Network Headers

Type

Code

Type Name

Code Name

0x00

0x00

Echo Reply

N/A

0x03

0x00

Destination Unreachable

Network Unreachable

0x03

0x01

Destination Unreachable

Host Unreachable

0x03

0x02

Destination Unreachable

Protocol Unreachable

0x03

0x03

Destination Unreachable

Port Unreachable

0x08

0x00

Echo Request

N/A

0x11

0x00

Time Exceeded

TTL Exceeded

0x13

0x00

Timestamp

N/A

0x15

0x00

Information Request

N/A

0x17

0x00

Address Mask Request

N/A

Type

Code

Value

Meaning

Value

Meaning

1

Destination Unreachable

0

No route to destination

1

Communication w/ destination administratively prohibited

3

Address unreachable

4

Port unreachable

2

Packet too big

0

3

Time exceeded

0

Hop limit exceeded in transit

1

Fragment reassembly time exceeded

128

Echo Request

0

129

Echo Reply

0

133

Router Solicitation (NDP)

0

134

Router Advertisement (NDP)

0

135

Neighbor Solicitation (NDP)

0

136

Neighbor Advertisement (NDP)

0

137

Redirect Message (NDP)

0