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To use a dynamic port, use the
ipsla responder
command, as shown in this example:
configure
ipsla responder
The dynamic port is opened through the IP SLA control protocol on the responder side when you start an
operation on the agent side.
The example is configured as a permanent port on the responder. UDP echo and UDP jitter can use a dynamic
port or a permanent port. If you use a permanent port for UDP jitter, there is no check performed for duplicated
or out-of-sequence packets. This is because there is no control packet to indicate the start or end of the probe
sequence. Therefore, the verification for sequence numbers are skipped when using permanent ports.
SUMMARY STEPS
1.
configure
2.
ipsla responder
3.
type udp ipv4 address ip-address port port
4.
commit
DETAILED STEPS
Purpose
Command or Action
configure
Step 1
Enables the IP SLA Responder for UDP echo
or jitter operations.
ipsla responder
Example:
RP/0/RSP0/CPU0:router(config)# ipsla responder
RP/0/RSP0/CPU0:router(config-ipsla-resp)#
Step 2
Enables the permanent address and port on the
IP SLA Responder.
type udp ipv4 address ip-address port port
Example:
RP/0/RSP0/CPU0:router(config-ipsla-resp)# type udp
ipv4 address 12.25.26.10 port 10001
Step 3
commit
Step 4
What to Do Next
After enabling the IP SLA Responder, see the
Configuring and Scheduling a UDP Jitter Operation on the
Source Device, on page 210
section.
Configuring and Scheduling a UDP Jitter Operation on the Source Device
The IP SLA operations function by generating synthetic (simulated) network traffic. A single IP SLA operation
(for example, IP SLA operation 10) repeats at a given frequency for the lifetime of the operation.
Cisco ASR 9000 Series Aggregation Services Router System Monitoring Configuration Guide, Release 4.2.x
210
Implementing IP Service Level Agreements
Configuring IP Service Levels Using the UDP Jitter Operation