[OSL | CCIE_RS] 2811s in Ultimate Lab Preparation WB

[Kambiz Agahian]

Hi guys, 
I was just wondering if possibly could deploy legacy 2520s instead of all those 
expensive 2811s. 
Are they able to be useful in 80-90% of our scenarios ? or they just start 
lagging from the beginning ?
 
Cheers,