I have been reading about oversubscription rates in certain documents, but i cant get an exact idea what does it mean.
What exactly does it indicate when we say oversubscription rate is 1:2 or so.
It would be helpful if this can be explained to get the idea.
Thanks in advance
Have a look at table-1 in this link. Lets look at the 8 port 10Gig module. The switch fabric connection for the 6500 to this module is at 40Gbps. If you use all 8 ports at 10Gig speed (line rate) you need an 80Gig switch fabric connection. So, since you have 40Gbps backplane and 8 port 10Gig, the module is 2:1 over subscribed.
8X10=80 but the switch fabric is 40.
Does it make scene?