Cisco IOS IP SLAs

What Is IP SLAs

Why we use IP SLAs

IP SLA Advantages

Example

IP Service Level Agreements (SLAs)

What Is IP SLAs?

• Is a feature of the Cisco Internetwork Operating System (Cisco IOS).

• collect information about network performance in real time.

• helps the administrator to verify Quality of Service (QoS) levels.

• Ip sla with NMS.

• Previous name rtr(Response Time Reporter).

• Release 12.4

IP SLA Operations

• dhcp

• dns

• echo

• frameRelay

• ftp

• http

• jitter

• pathEcho

• pathJitter

• slm atm interface

• slm atm pvc

• slm controller

• slm frame-relay interface

• slm frame-relay pvc

• slm interface

• tcpConnect

• udpEcho

• voip4

To see sla operations on cisco device:#Show ip sla application

Note:Switch dose not support voip

Why we use IP SLAs

•Testing &monitoring: VOIP,DNS,DHCP,jitter,FTP,HTTP….etc

•Routing : Static route , PBR.

How its work?

• Responder not necessary for all operations

• Use NMS with GUI

Cisco IOS IP SLAs can send SNMP traps that are triggered by events such as the following:

• Connection loss

• Timeout

• Round-trip time threshold

• Average jitter threshold

• One-way packet loss

• One-way jitter

• One-way mean opinion score (MOS)

• One-way latency

8

implement IP SLAs network performance measurement

• Enable the IP SLAs responder, if required.

• Configure the required IP SLAs operation type.

• Configure any options available for the specified operation type.

• Configure threshold conditions, if required.

• Schedule the operation to run.

• Display and interpret the results of the operation using the Cisco IOS CLI or a network management system (NMS) system with SNMP.

Example :

10

configurations

Configure ip sla operation:

• ip sla monitor 1

• type echo protocol ipIcmpEcho 172.16.0.1

• timeout 1000

• threshold 2

• frequency 3

• ip sla monitor schedule 1 life forever start-time now

Configure track object:

track 1 rtr 1 reachability

Configure static route:

ip route 10.0.0.0 255.255.255.0 FastEthernet0/1 track 1

11

Note:Version 12.3(14)T6

verification

12

To verify ip sla operation:show ip sla ?statisticsapmapplicationauthentication collection-statistics configuration distribution-statistics enhanced-history group history operational-statereaction-configurationreaction-triggerresponder\totals-statistics

Thank You