[c-nsp] How does IOS do loadshaing with ECMP?
Sukumar Subburayan
sukumars at cisco.com
Mon Nov 20 12:00:14 EST 2006
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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