IP SLA

IP SLA = internet protocol service level agreements; these are used by routers to keep WANs running smoothly.

You can use IP SLA to generate traffic between routers and create bottlenecks. This can also be simulated using the GNS3 virtual networking appliance. See https://gns3vault.com/blog/gns3-ip-sla-traffic-generator/

The following configuration will generate ping (ICMP), DNS, HTTP, HTTPS, Telnet, SSH and RTP traffic on a router:

! ICMP Echo
ip sla monitor 1
type echo protocol ipIcmpEcho 192.168.23.3
timeout 0
frequency 9
ip sla monitor schedule 1 start-time now life forever

! DNS Request
ip sla monitor 2
type dns target-addr www.gns3vault.com name-server 192.168.23.3
timeout 0
frequency 9
ip sla monitor schedule 2 start-time now life forever

! G711 conversation
ip sla monitor 3
type jitter dest-ipaddr 192.168.23.3 dest-port 16384 codec g711ulaw codec-numpackets 50 codec-size 160 codec-interval 20
timeout 0
frequency 1
ip sla monitor schedule 3 start-time now life forever

! G729 conversation
ip sla monitor 4
type jitter dest-ipaddr 192.168.23.2 dest-port 16385 codec g729a codec-numpackets 50 codec-size 20 codec-interval 20
timeout 0
frequency 1
ip sla monitor schedule 4 start-time now life forever

! HTTP GET Traffic
ip sla monitor 5
type http operation get url http://192.168.23.3
frequency 60
ip sla monitor schedule 5 start-time now life forever

! TCPConnect to Telnet
ip sla monitor 6
type tcpConnect dest-ipaddr 192.168.23.3 dest-port 23 control disable
timeout 1000
frequency 2
ip sla monitor schedule 6 life forever start-time now

! TCPConnect to HTTPS
ip sla monitor 7
type tcpConnect dest-ipaddr 192.168.23.3 dest-port 443 control disable
timeout 1000
frequency 3
ip sla monitor schedule 7 life forever start-time now

! TCPConnect to FTP
ip sla monitor 8
type tcpConnect dest-ipaddr 192.168.23.3 dest-port 21 control disable
timeout 1000
frequency 1
ip sla monitor schedule 8 life forever start-time now

! TCPConnect to SSH
ip sla monitor 9
type tcpConnect dest-ipaddr 192.168.23.3 dest-port 22 control disable
timeout 1000
frequency 2
ip sla monitor schedule 9 life forever start-time now