Analyzing Ip Service Levels By Using The Icmp Echo Operation - Cisco Catalyst 4500 Series Configuration Manual

Chapter 66 Configuring Cisco IOS IP SLA Operations
Type Of Service parameters: 0x0
Verify data: No
Vrf Name:
Control Packets: enabled
Schedule:
Threshold (milliseconds): 5000
Distribution Statistics:
Enhanced History:

Analyzing IP Service Levels by Using the ICMP Echo Operation

The ICMP echo operation measures end-to-end response time between a Cisco device and any devices
using IP. Response time is computed by measuring the time taken between sending an ICMP echo
request message to the destination and receiving an ICMP echo reply. Many customers use IP SLAs
ICMP-based operations, in-house ping testing, or ping-based dedicated probes for response time
measurements between the source IP SLAs device and the destination IP device. The IP SLAs ICMP
echo operation conforms to the same specifications as ICMP ping testing, and the two methods result in
the same response times.
This operation does not require the IP SLAs responder to be enabled.
Note
To configure an ICMP echo operation on the source device, perform this task:
Command
Step 1
configure terminal
Step 2
Switch(config)# ip sla
operation-number
Step 3
Switch(config-ip-sla)#
icmp-echo
{destination-ip-address |
destination-hostname}
[source-ip {ip-address |
hostname} | source-interface
interface-id]
Step 4
Switch(config-ip-sla)#
frequency seconds
Step 5
Switch(config-ip-sla)# exit
OL-25340-01
Operation frequency (seconds): 30
Next Scheduled Start Time: Pending trigger
Group Scheduled : FALSE
Randomly Scheduled : FALSE
Life (seconds): 3600
Entry Ageout (seconds): never
Recurring (Starting Everyday): FALSE
Status of entry (SNMP RowStatus): notInService
Number of statistic hours kept: 2
Number of statistic distribution buckets kept: 1
Statistic distribution interval (milliseconds): 20
Purpose
Enters global configuration mode.
Creates an IP SLAs operation and enter IP SLAs configuration mode.
Configures the IP SLAs operation as an ICMP Echo operation and enter ICMP
echo configuration mode.
destination-ip-address | destination-hostname—Specify the destination IP
•
address or hostname.
(Optional) source-ip {ip-address | hostname}—Specify the source IP
•
address or hostname. When a source IP address or hostname is not
specified, IP SLAs chooses the IP address nearest to the destination
(Optional) source-interface interface-id—Specify the source interface for
•
the operation.
(Optional) Sets the rate at which a specified IP SLAs operation repeats. The
range is from 1 to 604800 seconds; the default is 60 seconds.
Exits UDP jitter configuration mode, and return to global configuration mode.
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
Configuring IP SLAs Operations
66-11