Cisco IP Traceroute Characters

Cisco IP Traceroute Text Characters
Character Description
nn msec For each node, the round-trip time in milliseconds for the specified number of probes
* The probe timed out
A Administratively prohibited (example, access-list)
Q Source quench (destination too busy)
I User interrupted test
U Port unreachable
H Host unreachable
N Network unreachable
P Protocol Unreachable
T Timeout
? Unknown Packet Type
About Greg Ferro

Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count.

He is a host on the Packet Pushers Podcast, blogger at and on Twitter @etherealmind and Google Plus

You can contact Greg via the site contact page.

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