Cisco Cisco Application Extension Platform for SRE

The following systtat commands are available from the restricted shell:

iostat—Reports CPU statistics and input/output statistics for devices, partitions and network 
filesystems.

mpstat—Reports individual or combined processor-related statistics.

pidstat—Reports statistics for Linux tasks (processes) such as I/O, CPU, memory usage.

Traffic Filtering, and Packet Analysis with Cisco AXP are explained in the following sections:

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RITE (Router IP Traffic Export) is a Cisco IOS software export tool that supports traffic filtering and 
sampling. RITE is supported by Cisco AXP. RITE duplicates and exports traffic on a monitored 
interface. The Integrated-Service-Engine interface used by the Cisco AXP service module behaves like 
an Ethernet interface and is supported by RITE. Using RITE, the analysis module does not need to be 
attached to the Cisco router (unlike with the Cisco AXP Promiscuous Packet API).

RITE provides:

Traffic monitoring of email inbound, outbound, or in both directions

Control of ACL filtering and sampling rate

Sampling of one in every n packets during traffic sampling

Easy profile capture before applying the profile on an interface

Finer-grained detail of traffic capture compared to the Cisco AXP Promiscuous Packet API

Using RITE, you can specify:

Export interface

Monitoring of an interface with a different encapsulation type including the 
Integrated-Service-Engine interface, which behaves like an Ethernet interface

VLAN interface

Access Control Lists

Sampling rate

Router generated traffic is not captured by RITE. Router generated packets are process switched. They 
are not cef switched. There is only one export interface per profile and one profile per monitored 
interface.