nexus N3K-C3064PQ vs juniper ex4500 in order to protect against ddos

[piotr.1234 at interia.pl (Pedro)]

Hello,

I have some idea to put switch before bgp router in order to terminate 
isp 10G uplinks on switch, not router. Main reason is that could be some 
kind of 1st level of defence against ddos, second reason, less 
important, save cost of router ports, do many port mirrors.

I think about N3K-C3064PQ or Juniper ex4500 because there are quite 
cheap and a lot of on Ebay.

I would like on nexus or juniper try use some feature:

-  limit udp, icmp, bum packets (bandwith,pps) at ingress tagged port or 
vlan
-  create counters: passed and dropped packets, best way to get this 
counters via snmp oid, sent snmp traps, syslog etc in order to monitor
or even as a action shut down port
-  port mirror from many ports/vlans to multiple port (other anty ddos 
solutions)
-  limited bgp but with flowspec to comunicate with another anty ddos 
devices

I'm also wondering how this feature above impact on cpu/whole switch. It 
can be some performance degradation ot all of this feature are done in 
hardware, with wirespeeed ? Which model will better to do this ?

Thanks for any advice,
Pedro

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