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List:       keepalived-devel
Subject:    RE: [Keepalived-devel] More than 20 VIPs per vrrp_instance?
From:       "Ian Neubert" <ian () TWAcomm ! net>
Date:       2004-04-26 18:33:17
Message-ID: NCBBKKICOKHIPDGJPONNKEFBMGAC.ian () TWAcomm ! net
[Download RAW message or body]

Alexandre wrote:
> Neulinger, Nathan wrote:
> >What is the net effective difference in functionality between the two,
> >or is there one? Why not everything in _excluded?
>
> VRRP RFC include VIP in datagram, personally I recommand _excluded since
>
> only VRRP header is useful for driving the protocol.

Interesting. So the addresses included in the VRRP advert payload is just
fluff?

Thanks Nathan (and Alexandre) for the info. Using _excluded will definetly
clean up my config :)

.......................
Ian Neubert
Director of IS
TWAcomm.com, Inc.
http://www.twacomm.com/

> -----Original Message-----
> From: Neulinger, Nathan [mailto:nneul@umr.edu]
> Sent: Monday, April 26, 2004 11:28 AM
> To: Ian Neubert
> Cc: keepalived-devel@lists.sourceforge.net
> Subject: RE: [Keepalived-devel] More than 20 VIPs per vrrp_instance?
>
>
> Here's what Alexandre said when I asked a similar question:
>
>
> >What is the net effective difference in functionality between the two,
> >or is there one? Why not everything in _excluded?
>
> VRRP RFC include VIP in datagram, personally I recommand _excluded since
>
> only VRRP header is useful for driving the protocol.
>
>
> -- Nathan
>
> ------------------------------------------------------------
> Nathan Neulinger                       EMail:  nneul@umr.edu
> University of Missouri - Rolla         Phone: (573) 341-6679
> UMR Information Technology             Fax: (573) 341-4216
>
>
> > -----Original Message-----
> > From: Ian Neubert [mailto:ian@TWAcomm.net]
> > Sent: Monday, April 26, 2004 1:27 PM
> > To: Neulinger, Nathan
> > Cc: keepalived-devel@lists.sourceforge.net
> > Subject: RE: [Keepalived-devel] More than 20 VIPs per vrrp_instance?
> >
> > Neulinger, Nathan wrote:
> > > Use:
> > >
> > > virtual_ipaddress { } for a few of the addresses
> > >
> > > then put the rest in
> > >
> > > virtual_ipaddress_excluded { }
> >
> > Thanks for the info Nathan, that looks like what I want.
> >
> > Another few Q's related to that though: When would I want to
> > use a VIP over
> > using an E-VIP? Why are VIPs sent with the VRRP packet
> > adverts? Is there
> > some need to have them there that I should take into consideration?
> >
> > Thanks for your help.
> >
> > .......................
> > Ian Neubert
> > Director of IS
> > TWAcomm.com, Inc.
> > http://www.twacomm.com/
> >
> > > -----Original Message-----
> > > From: keepalived-devel-admin@lists.sourceforge.net
> > > [mailto:keepalived-devel-admin@lists.sourceforge.net]On Behalf Of
> > > Neulinger, Nathan
> > > Sent: Monday, April 26, 2004 11:13 AM
> > > To: Ian Neubert; keepalived-devel@lists.sourceforge.net
> > > Subject: RE: [Keepalived-devel] More than 20 VIPs per vrrp_instance?
> > >
> > >
> > > I was just recently bit by this...
> > >
> > > Use:
> > >
> > > virtual_ipaddress { } for a few of the addresses
> > >
> > > then put the rest in
> > >
> > > virtual_ipaddress_excluded { }
> > >
> > >
> > > ------------------------------------------------------------
> > > Nathan Neulinger                       EMail:  nneul@umr.edu
> > > University of Missouri - Rolla         Phone: (573) 341-6679
> > > UMR Information Technology             Fax: (573) 341-4216
> > >
> > >
> > > > -----Original Message-----
> > > > From: keepalived-devel-admin@lists.sourceforge.net
> > > > [mailto:keepalived-devel-admin@lists.sourceforge.net] On
> > > > Behalf Of Ian Neubert
> > > > Sent: Monday, April 26, 2004 12:50 PM
> > > > To: keepalived-devel@lists.sourceforge.net
> > > > Subject: [Keepalived-devel] More than 20 VIPs per vrrp_instance?
> > > >
> > > > A single vrrp_instance can have up to 20 VIPs, according to
> > > > the change log
> > > > for version 0.5.7 (2002-05-02).
> > > >
> > > > I have need for a vrrp_instance to have nearly 40 VIPs, so to
> > > > workaround the
> > > > limitation I just added another vrrp_instance for the extra
> > > > VIPs. Is there
> > > > any reason this would not be good? Is there a better way to
> > > > implement this
> > > > many VIPs on one interface?
> > > >
> > > > TIA.
> > > >
> > > > .......................
> > > > Ian Neubert
> > > > Director of IS
> > > > TWAcomm.com, Inc.
> > > > http://www.twacomm.com/
> > > >
> > > >
> > > >
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