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Data Size
Verify Data
Timeout
UDP Jitter VoIP Codec
ICMP Ethernet
Interface
TOS (Type of Service)
DNS Name Server IP
Address
4. Click the Apply button.
Performance Monitoring - Results
The Performance Monitoring - Operations page displays all of the operations that have been
saved for a selected probe. The probe ID and name are shown at the top of the web page. From
this page, the user may select any operation to view its round trip time (RTT) results, or the
accumulated statistics for all round trip times in an operation.
An operation consists of sending a specified number of packets to a destination host and optional
port, with a specified amount of time between each packet. All results for each operation are
stored in one data file.
SLB™ Branch Office Manager User Guide
The size in bytes to use for the payload portion of the packet - this size is in
addition to the IPv4 header and the TCP, UDP or ICMP header. Any additional
space in the packet that is not used by the protocol will be padded with random
data that can be used for data verification (see below).
This parameter is only supported for ICMP Echo, TCP Connect, UDP Echo, UDP
Jitter, and UDP Jitter VoIP probes. The maximum payload for any probe is 1460
bytes. The minimum payload size for probes is: UDP Jitter VoIP G.729a codec
probes - 32 bytes; all other UDP Jitter probes - 64 bytes; ICMP Echo probes - 18
bytes; TCP Connect probes - 1 bytes; UDP Echo probes - 4 bytes.
If no data size is specified (e.g., it is set to zero), a default payload size will be
used for the probes as follows:
ICMP Echo - 56 bytes
UDP Jitter VoIP G.729A - 32 bytes
UDP Jitter (all others) - 64 bytes
TCP Connect and UDP Echo - 256 bytes
If enabled, indicates that the SLB should verify if there is data corruption in the
reply packets. This parameter is only supported for ICMP Echo, UDP Echo, UDP
Jitter, and UDP Jitter VoIP probes.
How long the SLB will wait for a packet to arrive, in milliseconds. If the packet
arrives after the timeout it will be considered a Late Arrival error (see
Conditions). The valid range is 10 - 1000, and the default is 200 msec.
For UDP Jitter VoIP probes, the codec to simulate. The following codecs are
available:
G.729A - 32 byte packets sent 20 msec apart, 1000 packets per operation, 60
seconds between operations
G.711 A-law - 172 byte packets sent 20 msec apart, 1000 packets per
operation, 60 seconds between operations
G.711 mu-law - 172 byte packets sent 20 msec apart, 1000 packets per
operation, 60 seconds between operations
The default values for the VoIP probes can be overridden to use different packet
sizes, intervals, etc.
For ICMP Echo probes, which Ethernet interface can be used for the probe: both
interfaces, Ethernet Port 1, or Ethernet Port 2.
Sets the IPv4 Type of Service field in the IPv4 header. This is available for UDP
Jitter and UDP Jitter VoIP probes only. The range is 0 - 255, and the default value
is 0.
For DNS Lookup probes, the IP address of the DNS name server to use for
lookups.
6: Basic Parameters
Error
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