Administrator Guide

Switch Management Commands 2262
• port — The destination UDP port of the probe. This should be an unused port on
the remote destination system (Range: 1–65535).
• size — The size, in bytes, of the payload of the Echo Requests sent (Range:
0–
39936 bytes). The default is 0.
• src-ip-address — The IPv4 source address to use in the ICMP echo request
packets.
• vlan — The source VLAN over which to send the echo request.
• loopback-id — A configured loopback ID
Default Configuration
The default count is 3 probes.
The default interval is 3 seconds.
The default size is 0 data bytes.
The default port is 33434.
The default initTtl is 1 hop.
The default maxTtl is 30 hops.
The default maxFail is 5 probes.
Command Mode
Privileged EXEC mode.
User Guidelines
Traceroute operates by sending a sequence of Internet Control Message
Protocol (ICMP) echo request packets. The time-to-live (TTL) value, is used
in determining the intermediate routers through which the packet flows
toward the destination address. Routers decrement a packet’s TTL value and
discard packets whose TTL equals 0. On discarding a packet, the router
returns an ICMP time exceeded message to the source.
Examples
The following example discovers the routes that packets will actually take
when traveling to the destination specified in the command.
(console) # traceroute ipv6 2001::2 init-ttl 1 max-ttl 4 max-fail 0 interval
1 count 3 port 33434 size 43
2CSNXXX_SWUM204.book Page 2262 Monday, January 25, 2016 1:25 PM