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On 19 Jun 2016, at 6:05 AM, Mikael Abrahamsson swmike@swm.pp.se wrote:
On Fri, 17 Jun 2016, cidr-report@potaroo.net wrote:
TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 202.65.32.0/21 28086 0.8% AS10131 -- CKTELECOM-CK-AP Telecom Cook Islands, CK 2 - 110.170.17.0/24 21868 0.7% AS134438 -- AIRAAIFUL-AS-AP Aira & Aiful Public Company Limited, TH 3 - 123.231.192.0/24 21562 0.7% AS133841 -- IDOLA-BROADBAND-AS-ID INDONESIA BROADBAND ACCESS - ANYWHERE, ID 4 - 93.181.192.0/19 20895 0.6% AS13118 -- ASN-YARTELECOM Verhnevolzhsky branch, RU 5 - 123.231.206.0/24 19170 0.6% AS133841 -- IDOLA-BROADBAND-AS-ID INDONESIA BROADBAND ACCESS - ANYWHERE, ID 6 - 123.231.193.0/24 19082 0.6% AS133841 -- IDOLA-BROADBAND-AS-ID INDONESIA BROADBAND ACCESS - ANYWHERE, ID 7 - 195.128.159.0/24 15455 0.5% AS56636 -- ASVEDARU , RU 8 - 192.254.88.0/24 15452 0.5% AS21859 -- ZNET - Zenlayer Inc, US 9 - 185.11.121.0/24 14957 0.5% AS202105 -- DSP-AS , SA
Everyone of these prefixes have managed to average one update per 40 seconds during a week, or worse. How is that even possible? Yes, I know we don't generally have dampening anymore, but geez, that's a lot of updates.
In the case of Cook Islands Telecom the problem is not directly with them - its their one-up upstream Spark NZ (AS4648) who appears to be flicking this route across a number of transit upstreams (http://bgpupdates.potaroo.net/cgi-bin/per-prefix?prefix=202.65.32.0.21)
Geoff

Hello Geoff and all,
Thank you for pointing it out, I must say I don't read many of the until you brought this up.
I also wonder if someone is seeing what you have mentioned. Again, this week shows similar thing with these updating about two-times per minute:
TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 93.181.192.0/19 22303 0.6% AS13118 -- ASN-YARTELECOM Verhnevolzhsky branch, RU 2 - 110.170.17.0/24 22036 0.6% AS134438 -- AIRAAIFUL-AS-AP Aira & Aiful Public Company Limited, TH 3 - 103.242.52.0/22 20105 0.6% AS131390 -- ECOMVIET-AS-VN Vietnam E-commerce Development Centre, VN
As you have mentioned that generally no more dampening. It would be nice if someone could contact these operators and let them know. Is there a mechanism in place in contacting the admin of these AS/prefixes or their upstream? Should there be one?
I also wonder about the general cause of these high-frequency updates. Is it from router processing overload, bug in the router, simply poor connectivity or other reasons?
ram
On Sun, Jun 19, 2016 at 4:22 AM, Geoff Huston gih@apnic.net wrote:
On 19 Jun 2016, at 6:05 AM, Mikael Abrahamsson swmike@swm.pp.se wrote:
On Fri, 17 Jun 2016, cidr-report@potaroo.net wrote:
TOP 20 Unstable Prefixes Rank Prefix Upds % Origin AS -- AS Name 1 - 202.65.32.0/21 28086 0.8% AS10131 -- CKTELECOM-CK-AP Telecom
Cook Islands, CK
2 - 110.170.17.0/24 21868 0.7% AS134438 -- AIRAAIFUL-AS-AP Aira &
Aiful Public Company Limited, TH
3 - 123.231.192.0/24 21562 0.7% AS133841 -- IDOLA-BROADBAND-AS-ID
INDONESIA BROADBAND ACCESS - ANYWHERE, ID
4 - 93.181.192.0/19 20895 0.6% AS13118 -- ASN-YARTELECOM
Verhnevolzhsky branch, RU
5 - 123.231.206.0/24 19170 0.6% AS133841 -- IDOLA-BROADBAND-AS-ID
INDONESIA BROADBAND ACCESS - ANYWHERE, ID
6 - 123.231.193.0/24 19082 0.6% AS133841 -- IDOLA-BROADBAND-AS-ID
INDONESIA BROADBAND ACCESS - ANYWHERE, ID
7 - 195.128.159.0/24 15455 0.5% AS56636 -- ASVEDARU , RU 8 - 192.254.88.0/24 15452 0.5% AS21859 -- ZNET - Zenlayer Inc, US 9 - 185.11.121.0/24 14957 0.5% AS202105 -- DSP-AS , SA
Everyone of these prefixes have managed to average one update per 40
seconds during a week, or worse. How is that even possible? Yes, I know we don't generally have dampening anymore, but geez, that's a lot of updates.
In the case of Cook Islands Telecom the problem is not directly with them
- its their one-up upstream Spark NZ (AS4648) who appears to be flicking
this route across a number of transit upstreams ( http://bgpupdates.potaroo.net/cgi-bin/per-prefix?prefix=202.65.32.0.21)
Geoff
apops mailing list apops@apops.net https://mailman.apnic.net/mailman/listinfo/apops Website: www.apops.net

On 9/Jul/16 06:01, Ram Narula wrote:
I also wonder about the general cause of these high-frequency updates. Is it from router processing overload, bug in the router, simply poor connectivity or other reasons?
Generous redistribution of the IGP into BGP can cause this.
Mark.

Is this problem something that should be addressed considering that the number of high frequency updates could be happening from "more" prefixes within short time period? What could be the potential damaging effect? What are the chances of that happening?
Or it's ok.. no problem.. nevermind? : -)
On Sat, Jul 9, 2016 at 4:27 PM, Mark Tinka mark.tinka@seacom.mu wrote:
On 9/Jul/16 06:01, Ram Narula wrote:
I also wonder about the general cause of these high-frequency updates. Is it from router processing overload, bug in the router, simply poor connectivity or other reasons?
Generous redistribution of the IGP into BGP can cause this.
Mark.

On Wed, Jul 13, 2016 at 7:54 AM, Ram Narula ram@pluslab.com wrote:
Is this problem something that should be addressed considering that the number of high frequency updates could be happening from "more" prefixes within short time period? What could be the potential damaging effect? What are the chances of that happening?
Or it's ok.. no problem.. nevermind? : -)
is it nice for people to shout in a closed room? making a bunch of global noise for no real purpose is surely unknid, is it going to break 'everything' or 'soemthing'? sure... something somewhere will be unhappy. Maybe eveyrone should restart using damping?
Activity Summary
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