[c-nsp] per-packet load sharing.

[Rodney Dunn]

On Mon, Dec 10, 2007 at 11:14:37AM +0300, Raymond Macharia wrote:
> hi virendra,
> 
> Per packet load sharing is CPU intensive

CPU intensive for who?


> and if you are running something
> like voice then it is not recommended that you run per packet.
> Even with per packet you will never get exact load sharing for both links.
> 
> Best Regards
> 
> Raymond
> 
> On Dec 10, 2007 4:39 AM, virendra rode // <virendra.rode at gmail.com> wrote:
> 
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
> >
> > Hi,
> >
> > I have a GRE tunnel configured on a L3 device running ospf w/ cef
> > enabled which ties into two edge routers in a dual-isp setup.
> >
> >
> > L3 switch#
> >
> > int tun0
> > ip add 10.0.0.1 255.255.255.252
> > tunnel source 192.168.0.1
> > tunnel destination 192.168.2.1
> >
> > router ospf 100
> > network x.x.x.x y.y.y.y area 0
> >
> > ip route x.x.x.x y.y.y.y 10.0.0.2
> >
> >
> > In order to distribute traffic (load-sharing) across two links I'm
> > looking at enabling equal cost traffic (per-packet load sharing) going
> > out both serial links as their data processing is overloading one link.
> > The equal cost routes with CEF default load sharing is not distributing
> > the load over the 2 links as expected.  MLPPP is not an option for
> > budget reasons hence I'm looking at doing per-packet.
> >
> >
> > router-1#
> > ip cef (enabled globally)
> > ip cef load-sharing algorithm original
> >
> > fa0/0 connected to L3 on vlan5
> >
> > interface Serial0/0/0:0
> > bandwidth 1544
> > no ip address
> > encapsulation frame-relay
> > frame-relay lmi-type cisco
> > ip load-sharing per-packet
> >
> >
> > interface Serial0/0/0:0.100 point-to-point
> > bandwidth 1544
> > ip address x.x.x.x y.y.y.y
> > frame-relay interface-dlci 100
> >
> >
> > router-2#
> > ip cef (enabled globally)
> > ip cef load-sharing algorithm original
> >
> > fa0/0 connected to L3 on vlan5
> >
> > interface Serial0/0/0:0
> > bandwidth 1544
> > no ip address
> > encapsulation frame-relay
> > frame-relay lmi-type cisco
> > ip load-sharing per-packet
> >
> >
> > interface Serial0/0/0:0.200 point-to-point
> > bandwidth 1544
> > ip address x.x.x.x y.y.y.y
> > frame-relay interface-dlci 200
> >
> >
> > Any recommendation and /or feedback will be appreciated.
> >
> >
> >
> > regards,
> > /virendra
> > -----BEGIN PGP SIGNATURE-----
> > Version: GnuPG v1.4.2.2 (GNU/Linux)
> > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
> >
> > iD8DBQFHXJi6pbZvCIJx1bcRAhA+AJwOmJrc51G2t+Z21SJNrh6XapMA9gCgsz40
> > hdhegCO5uU6vhlVTY1NyaaA=
> > =MgKh
> > -----END PGP SIGNATURE-----
> > _______________________________________________
> > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > archive at http://puck.nether.net/pipermail/cisco-nsp/
> >
> 
> 
> 
> -- 
> Raymond Macharia
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/