[c-nsp] 3850?

[Nikolay Shopik]

3850 can do flexible netflow but limited to 8k/16k flows ingress/egress. So pretty much only sampled netflow. 

http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3850/software/release/3se/flexible_netflow/configuration_guide/b_fnf_3se_3850_cg/b_fnf_3se_3850_cg_chapter_010.html#reference_C63398C01C7C41E1AEC2BCEE4915A909

> On 9 апр. 2015 г., at 18:17, Adam Greene <maillist at webjogger.net> wrote:
> 
> Hi all,
> 
> 
> 
> We're looking to upgrade some old 3750's and 3750G's whose input queues
> don't seem to be able to pass 75Mbps without choking: 
> 
> 
> 
> (on a 3750G)
> 
> Last clearing of "show interface" counters 21w5d
> 
> Input queue: 1/75/5870052/0 (size/max/drops/flushes); Total output drops:
> 0).
> 
> 
> 
> We need the switches to support:
> 
> -          basic QoS policies (mainly, VoIP and routing protocol
> prioritization)
> 
> -          Flexible NetFlow with NBAR
> 
> -          125Mbps aggregate throughput via any given interface now, and
> more in the future. If I had to guess, 450Mbps aggregate within 3 years
> 
> -          OSPF & BGP
> 
> 
> 
> We don't anticipate stacking these.
> 
> 
> 
> We're considering:
> 
> -          WS-C3850-24T-E (modular)
> 
> -          WS-C3650-24TD-E (fixed; 2x10G uplinks)
> 
> -          WS-C3650-24TS-E (fixed; 4x1G uplinks)
> 
> -          WS-C3560X-24T-E (modular)
> 
> 
> 
> I like the idea of the switch being modular, in case we want to put in 10G
> modules later on, but realistically, can any of these switches even push
> 1Gbps reliably? After seeing "gigabit" 3750s balk at such low traffic
> levels, I wonder how much we can really expect any of these switches to
> push.
> 
> 
> 
> Of all the options, the WS-C3850-24T-E seems the most flexible and probably
> most powerful. I was feeling enthusiastic about the 3560X until someone told
> me that Flexible NetFlow is supported, but only if you buy the 10G module,
> which costs as much as the switch itself.
> 
> 
> 
> Do you think we're on the right track? Is the WS-C3850-24T-E probably the
> best fit? How much traffic have you all seen it push in the real world?
> 
> 
> 
> Thanks for sharing your experience.
> 
> 
> 
> Adam
> 
> 
> 
> 
> 
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