How to configure ONOS Reactive Forwarding LLDP timers?

[DeJuan]

We're interested in changing both the time interval for LLDP issues and the LLDP link aging time. Usualy, the aging time is some multiple of the issuance time but we'd really like to change the two independently. Can we do that with a configuration file somewhere in the tar.gz extracted compilation for ONOS 1.6.0? If we can, would you please point me to where the relevant files are? If not, is it possible if we build it with the source code? If so, where is the file within the source-code based build? 

[DeJuan]

Oh, and we would like the setting change to be persistent across reboots (and rebuilds if source); please include how to ensure that if it isn't automatically enforced.

[DeJuan]

As for the source, the code for it is in https://github.com/opennetworkinglab/onos/blob/master/providers/lldp/src/main/java/org/onosproject/provider/lldp/impl/LldpLinkProvider.java . Here is the relevant section of code for both:

private static final String PROP_PROBE_RATE = "probeRate";
	private static final int DEFAULT_PROBE_RATE = 3000;
	@Property(name = PROP_PROBE_RATE, intValue = DEFAULT_PROBE_RATE,
	label = "LLDP and BDDP probe rate specified in millis")
	private int probeRate = DEFAULT_PROBE_RATE;
	private static final String PROP_STALE_LINK_AGE = "staleLinkAge";
	private static final int DEFAULT_STALE_LINK_AGE = 10000;
	@Property(name = PROP_STALE_LINK_AGE, intValue = DEFAULT_STALE_LINK_AGE,
	label = "Number of millis beyond which links will be considered stale")
	private int staleLinkAge = DEFAULT_STALE_LINK_AGE;

I still do not know how to do it on the tar.gz build.

[DeJuan]

In the zip, there seems to be a configuration file at $ONOS_HOME/apache-karaf-3.0.5/data/cache/bundle6/data/config/org/onosproject/provider/lldp/impl/LldpLinkProvider.config,

but the file is nearly empty and doesn't seem to have the variables I would like to change. Would adding the lines such as DEFAULT_STALE_LINK_AGE = 10000; result in the desired effect?

[Charles Chan]

Hi,

This attribute is a component config, which allows you to change the value in runtime without re-compiling the source code.

Check this page for more detail: https://wiki.onosproject.org/display/ONOS/Component+Configuration

Charles

On Wed, Jul 20, 2016 at 10:41 AM DeJuan <mitreda...@gmail.com> wrote:

In the zip, there seems to be a configuration file at $ONOS_HOME/apache-karaf-3.0.5/data/cache/bundle6/data/config/org/onosproject/provider/lldp/impl/LldpLinkProvider.config,

but the file is nearly empty and doesn't seem to have the variables I would like to change. Would adding the lines such as DEFAULT_STALE_LINK_AGE = 10000; result in the desired effect?

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[DeJuan]

Thank you very much, that was the information we needed, I think. 

[DeJuan]

Actually, how would we change the default value? That's the last aspect. We tested changing the value and that works as we needed it to, so if you can either explain how to change the default dynamically or explain why it can't be done, I'll mark this as complete. Thank you for your time. 

[Charles Chan]

Hi,

I think the change you made to component config is persistent during ONOS restart - but I am not 100% sure.

Probably other people on the list can confirm.

Charles

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[Thomas Vachuska]

That is correct. Component config changes are persisted across restarts; not across re-installs however.

Thomas

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