[Xorp-hackers] XORP enhancement for wireless mesh network routing

[Jiangxin Hu]

OK. Actually I did that first before adding the interface flag.

Jiangxin

-----Original Message-----
From: Ben Greear [mailto:greearb at candelatech.com] 
Sent: Friday, June 01, 2012 3:12 PM
To: Jiangxin Hu
Cc: xorp-hackers at icir.org
Subject: Re: [Xorp-hackers] XORP enhancement for wireless mesh network
routing

On 06/01/2012 12:07 PM, Jiangxin Hu wrote:
>>> First, I believe it would be possible to want this feature enabled 
>>> on
> non-wireless interfaces, so maybe instead of having>>  a 'wireless'
> attribute, we could call it something like 'allow-disconnected-routes' 
> or something like that.
>>> And maybe we should just always allow those routes to be added and 
>>> not
> even bother with all the framework to set the flag?
>
> Agree if we allow such routes for wired network. I don't know it is 
> meaningful for wired network or not.
>
>>> At least some of the changes do not appear directly related to the
> 'wireless'
>>> flag.  Maybe there was some cleanup included?  If so, it would be 
>>> nice if
> that were a separate patch.
>
> There are two things in the code changes:
> 1. the parameter 'wireless' (fea, ifmgr, mirror, etc.) 2. the 
> execution part (fea, rib)
>     in order to insert such route into kernel, the add route function 
> call must declare such route as scope-link type route
>     also, theoretically, the route -- destination net: 192.168.0.0/24 
> next
> hop: 192.168.0.1 interface: eth0 is a valid route
>     for node 1 configure such as eth0:10.0.0.1/24. however, I don't 
> think any wireless routing protocol generated such rotue now.

I think any interface can be used in a mesh, even if it is mostly wireless
devices in the real world.  If the routing protocol thinks a route should be
added, and the kernel doesn't complain, I see no reason for FEA to
complain...

> * This work is done on Fedora core 16, so other system may not work.
> * 'wireless' parameter is for interface only, any vif under the 
> interface will be treated as wireless vif

Would you care to re-do the patch so that you just change FEA to always
allow these types of routes, and skip adding the new interface flag (and all
the related xrl stuff)?

Thanks,
Ben


--
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com