[c-nsp] C3560X Layer 3 throughput

David Wilkinson cisco-nsp at noroutetohost.net
Tue Feb 16 07:58:45 EST 2016

Phil, That is what I expected as well.

Running the universal image with the ipservices license.

Nick, Nothing facny like tunnels, very basic config. running IOS, not XE

Cisco IOS Software, C3560E Software (C3560E-UNIVERSALK9-M), Version 
15.0(2)SE9, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Tue 01-Dec-15 06:42 by prod_rel_team

ROM: Bootstrap program is C3560E boot loader
BOOTLDR: C3560E Boot Loader (C3560X-HBOOT-M) Version 12.2(53r)SE2, 

cisco WS-C3560X-24 (PowerPC405) processor (revision K0) with 262144K 
bytes of memory.

Last reset from power-on
1 Virtual Ethernet interface
1 FastEthernet interface
28 Gigabit Ethernet interfaces
2 Ten Gigabit Ethernet interfaces



On 16/02/2016 12:28, Elmar K. Bins wrote:
> p.mayers at imperial.ac.uk (Phil Mayers) wrote:
>>> What is the real world expected throughput on the C3560X devices when
>>> doing basic Layer 3 routing?
>> I'd expect it to be able to do line-rate with almost no CPU - it should be
>> forwarding in hardware.
> That was my experience with all Cisco L3 switches (35x, 375x, et al)
> - as long as nothing gets punted to CPU (due to, e.g., netflow f***ups
> etc.), forwarding is line rate, meaning your throughput depends on the
> size of your packets.
>> Check you have the IP rather than LAN image running, that you've got an
>> appropriate SDM template for routing, that you haven't got any unsupported
>> features enabled, and that you aren't otherwise inducing it to punt to CPU
>> e.g. by getting a lot of IP redirects/ICMP unreach or other such activity.
> The SDM template should not have too much of an influence, unless you
> are constantly timing out stuff.
> El.
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