Specifications

ShoreTel Voice Switches VxWorks® Command Line Interface
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ShoreTel 14 Maintenance Guide 86
TTL is a packet variable that defines the number of hops (stations) that a packet can pass through
before it expires. When a station receives an expired packet, it discards the packet and sends a time
exceeded message to the originating station. The traceroute command uses these expiration
messages to build the path map.
By determining the path to a known destination, network technicians can identify firewalls blocking
access to a site and gather information about the structure of a network and the IP address ranges
associated with a host.
The traceroute command can be executed from the switch’s command line or from the ipbxctl.exe
utility.
Running the Traceroute Command from the ShoreTel Voice Switch CLI
1. Open a Telnet session and enter:
traceroute “<IP address>”
IP address is the address of the target destination and is a mandatory parameter. It must be in
double-quotation marks.
2. Press Enter.
Traceroute displays information about the number of hops, host IP addresses, and the amount of
time required for each hop.
Tab l e 12 on page 86 lists and describes the parameters that can be used with the traceroute command
when executing the command from the ShoreTel Voice Switch command line.
Table 12: Traceroute Parameters
Parameter Description
“target IP
address”
This parameter specifies the target IP address of the traceroute. This
parameter is mandatory. IP addresses must be used and surrounded by
quotes. DNS names are not supported.
-C Probe on ShoreTel call control (ShoreSIP) port, using a ShoreSIP Request
message, to determine if the packets flow from the switch through the
network. This parameter uses fixed ports and version compatibility among
all ShoreTel switches receiving packets.
-e This parameter specifies the use of a fixed destination port and an
incrementing source port.
By default, traceroute increments the destination port with each probe. This
port number is then used as a sequence number for matching packet
responses to the probes. Incrementing the destination port number may
complicate troubleshooting when packets are being filtered or lost at certain
ports.
-I This parameter specifies the ICMP protocol. (UDP is the default protocol
used for traceroute.)