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radvd-project / radvd

radvd | Official repository: https://github.com/radvd-project/radvd
https://radvd.litech.org/
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queries: controlling MinRtrAdvInterval and MaxRtrAdvInterval values #60

Closed athreyaDell closed 8 years ago

athreyaDell commented 8 years ago

Hello,

My current /etc/radvd.conf looks like this:

interface eth0.4004 { AdvSendAdvert on; IgnoreIfMissing on; MinRtrAdvInterval 3; MaxRtrAdvInterval 10; prefix fde1:53ba:e9a0:de24::/64 { AdvOnLink on; AdvAutonomous on; AdvRouterAddr on; }; };

I have 2 centos running on arm machines which are connected. Radvd is ON on first m/c and OFF on second.

  1. Radvd is being used to receive the prefix values to be set. However I find that I am not able to control the MinRtrAdvInterval and MaxRtrAdvInterval of the router advertisements. I can control them only when AdvAutonomous is turned OFF.
  2. When I turn OFF AdvAutonomous, I see that the router advertisement prefix value is not. (but if I turn AdvAutonomous ON,prefix values are set. Is there a way I could have the AdvAutonomous OFF and still be able to set set the prefix ip6 values ?

Thanks, Athreya

reubenhwk commented 8 years ago

How are you trying to control MinRtrAdvInterval and MaxRtrAdvInterval and what indication do you have it's not working?

On Wed, Sep 21, 2016 at 9:45 AM, athreyaDell notifications@github.com wrote:

Hello,

My current /etc/radvd.conf looks like this:

interface eth0.4004 { AdvSendAdvert on; IgnoreIfMissing on; MinRtrAdvInterval 3; MaxRtrAdvInterval 10; prefix fde1:53ba:e9a0:de24::/64 { AdvOnLink on; AdvAutonomous on; AdvRouterAddr on; }; };

I have 2 centos running on arm machines which are connected. Radvd is ON on first m/c and OFF on second.

Radvd is being used to receive the prefix values to be set. However I find that I am not able to control the MinRtrAdvInterval and MaxRtrAdvInterval of the router advertisements. I can control them only when AdvAutonomous is turned OFF.

  1. When I turn OFF AdvAutonomous, I see that the router advertisement prefix value is not. (but if I turn AdvAutonomous ON,prefix values are set. Is there a way I could have the AdvAutonomous OFF and still be able to set set the prefix ip6 values ?

Thanks, Athreya

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athreyaDell commented 8 years ago

I am trying to control MinRtrAdvInterval and MaxRtrAdvInterval using the configuration file /etc/radvd.conf . I am doing a tcpdump on the interface to analyze the ipv6 advertisements. Irrespective of the rate mentioned in the config file I see the router advertisements every second. This output is with the config file description shown above.

output: 03:01:47.390000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56 03:01:48.820000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56 03:01:49.000000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56 03:01:50.980000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56

Please let me know if I am doing it right. Unless I turn "AdvAutonomous" OFF , I am unable to control the rate at which the advertisements are sent. Thanks.

reubenhwk commented 8 years ago

This sounds like a bug that was recently fixed. Which version are you using?

Sent from my iPhone

On Sep 21, 2016, at 11:27 AM, athreyaDell notifications@github.com wrote:

I am trying to control MinRtrAdvInterval and MaxRtrAdvInterval using the configuration file /etc/radvd.conf . I am doing a tcpdump on the interface to analyze the ipv6 advertisements. Irrespective of the rate mentioned in the config file I see the router advertisements every second. This output is with the config file description shown above.

output: 03:01:47.390000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56 03:01:48.820000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56 03:01:49.000000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56 03:01:50.980000 IP6 fe80::b283:feff:fef2:8a76 > ff02::1: ICMP6, router advertisement, length 56

Please let me know if I am doing it right.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or mute the thread.

athreyaDell commented 8 years ago

gotcha! Now it makes sense! its 2.11 version. Good that I contacted regarding this. Else I would presume I am configuring wrong. Thank you!!

I am trying to reproduce an issue(high cpu utilization and memory leak over time) which happens with lldpd package when run with radvd older version. Could you please tell me the maximum rate at which radvd 2.14 can operate. From my understanding its MinRtrAdvInterval 3 sec and MaxRtrAdvInterval 10 sec. Can I go lower than that ?