The Deliverer's Knowledge: What's the max. number of IP instances per NIC?

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The Deliverer's Knowledge: What's the max. number of IP instances per NIC?

Wednesday, October 28. 2009

A foreword by Jörg: This is the first blog entry written by Heiko. "the deliverer's knowledge" is just a working title and it's referring to the fact, that Heiko delivers vast knowledge on a daily basis at various customer sites. I just add the c0t0d0s0.org uncoporate non-design. So this is Heiko direct and unfiltered. Please welcome him. PS: Another substantially longer article will be online soon.

Take a look at:

# ndd -get /dev/ip ip_addrs_per_if 256

That's the default. You can set the count up to 8191. (Btw: That's already the max. number of local zones per global zone)

# ndd -set /dev/ip ip_addrs_per_if 8191

But keep in mind, the newly set value isn't boot persistent, so you should set it during the system startup. For example by creating a transient SMF service or an init.d-script

Posted by Heiko Stein in English, Solaris, Sun/Oracle, the deliverer's knowledge at 21:42 | Comments (9) | Trackbacks (0)

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How about Vlan interfaces?
Default 256 per "Hardware" interface or 256 IPs per VLAN Interface?

#1 Ralph Gessner on 2009-10-28 23:10 (Reply)

I think it's for both. Because the variable controlling a ip-stack parameter and the stack is available for all interfaces.(imho ...)

#1.1 Heiko S. on 2009-10-29 18:10 (Reply)

Welcome!

Isn't it possible to set this up in /etc/system as well? I would prefer that over setting up some init.d script

#2 Jeppe Toustrup (Homepage) on 2009-10-29 09:41 (Reply)

A 'set ip:ip_addrs_per_if=8192' in /etc/system should do the same.
(Not tested)

#2.1 Ralph Gessner on 2009-10-29 09:56 (Reply)

Putting it in /etc/system is feasible, too. I prefer a script. I put such stuff in a single transient service at the side of other tuning configurations.

#2.1.1 Joerg M. (Homepage) on 2009-10-29 10:09 (Reply)

An rc-script or a smf-service should be the better way. Any changes in /etc/system needs a reboot for activate. (and adb/mdb -kw ... isn't a good way for a productive environment )

#2.1.1.1 Heiko S. on 2009-10-29 14:46 (Reply)

Wofür steht eigentlich 'ndd' ?

#3 SK on 2009-10-29 09:47 (Reply)

Gute Frage ... habe ich noch nie nachgeguckt? Netzwerkdaddeldings?

#3.1 Joerg M. (Homepage) on 2009-10-29 15:19 (Reply)

mhm vielleicht für "Network Datalink Device"?! Wobei mir die Version von Joerg doch besser gefällt

#3.1.1 brocki on 2009-11-01 00:03 (Reply)

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