Dell PowerEdge FX2/FX2s Manual de usuario descargar pdf (Pagina 461)

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Internet Control Message Protocol (ICMP)

Message Types

This chapter lists and describes the possible ICMP message type resulting from a ping. The first three

columns list the possible symbol or type/code. For example, you would receive a ! or 03 as an echo reply

from your ping.

Table 1. ICMP Messages and Their Definitions

Symbol Type Code Description Query Error

. Timeout (no reply)

! 0 3 echo reply .

U 3 destination unreachable:

0 network unreachable .

1 host unreachable .

2 protocol unreachable .

3 port unreachable .

4 fragmentation needed but don’t

fragment bit set

5 source route failed .

6 destination network unknown .

7 destination host unknown .

8 source host isolated (obsolete) .

9 destination network

administratively prohibited

10 destination host administratively

prohibited

11 network unreachable for TOS .

12 host unreachable for TOS .

13 communication administratively

prohibited by filtering

14 host precedence violation .

15 precedence cutoff in effect .

C 4 0 source quench .

5 redirect .

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