[c-nsp] CRS PRP management eth interface limits

[Valeriu Vraciu]

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Hello,

Are there any limitations (rate limits) for traffic, applied to
management Ethernet interface of a CRS3 PRP (Performance Route
Processor) ? Temporarily changing those limits, if possible, would be
great for our experiment. I was not able to find related information
while searching (Cisco, Google), so any hint is appreciated.

What I try to achieve is to fill a 100 Gbps circuit between 2 CRSs for
50% or more. Using MGEN on a laptop with gigabit eth and a routing
loop this probably can be done. The problem is that each of the 2
routers has at this moment only 100G interfaces, so the only way to
inject traffic is through management eth.
What happens is that the traffic on this interface does not exceed the
following values (bps and pkts/s), no matter how much I increase MGEN
parameters above 40000 UDP pkts/s (each packet 1460 bytes):

input:  480634000 bps, 40000 pkts/s
output:    880000 bps,  1000 pkts/s (these are merely ICMP unreachables)


MGEN was run like this:

mgen event "ON 1 UDP DST 192.168.255.1/5000 PERIODIC [PKTS 1460]"

where PKTS was 10K, 20K, 40K, 60K and 80K. Traffic on 100G link was
growing until it reached and remained at about 15 Gbps for 40K and
above. Achieved maximum traffic was 30 Gbps (15 Gbps for each PRP eth
interface, 2 x PRP on each router).


Regards.
- -- 
Valeriu Vraciu
RoEduNet Iasi
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