[c-nsp] mpls/ip load balancing

[Christian Meutes]

Hey,

--On Tuesday, November 25, 2008 09:51:13 -0800 Marlon Duksa 
<mduksa at gmail.com> wrote:

> 2) In this case, LIB is consulted - what is hash based on? IP packets may
> be encapsulated few times over in this case (VLAN, another MPLS
> header...)

usually the router consults the header under the bottomost label. If the
packet is an IPv4 packet it uses the plattform dependent cef load-sharing
algorithm. If it can't detect an IP packet (AToM i.e.) it uses the
bottommost label to load-share across equal-cost pathes which is usually the
VC label and results in all frames/cells for same customer-VC routed over
the same path.


Cheers,
christian