settings\customer>ping 169.228.66.251
>
> Pinging 169.228.66.251 with 32 bytes of data:
>
> Request timed out.
> Reply from 169.228.66.251: bytes=32 time=336ms TTL=40
> Request timed out.
> Reply from 169.228.66.251: bytes=32 time=286ms TTL=40
>
> Ping statistics for 169.228.66.251:
> Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 286ms, Maximum = 336ms, Average = 311ms
>
> C:\Documents and Settings\customer>
>
>
11:03 a.m.
what is winmtr ?
Tracing route to amprgw.sysnet.ucsd.edu [169.228.66.251]
over a maximum of 30 hops:
1 7 ms 3 ms 3 ms 192.168.1.1
2 * * * Request timed out.
3 19 ms 17 ms 19 ms hfa-hot-N.con.hotnet.net.il [213.57.3.238]
4 24 ms 15 ms 16 ms ae1.200.hfa.mx-hot-N.con.hotnet.net.il [213.57.3
.237]
5 20 ms 17 ms 17 ms ae7.50.pt.mx-mx.con.hotnet.net.il [213.57.0.249]
6 89 ms 85 ms 86 ms ffm-b4-link.telia.net [213.248.69.137]
7 81 ms 77 ms 77 ms ffm-bb3-link.telia.net [62.115.120.5]
8 79 ms 78 ms 78 ms ffm-b10-link.telia.net [80.91.251.124]
9 76 ms 74 ms 186 ms ae11.edge4.Frankfurt.Level3.net [4.68.70.105]
10 * * * Request timed out.
11 300 ms 306 ms 308 ms CENIC.ear1.LosAngeles1.Level3.net [4.35.156.66]
12 331 ms 307 ms 342 ms dc-tus-agg3--lax-agg6-100ge.cenic.net [137.164.1
1.7]
13 343 ms 293 ms 307 ms dc-sdg-agg4--tus-agg3-100ge.cenic.net [137.164.1
1.9]
14 330 ms 306 ms 308 ms dc-ucsd-1--sdg-agg4.cenic.net [137.164.23.54]
15 246 ms 244 ms 244 ms nodem-core--mx0-30ge.ucsd.edu [132.239.254.163]
16 247 ms 330 ms 308 ms ebu3b-6509-720-vlan910-gw1.ucsd.edu [132.239.255
.131]
17 * * 335 ms amprgw.sysnet.ucsd.edu [169.228.66.251]
Trace complete.
C:\Documents and Settings\customer>
________________________________
From: 44Net <44net-bounces+ronenp=hotmail.com(a)hamradio.ucsd.edu> on behalf of Todor
Kandev <todor(a)kandev.com>
Sent: Tuesday, August 23, 2016 2:59 AM
To: AMPRNet working group
Subject: Re: [44net] missing packets in to AMPRGW ?
(Please trim inclusions from previous messages)
_______________________________________________
Could you please do traceroute and winmtr scan?
73,
LZ1ETE
On Tue, Aug 23, 2016 at 12:56 PM, R P <ronenp(a)hotmail.com> wrote:
(Please trim inclusions from previous messages)
_______________________________________________
Hi
can anyone explain why i get every second ping missing packets from
AMPRGW ?
it happen not only from my PC also from other places ...
Regards
Ronen-4Z4ZQ
http://www.ronen.org
Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
www.ronen.org
ronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by domainavenue.com
>
> Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
> www.ronen.org<http://www.ronen.org>
> ronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by domainavenue.com
>
>
>
>
> C:\Documents and Settings\customer>ping 169.228.66.251
>
> Pinging 169.228.66.251 with 32 bytes of data:
>
> Request timed out.
> Reply from 169.228.66.251: bytes=32 time=336ms TTL=40
> Request timed out.
> Reply from 169.228.66.251: bytes=32 time=286ms TTL=40
>
> Ping statistics for 169.228.66.251:
> Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
> Approximate round trip times in milli-seconds:
> Minimum = 286ms, Maximum = 336ms, Average = 311ms
>
> C:\Documents and Settings\customer>
>
>
11:06 a.m.
http://winmtr.net/
It is something like ping and traceroute at the same time. Pings each hop
in the path and shows you where the drop is.
73,
LZ1ETE
On Tue, Aug 23, 2016 at 1:03 PM, R P <ronenp(a)hotmail.com> wrote:
> (Please trim inclusions from previous messages)
> _______________________________________________
> what is winmtr ?
>
>
> Tracing route to amprgw.sysnet.ucsd.edu [169.228.66.251]
> over a maximum of 30 hops:
>
> 1 7 ms 3 ms 3 ms 192.168.1.1
> 2 * * * Request timed out.
> 3 19 ms 17 ms 19 ms hfa-hot-N.con.hotnet.net.il [213.57.3.238]
> 4 24 ms 15 ms 16 ms ae1.200.hfa.mx-hot-N.con.hotnet.net.il
> [213.57.3
> .237]
> 5 20 ms 17 ms 17 ms ae7.50.pt.mx-mx.con.hotnet.net.il
> [213.57.0.249]
>
> 6 89 ms 85 ms 86 ms ffm-b4-link.telia.net [213.248.69.137]
> 7 81 ms 77 ms 77 ms ffm-bb3-link.telia.net [62.115.120.5]
> 8 79 ms 78 ms 78 ms ffm-b10-link.telia.net [80.91.251.124]
> 9 76 ms 74 ms 186 ms ae11.edge4.Frankfurt.Level3.net
> [4.68.70.105]
> 10 * * * Request timed out.
> 11 300 ms 306 ms 308 ms CENIC.ear1.LosAngeles1.Level3.net
> [4.35.156.66]
>
> 12 331 ms 307 ms 342 ms dc-tus-agg3--lax-agg6-100ge.cenic.net
> [137.164.1
> 1.7]
> 13 343 ms 293 ms 307 ms dc-sdg-agg4--tus-agg3-100ge.cenic.net
> [137.164.1
> 1.9]
> 14 330 ms 306 ms 308 ms dc-ucsd-1--sdg-agg4.cenic.net
> [137.164.23.54]
> 15 246 ms 244 ms 244 ms nodem-core--mx0-30ge.ucsd.edu
> [132.239.254.163]
>
> 16 247 ms 330 ms 308 ms ebu3b-6509-720-vlan910-gw1.ucsd.edu
> [132.239.255
> .131]
> 17 * * 335 ms amprgw.sysnet.ucsd.edu [169.228.66.251]
>
> Trace complete.
>
> C:\Documents and Settings\customer>
>
>
>
> ________________________________
> From: 44Net <44net-bounces+ronenp=hotmail.com(a)hamradio.ucsd.edu> on
> behalf of Todor Kandev <todor(a)kandev.com>
> Sent: Tuesday, August 23, 2016 2:59 AM
> To: AMPRNet working group
> Subject: Re: [44net] missing packets in to AMPRGW ?
>
> (Please trim inclusions from previous messages)
> _______________________________________________
> Could you please do traceroute and winmtr scan?
>
> 73,
> LZ1ETE
>
> On Tue, Aug 23, 2016 at 12:56 PM, R P <ronenp(a)hotmail.com> wrote:
>
> > (Please trim inclusions from previous messages)
> > _______________________________________________
> > Hi
> >
> > can anyone explain why i get every second ping missing packets from
> > AMPRGW ?
> >
> > it happen not only from my PC also from other places ...
> >
> > Regards
> >
> > Ronen-4Z4ZQ
> >
> > http://www.ronen.org
> Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
> www.ronen.org
> ronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by domainavenue.com
>
>
>
> >
> > Ronen Pinchooks (4Z4ZQ) WebSite<http://www.ronen.org/>
> > www.ronen.org<http://www.ronen.org>
> > ronen.org (Ronen Pinchooks (4Z4ZQ) WebSite) is hosted by
> domainavenue.com
> >
> >
> >
> >
> > C:\Documents and Settings\customer>ping 169.228.66.251
> >
> > Pinging 169.228.66.251 with 32 bytes of data:
> >
> > Request timed out.
> > Reply from 169.228.66.251: bytes=32 time=336ms TTL=40
> > Request timed out.
> > Reply from 169.228.66.251: bytes=32 time=286ms TTL=40
> >
> > Ping statistics for 169.228.66.251:
> > Packets: Sent = 4, Received = 2, Lost = 2 (50% loss),
> > Approximate round trip times in milli-seconds:
> > Minimum = 286ms, Maximum = 336ms, Average = 311ms
> >
> > C:\Documents and Settings\customer>
> >
> >
11:14 a.m.
On Tue, Aug 23, 2016 at 12:56 PM, R P <ronenp(a)hotmail.com> wrote:
can anyone explain why i get every second ping
missing packets from
AMPRGW ?
it happen not only from my PC also from other places ...
Maybe a load balancer that has ICMP blocked? Appears to be new behaviour
though.
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 142.254.191.93 0.0% 141 8.1 9.8 7.4 153.2 13.1
2. xe-0-0-2.kanhhiad01h.hawaii.rr.c 0.0% 141 20.4 45.3 10.3 461.3 68.1
3. agg36.milnhixd01r.hawaii.rr.com 0.0% 141 9.3 9.6 6.2 27.3 1.6
4. agg31.lsancarc01r.socal.rr.com 0.0% 141 59.3 58.0 53.3 89.2 3.1
5. bu-ether16.lsancarc0yw-bcr00.tbo 0.0% 141 60.8 65.3 60.0 75.7 2.6
6. 0.ae1.pr0.lax00.tbone.rr.com 0.0% 141 60.5 61.5 59.8 89.6 3.6
7. UniversityCorpforAdvancedInterne 0.0% 141 57.8 58.6 56.9 97.8 5.3
8. et-7-3-0.80.rtsw.losa.net.intern 0.0% 141 61.3 61.4 59.9 91.6 3.5
9. 64.57.20.81 0.0% 141 66.4 66.3 62.2 125.0 5.0
10. dc-tus-agg3--lax-agg6-100ge.ceni 0.0% 141 66.6 67.1 65.6 124.9 5.1
11. dc-sdg-agg4--tus-agg3-100ge.ceni 0.0% 141 71.1 71.7 70.7 73.7 0.5
12. dc-ucsd-1--sdg-agg4.cenic.net 0.0% 141 70.5 70.9 65.9 85.2 2.1
13. nodem-core-6807-vlan2761-gw.ucsd 0.0% 140 71.0 75.0 69.0 385.9 27.6
14. ebu3b-6509-nodem-core-interconne 0.0% 140 71.7 72.4 70.8 86.6 2.1
15. amprgw.sysnet.ucsd.edu 56.1% 140 133.3 134.2 71.7 218.9 13.6
Antonio Querubin
e-mail: tony(a)lavanauts.org
xmpp: antonioquerubin(a)gmail.com
11:54 a.m.
|------------------------------------------------------------------------------------------|
| WinMTR statistics
|
| Host - % | Sent | Recv | Best | Avrg | Wrst | Last
|
|------------------------------------------------|------|------|------|------|------|------|
| 192.168.1.1 - 0 | 19 | 19 | 1 | 3 | 7 | 3
|
| No response from host - 100 | 4 | 0 | 0 | 0 | 0 | 0
|
| hfa-hot-N.con.hotnet.net.il - 0 | 19 | 19 | 16 | 19 | 27 | 16
|
| ae1.200.hfa.mx-hot-N.con.hotnet.net.il - 0 | 19 | 19 | 15 | 20 | 32 | 16
|
| ae7.50.pt.mx-mx.con.hotnet.net.il - 0 | 19 | 19 | 18 | 21 | 34 | 21
|
| ffm-b4-link.telia.net - 0 | 19 | 19 | 84 | 96 | 176 | 87
|
| ffm-bb3-link.telia.net - 0 | 19 | 19 | 78 | 85 | 153 | 79
|
| ffm-b10-link.telia.net - 0 | 19 | 19 | 76 | 88 | 175 | 79
|
| ae11.edge4.Frankfurt.Level3.net - 0 | 19 | 19 | 73 | 81 | 153 | 78
|
| No response from host - 100 | 4 | 0 | 0 | 0 | 0 | 0
|
| CENIC.ear1.LosAngeles1.Level3.net - 0 | 19 | 19 | 255 | 313 | 497 | 274
|
| dc-tus-agg3--lax-agg6-100ge.cenic.net - 0 | 19 | 19 | 258 | 313 | 498 | 273
|
| dc-sdg-agg4--tus-agg3-100ge.cenic.net - 0 | 19 | 19 | 247 | 305 | 497 | 270
|
| dc-ucsd-1--sdg-agg4.cenic.net - 0 | 19 | 19 | 247 | 306 | 498 | 270
|
| nodem-core--mx0-30ge.ucsd.edu - 0 | 19 | 19 | 246 | 307 | 498 | 275
|
| ebu3b-6509-720-vlan910-gw1.ucsd.edu - 0 | 19 | 19 | 247 | 305 | 497 | 270
|
| No response from host - 100 | 4 | 0 | 0 | 0 | 0 | 0
|
| No response from host - 100 | 4 | 0 | 0 | 0 | 0 | 0
|
| amprgw.sysnet.ucsd.edu - 80 | 5 | 1 | 0 | 341 | 341 | 341
|
|________________________________________________|______|______|______|______|______|______|
WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud Provider
________________________________
From: 44Net <44net-bounces+ronenp=hotmail.com(a)hamradio.ucsd.edu> on behalf of
Antonio Querubin <tony(a)lavanauts.org>
Sent: Tuesday, August 23, 2016 3:14 AM
To: AMPRNet working group
Subject: Re: [44net] missing packets in to AMPRGW ?
(Please trim inclusions from previous messages)
_______________________________________________
On Tue, Aug 23, 2016 at 12:56 PM, R P <ronenp(a)hotmail.com> wrote:
can anyone explain why i get every second ping
missing packets from
AMPRGW ?
it happen not only from my PC also from other places ...
Maybe a load balancer that has ICMP blocked? Appears to be new behaviour
though.
Keys: Help Display mode Restart statistics Order of fields quit
Packets Pings
Host Loss% Snt Last Avg Best Wrst StDev
1. 142.254.191.93 0.0% 141 8.1 9.8 7.4 153.2 13.1
2. xe-0-0-2.kanhhiad01h.hawaii.rr.c 0.0% 141 20.4 45.3 10.3 461.3 68.1
3. agg36.milnhixd01r.hawaii.rr.com 0.0% 141 9.3 9.6 6.2 27.3 1.6
4. agg31.lsancarc01r.socal.rr.com 0.0% 141 59.3 58.0 53.3 89.2 3.1
5. bu-ether16.lsancarc0yw-bcr00.tbo 0.0% 141 60.8 65.3 60.0 75.7 2.6
6. 0.ae1.pr0.lax00.tbone.rr.com 0.0% 141 60.5 61.5 59.8 89.6 3.6
7. UniversityCorpforAdvancedInterne 0.0% 141 57.8 58.6 56.9 97.8 5.3
8. et-7-3-0.80.rtsw.losa.net.intern 0.0% 141 61.3 61.4 59.9 91.6 3.5
9. 64.57.20.81 0.0% 141 66.4 66.3 62.2 125.0 5.0
10. dc-tus-agg3--lax-agg6-100ge.ceni 0.0% 141 66.6 67.1 65.6 124.9 5.1
11. dc-sdg-agg4--tus-agg3-100ge.ceni 0.0% 141 71.1 71.7 70.7 73.7 0.5
12. dc-ucsd-1--sdg-agg4.cenic.net 0.0% 141 70.5 70.9 65.9 85.2 2.1
13. nodem-core-6807-vlan2761-gw.ucsd 0.0% 140 71.0 75.0 69.0 385.9 27.6
14. ebu3b-6509-nodem-core-interconne 0.0% 140 71.7 72.4 70.8 86.6 2.1
15. amprgw.sysnet.ucsd.edu 56.1% 140 133.3 134.2 71.7 218.9 13.6
Antonio Querubin
e-mail: tony(a)lavanauts.org
xmpp: antonioquerubin(a)gmail.com
_________________________________________
44Net mailing list
44Net(a)hamradio.ucsd.edu
http://hamradio.ucsd.edu/mailman/listinfo/44net
12:28 p.m.
Hmm, looks like I have it too:
H:\>ping amprgw.sysnet.ucsd.edu -t
Pinging amprgw.sysnet.ucsd.edu [169.228.66.251] with 32 bytes of data:
Reply from 169.228.66.251: bytes=32 time=192ms TTL=49
Request timed out.
Reply from 169.228.66.251: bytes=32 time=252ms TTL=49
Request timed out.
Reply from 169.228.66.251: bytes=32 time=191ms TTL=49
Request timed out.
Reply from 169.228.66.251: bytes=32 time=252ms TTL=49
Request timed out.
Reply from 169.228.66.251: bytes=32 time=253ms TTL=49
Request timed out.
Reply from 169.228.66.251: bytes=32 time=191ms TTL=49
Request timed out.
Reply from 169.228.66.251: bytes=32 time=253ms TTL=49
Request timed out.
73,
LZ1ETE
On Tue, Aug 23, 2016 at 1:54 PM, R P <ronenp(a)hotmail.com> wrote:
> (Please trim inclusions from previous messages)
> _______________________________________________
> |-----------------------------------------------------------
> -------------------------------|
> | WinMTR statistics
> |
> | Host - % | Sent | Recv | Best |
> Avrg | Wrst | Last |
> |------------------------------------------------|------|---
> ---|------|------|------|------|
> | 192.168.1.1 - 0 | 19 | 19 | 1 |
> 3 | 7 | 3 |
> | No response from host - 100 | 4 | 0 | 0 |
> 0 | 0 | 0 |
> | hfa-hot-N.con.hotnet.net.il - 0 | 19 | 19 | 16 |
> 19 | 27 | 16 |
> | ae1.200.hfa.mx-hot-N.con.hotnet.net.il - 0 | 19 | 19 | 15 |
> 20 | 32 | 16 |
> | ae7.50.pt.mx-mx.con.hotnet.net.il - 0 | 19 | 19 | 18 |
> 21 | 34 | 21 |
> | ffm-b4-link.telia.net - 0 | 19 | 19 | 84 |
> 96 | 176 | 87 |
> | ffm-bb3-link.telia.net - 0 | 19 | 19 | 78 |
> 85 | 153 | 79 |
> | ffm-b10-link.telia.net - 0 | 19 | 19 | 76 |
> 88 | 175 | 79 |
> | ae11.edge4.Frankfurt.Level3.net - 0 | 19 | 19 | 73 |
> 81 | 153 | 78 |
> | No response from host - 100 | 4 | 0 | 0 |
> 0 | 0 | 0 |
> | CENIC.ear1.LosAngeles1.Level3.net - 0 | 19 | 19 | 255 |
> 313 | 497 | 274 |
> | dc-tus-agg3--lax-agg6-100ge.cenic.net - 0 | 19 | 19 | 258 |
> 313 | 498 | 273 |
> | dc-sdg-agg4--tus-agg3-100ge.cenic.net - 0 | 19 | 19 | 247 |
> 305 | 497 | 270 |
> | dc-ucsd-1--sdg-agg4.cenic.net - 0 | 19 | 19 | 247 |
> 306 | 498 | 270 |
> | nodem-core--mx0-30ge.ucsd.edu - 0 | 19 | 19 | 246 |
> 307 | 498 | 275 |
> | ebu3b-6509-720-vlan910-gw1.ucsd.edu - 0 | 19 | 19 | 247 |
> 305 | 497 | 270 |
> | No response from host - 100 | 4 | 0 | 0 |
> 0 | 0 | 0 |
> | No response from host - 100 | 4 | 0 | 0 |
> 0 | 0 | 0 |
> | amprgw.sysnet.ucsd.edu - 80 | 5 | 1 | 0 |
> 341 | 341 | 341 |
> |________________________________________________|______|___
> ___|______|______|______|______|
> WinMTR v0.92 GPL V2 by Appnor MSP - Fully Managed Hosting & Cloud
> Provider
>
>
>
> ________________________________
> From: 44Net <44net-bounces+ronenp=hotmail.com(a)hamradio.ucsd.edu> on
> behalf of Antonio Querubin <tony(a)lavanauts.org>
> Sent: Tuesday, August 23, 2016 3:14 AM
> To: AMPRNet working group
> Subject: Re: [44net] missing packets in to AMPRGW ?
>
> (Please trim inclusions from previous messages)
> _______________________________________________
> On Tue, Aug 23, 2016 at 12:56 PM, R P <ronenp(a)hotmail.com> wrote:
>
> > can anyone explain why i get every second ping missing packets from
> > AMPRGW ?
> >
> > it happen not only from my PC also from other places ...
>
> Maybe a load balancer that has ICMP blocked? Appears to be new behaviour
> though.
>
> Keys: Help Display mode Restart statistics Order of fields quit
> Packets Pings
> Host Loss% Snt Last Avg Best Wrst
> StDev
> 1. 142.254.191.93 0.0% 141 8.1 9.8 7.4
> 153.2 13.1
> 2. xe-0-0-2.kanhhiad01h.hawaii.rr.c 0.0% 141 20.4 45.3 10.3
> 461.3 68.1
> 3. agg36.milnhixd01r.hawaii.rr.com 0.0% 141 9.3 9.6 6.2
> 27.3 1.6
> 4. agg31.lsancarc01r.socal.rr.com 0.0% 141 59.3 58.0 53.3
> 89.2 3.1
> 5. bu-ether16.lsancarc0yw-bcr00.tbo 0.0% 141 60.8 65.3 60.0
> 75.7 2.6
> 6. 0.ae1.pr0.lax00.tbone.rr.com 0.0% 141 60.5 61.5 59.8
> 89.6 3.6
> 7. UniversityCorpforAdvancedInterne 0.0% 141 57.8 58.6 56.9
> 97.8 5.3
> 8. et-7-3-0.80.rtsw.losa.net.intern 0.0% 141 61.3 61.4 59.9
> 91.6 3.5
> 9. 64.57.20.81 0.0% 141 66.4 66.3 62.2
> 125.0 5.0
> 10. dc-tus-agg3--lax-agg6-100ge.ceni 0.0% 141 66.6 67.1 65.6
> 124.9 5.1
> 11. dc-sdg-agg4--tus-agg3-100ge.ceni 0.0% 141 71.1 71.7 70.7
> 73.7 0.5
> 12. dc-ucsd-1--sdg-agg4.cenic.net 0.0% 141 70.5 70.9 65.9
> 85.2 2.1
> 13. nodem-core-6807-vlan2761-gw.ucsd 0.0% 140 71.0 75.0 69.0
> 385.9 27.6
> 14. ebu3b-6509-nodem-core-interconne 0.0% 140 71.7 72.4 70.8
> 86.6 2.1
> 15. amprgw.sysnet.ucsd.edu 56.1% 140 133.3 134.2 71.7
> 218.9 13.6
>
>
> Antonio Querubin
> e-mail: tony(a)lavanauts.org
> xmpp: antonioquerubin(a)gmail.com
> _________________________________________
> 44Net mailing list
> 44Net(a)hamradio.ucsd.edu
> http://hamradio.ucsd.edu/mailman/listinfo/44net
>
3:06 p.m.
amprgw has an icmp response rate limit set to 1 per second.
If a bunch of people are triggering ICMP responses (by pinging
it, traceroute to it, etc) at the same time it will not respond
to all of them.
This is done via
sysctl net.inet.icmp.icmplim=1
sysctl net.inet.icmp.icmplim_output=1
The log shows a large number of 'limiting icmp ping response'
messages like the following:
Aug 23 06:40:01 <kern.crit> amprgw kernel: Limiting icmp ping response from 21 to 1
packets/sec
and tcpdump shows a LOT of icmp traffic.
As an experiment, I turned off icmp rate limiting for a brief
period and the ping response "loss" rate went to zero, which I
believe means that it's seeing a lot of traffic that would be
generating icmp responses if it were not limited.
- Brian
2804
days inactive
2804
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7 comments
4 participants
participants (4)
-
Antonio Querubin -
Brian Kantor -
R P -
Todor Kandev