[c-nsp] How does IOS do loadshaing with ECMP?

[Sukumar Subburayan]

Sup720 supports load-balancing using src_ip,dst_ip+universal_router_id and 
this is the default.

In this particular case below, you have:

mls ip cef load-sharing full simple

'mls ip cef load-sharing full' lets you use 'src_ip,dst_ip+l4 ports' 
instead of the univeral_router_id

However, the addition of 'simple' keyword, allows hardware to use 
the same number of adjacencies as in the IOS CEF adjacency.

Without the 'simple' keyword the HW installs additional adjacency entries 
to avoid platform polarization.

sukumar



On Mon, 20 Nov 2006, Phil Bedard wrote:

> That command tells the box to use L4 port information in making load
> balancing
> decisions.   I think if you just set that back to the default it will
> only use
> the source/destination hash like you are used to.
>
> Phil
>
>
> On Nov 20, 2006, at 9:45 AM, Joe Shen wrote:
>
>> mls ip cef load-sharing full simple
>
>
>
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