Cisco Systems CSR 1000V manual License-Based Restriction on Aggregate Bandwidth, 13-6

Chapter 13 Managing Cisco CSR 1000V Licenses

Managing Technology Package and Throughput Licenses

License-Based Restriction on Aggregate Bandwidth

The Cisco CSR 1000V includes a license-based performance limiter that may restrict the aggregate bandwidth of the router’s interfaces. For example, if a 50 Mbps license is installed, then a maximum of 25 Mbps of bidirectional traffic is possible.

The performance limiter regulates the performance on all non-management interfaces for both priority traffic and non-priority traffic. Throughput limits are checked globally, not on a per-interface basis. The performance limiter does not distinguish between different types of traffic, such as for IPSec or NAT. If the throughput level is exceeded, then packets may get discarded.

The performance limiter does not affect traffic through the GigabitEthernet 0 management interface.

Figure 13-1shows how the performance limiter, also known as a traffic shaper, works. In this example, the four interfaces on the Cisco CSR 1000V are passing an aggregated traffic level of 60 Mbps. Because this exceeds the 50 Mbps license-enforced maximum throughput, 10 Mbps of traffic is discarded.

Figure 13-1 Cisco CSR 1000V Performance-Based Limiter Example

G1 --> G3: 15

G2 --> G4: 20

G3 --> G2: 10

G4 --> G3: 15

15 Mbps

20 Mbps

G1

G2

Cisco CSR 1000V

SHAPER

(50)

G3

G4

10Mbps

15Mbps

Total: 60 Mbps

10 Mbps (60-50)

360467

To check the license-based performance limiter value, use the following command for your interface:

Router# show platform hardware qfp active feature qos queue out int GigabitEthernet1 hier

det inc max:
orig_max	: 0	,	max: 33333	child policy-map
orig_max	: 0	,	max: 500000	parent policy-map
orig_max	: 0	,	max: 1050000000	interface rate limiter
orig_max	: 0	,	max: 2500000	license performance limiter
orig_max	: 0	,	max: 10000000000	entry for ROOT/SIP infra (ignore rate)

The value for the license performance limiter field should match the current maximum throughput level as shown with the show platform hardware throughput level command.

Note The license-based limiter includes an extra scheduler node in the default HQF hierarchy. The Cisco CSR 1000V does not provide an option to detect congestion for a particular node in the HQF hierarchy.

For more information about verifying the VM performance indicators, see your hypervisor documentation.

To verify the actual throughput, use the following command:

Router# show platform hardware qfp active datapath utilization summary

	CPP 0:	5 secs	1 min	5 min	60 min
	Cisco CSR 1000V Series Cloud Services Router Software Configuration Guide
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