More ramblings from the annoying route engine guy...

Pete pete at
Fri Oct 22 06:54:37 PDT 2004

Matthew Dillon wrote:
:So, I've been slowly making progress getting my route schema working 
:within LWIP.  This is not the way to learn C.  In any case, after 
:chatting on #dragonflybsd I found out that many people are 
:interested in something that rolls vrrp/carp/etc functionality in 
:with loadbalancing, so loosing an interface doesn't drop a box, etc. 
:I just happen to have been spending the last few days pounding on 
:Extreme's and wonder if their schema could be of use.
:Extreme's are an entirely virtual interface driven system.  For 
:simplicity they call their interface's vlans, although they have 
:nothing to 802.1q.  IP interfaces are defined by individual vlans. 
:These vlans are then bound to one or more physical interfaces.  This 
:lets you literally bind say, to 4 gigabit ports.  It 
:might be cpu intensive, but instead of layering on carp/vrrp could 
:this sort of schema work and allow even greater flexibility?
:Joshua Coombs 
Hi, would this not be covered fairly well by a combination of Link 
Aggregation ( Spanning Tree along with carp. That way you have 
your 4 gige ports in a aggregate group with a second redundant aggregate 
group for failover. Then having another layer of failover with carp, or 
something along those lines. It would need some modifications to the 
code but i think less than the schema you envisage.


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