ICMP Message Types Flashcards
1
Q
Echo Reply
A
0
2
Q
Destination Unreachable
A
3
Codes:
0—Destination network unreachable
1—Destination host unreachable
6—Network unknown
7—Host unknown
9—Network administratively prohibited 10—Host administratively prohibited
13—Communication administratively prohibited
3
Q
Source Quench
A
4
4
Q
Redirect
A
5
Sent when there are two or more gateways available for the sender to use, and the best route available to the destination is not the configured default gateway.
Codes:
0—Redirect datagram for the network
1—Redirect datagram for the host
5
Q
ECHO Request
A
8
6
Q
Time Exceeded
A
11
