Cisco ASR1002 Network Positioning Guide - Page 12

Service Resolution Engine Ranking Requirements, Service Resolution Engine Configuration

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Service Resolution Engine Ranking Requirements Configuring Service Placement Service Resolution Engine Ranking Requirements If a service request asks for proximity ranking, the SRE supports the ranking of data centers according to the network proximity between the service-origination point and the data centers. Ranking Proximity In Cisco NPS, proximity ranking is based on the network distance between customer edge devices facing provider edge devices and data center devices facing provider edge devices. Ranking Performance If a service request asks for performance ranking, the SRE supports the ranking of data centers according to performance. In Cisco NPS, performance ranking is based on the performance attribute values measured between customer edge devices facing provider edge devices and data center devices facing provider edge devices. A user can assign different ranking priorities to different performance attributes. SRE supports these attributes: • Traffic delay • Traffic loss A user can select a combination of different performance attributes and assign different ranking priorities to them. Service Resolution Engine Configuration Perform this configuration on a provider edge router (PE) to enable the service resolution engine (SRE). Cisco recommends running the SRE on a DCE-facing PE in your network. SUMMARY STEPS 1. service-resolution web-service address ip-address [port port] 2. service-resolution web-service username username password password 3. service-resolution dc id pe-address address 4. service-resolution exclude dc id 5. service-resolution service-request timeout timeout-interval DETAILED STEPS Step 1 Command or Action Purpose service-resolution web-service address ip-address Configures the hostname or IP address and port for the service [port port] resolution API web service. The address can be configured explicitly. Example: switch(config)# service-resolution web-service address 10.0.0.1 port 10000 • ip-address-IP address that the external world uses to reach the service resolution API. Cisco Network Positioning System Configuration Guide for the Cisco ASR 1000 Router, Release 1.0 6 OL-25794-01

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Service Resolution Engine Ranking Requirements
If a service request asks for proximity ranking, the SRE supports the ranking of data centers according to the
network proximity between the service-origination point and the data centers.
Ranking Proximity
In Cisco NPS, proximity ranking is based on the network distance between customer edge devices facing
provider edge devices and data center devices facing provider edge devices.
Ranking Performance
If a service request asks for performance ranking, the SRE supports the ranking of data centers according to
performance.
In Cisco NPS, performance ranking is based on the performance attribute values measured between customer
edge devices facing provider edge devices and data center devices facing provider edge devices. A user can
assign different ranking priorities to different performance attributes. SRE supports these attributes:
• Traffic delay
• Traffic loss
A user can select a combination of different performance attributes and assign different ranking priorities to
them.
Service Resolution Engine Configuration
Perform this configuration on a provider edge router (PE) to enable the service resolution engine (SRE). Cisco
recommends running the SRE on a DCE-facing PE in your network.
SUMMARY STEPS
1.
service-resolution web-service address
ip-address
[
port
port
]
2.
service-resolution web-service username
username
password
password
3.
service-resolution dc
id
pe-address
address
4.
service-resolution exclude dc
id
5.
service-resolution service-request timeout
timeout-interval
DETAILED STEPS
Purpose
Command or Action
Configures the hostname or IP address and port for the service
resolution API web service. The address can be configured explicitly.
service-resolution web-service address
ip-address
[
port
port
]
Step 1
Example:
switch(config)# service-resolution
web-service address 10.0.0.1 port 10000
•
ip-address
—IP address that the external world uses to reach the
service resolution API.
Cisco Network Positioning System Configuration Guide for the Cisco ASR 1000 Router, Release 1.0
6
OL-25794-01
Configuring Service Placement
Service Resolution Engine Ranking Requirements