Internet Assigned Numbers Authority
Internet Control Message Protocol (ICMP) Parameters
Last Updated
2025-04-29
Available Formats
[IMG]
XML [IMG]
HTML [IMG]
Plain text
Registries included below
??ICMP Type Numbers
??Code Fields
??Type 0 ¡ª Echo Reply
??Type 1 ¡ª Unassigned
??Type 2 ¡ª Unassigned
??Type 3 ¡ª Destination Unreachable
??Type 4 ¡ª Source Quench (Deprecated)
??Type 5 ¡ª Redirect
??Type 6 ¡ª Alternate Host Address (Deprecated)
??Type 7 ¡ª Unassigned
??Type 8 ¡ª Echo
??Type 9 ¡ª Router Advertisement
??Type 10 ¡ª Router Selection
??Type 11 ¡ª Time Exceeded
??Type 12 ¡ª Parameter Problem
??Type 13 ¡ª Timestamp
??Type 14 ¡ª Timestamp Reply
??Type 15 ¡ª Information Request (Deprecated)
??Type 16 ¡ª Information Reply (Deprecated)
??Type 17 ¡ª Address Mask Request (Deprecated)
??Type 18 ¡ª Address Mask Reply (Deprecated)
??Type 19 ¡ª Reserved (for Security)
??Types 20-29 ¡ª Reserved (for Robustness Experiment)
??Type 30 ¡ª Traceroute (Deprecated)
??Type 31 ¡ª Datagram Conversion Error (Deprecated)
??Type 32 ¡ª Mobile Host Redirect (Deprecated)
??Type 33 ¡ª IPv6 Where-Are-You (Deprecated)
??Type 34 ¡ª IPv6 I-Am-Here (Deprecated)
??Type 35 ¡ª Mobile Registration Request (Deprecated)
??Type 36 ¡ª Mobile Registration Reply (Deprecated)
??Type 37 ¡ª Domain Name Request (Deprecated)
??Type 38 ¡ª Domain Name Reply (Deprecated)
??Type 39 ¡ª SKIP (Deprecated)
??Type 40 ¡ª Photuris
??Type 41 ¡ª ICMP messages utilized by experimental mobility protocols such as Seamoby
??Type 42 ¡ª Extended Echo Request
??Type 43 ¡ª Extended Echo Reply
??Types 44-252 ¡ª Unassigned
??Type 253 ¡ª RFC3692-style Experiment 1
??Type 254 ¡ª RFC3692-style Experiment 2
??ICMP Extension Object Classes and Class Sub-types
??Sub-types ¡ª Class 1 ¡ª MPLS Label Stack Class
??Sub-types ¡ª Class 2 ¡ª Interface Information Object
??Sub-types ¡ª Class 2 ¡ª Interface Information Object ¡ª Interface Roles
??Sub-types ¡ª Class 3 ¡ª Interface Identification Object
??Sub-types ¡ª Class 4 ¡ª Extended Information
ICMP Type Numbers
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC2780][RFC-ietf-netmod-acl-extensions-17]
Note
The Internet Control Message Protocol (ICMP) has many messages that
are identified by a "type" field.
Note
When this registry is modified, the YANG module "iana-icmpv4-types"
[IANA registry yang-parameters] must be updated as defined in
[RFC-ietf-netmod-acl-extensions-17].
Available Formats
[IMG]
CSV
Type Name Reference
0 Echo Reply [RFC792]
1 Unassigned
2 Unassigned
3 Destination Unreachable [RFC792]
4 Source Quench (Deprecated) [RFC792][RFC6633]
5 Redirect [RFC792]
6 Alternate Host Address (Deprecated) [RFC6918]
7 Unassigned
8 Echo [RFC792]
9 Router Advertisement [RFC1256]
10 Router Solicitation [RFC1256]
11 Time Exceeded [RFC792]
12 Parameter Problem [RFC792]
13 Timestamp [RFC792]
14 Timestamp Reply [RFC792]
15 Information Request (Deprecated) [RFC792][RFC6918]
16 Information Reply (Deprecated) [RFC792][RFC6918]
17 Address Mask Request (Deprecated) [RFC950][RFC6918]
18 Address Mask Reply (Deprecated) [RFC950][RFC6918]
19 Reserved (for Security) [Solo]
20-29 Reserved (for Robustness Experiment) [ZSu]
30 Traceroute (Deprecated) [RFC1393][RFC6918]
31 Datagram Conversion Error (Deprecated) [RFC1475][RFC6918]
32 Mobile Host Redirect (Deprecated) [David_Johnson][RFC6918]
33 IPv6 Where-Are-You (Deprecated) [Simpson][RFC6918]
34 IPv6 I-Am-Here (Deprecated) [Simpson][RFC6918]
35 Mobile Registration Request (Deprecated) [Simpson][RFC6918]
36 Mobile Registration Reply (Deprecated) [Simpson][RFC6918]
37 Domain Name Request (Deprecated) [RFC1788][RFC6918]
38 Domain Name Reply (Deprecated) [RFC1788][RFC6918]
39 SKIP (Deprecated) [Markson][RFC6918]
40 Photuris [RFC2521]
41 ICMP messages utilized by experimental mobility protocols such as Seamoby [RFC4065]
42 Extended Echo Request [RFC8335]
43 Extended Echo Reply [RFC8335]
44-252 Unassigned
253 RFC3692-style Experiment 1 [RFC4727]
254 RFC3692-style Experiment 2 [RFC4727]
255 Reserved [JBP]
Code Fields
Reference
[RFC2780]
Note
Many of these ICMP types have a "code" field. Here we list the types
again with their assigned code fields.
Type 0 ¡ª Echo Reply
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 1 ¡ª Unassigned
Codes Description Reference
No registrations at this time.
Type 2 ¡ª Unassigned
Codes Description Reference
No registrations at this time.
Type 3 ¡ª Destination Unreachable
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Net Unreachable [RFC792]
1 Host Unreachable [RFC792]
2 Protocol Unreachable [RFC792]
3 Port Unreachable [RFC792]
4 Fragmentation Needed and Don't Fragment was Set [RFC792]
5 Source Route Failed [RFC792]
6 Destination Network Unknown [RFC1122]
7 Destination Host Unknown [RFC1122]
8 Source Host Isolated [RFC1122]
9 Communication with Destination Network is Administratively Prohibited [RFC1122]
10 Communication with Destination Host is Administratively Prohibited [RFC1122]
11 Destination Network Unreachable for Type of Service [RFC1122]
12 Destination Host Unreachable for Type of Service [RFC1122]
13 Communication Administratively Prohibited [RFC1812]
14 Host Precedence Violation [RFC1812]
15 Precedence cutoff in effect [RFC1812]
Type 4 ¡ª Source Quench (Deprecated)
Reference
[RFC792][RFC6633]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 5 ¡ª Redirect
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Redirect Datagram for the Network (or subnet)
1 Redirect Datagram for the Host
2 Redirect Datagram for the Type of Service and Network
3 Redirect Datagram for the Type of Service and Host
Type 6 ¡ª Alternate Host Address (Deprecated)
Reference
[JBP][RFC6918]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Alternate Address for Host
Type 7 ¡ª Unassigned
Codes Description Reference
No registrations at this time.
Type 8 ¡ª Echo
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 9 ¡ª Router Advertisement
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC1256][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Normal router advertisement [RFC3344]
16 Does not route common traffic [RFC3344]
Type 10 ¡ª Router Selection
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC1256][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 11 ¡ª Time Exceeded
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Time to Live exceeded in Transit
1 Fragment Reassembly Time Exceeded
Type 12 ¡ª Parameter Problem
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Pointer indicates the error
1 Missing a Required Option [RFC1108]
2 Bad Length
Type 13 ¡ª Timestamp
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 14 ¡ª Timestamp Reply
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC792][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 15 ¡ª Information Request (Deprecated)
Reference
[RFC792][RFC6918]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 16 ¡ª Information Reply (Deprecated)
Reference
[RFC792][RFC6918]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 17 ¡ª Address Mask Request (Deprecated)
Reference
[RFC950][RFC6918]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 18 ¡ª Address Mask Reply (Deprecated)
Reference
[RFC950][RFC6918]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Code
Type 19 ¡ª Reserved (for Security)
Reference
[Solo]
Codes Description Reference
No registrations at this time.
Types 20-29 ¡ª Reserved (for Robustness Experiment)
Reference
[ZSu]
Codes Description Reference
No registrations at this time.
Type 30 ¡ª Traceroute (Deprecated)
Reference
[RFC1393][RFC6918]
Codes Description Reference
No registrations at this time.
Type 31 ¡ª Datagram Conversion Error (Deprecated)
Reference
[RFC1475][RFC6918]
Codes Description Reference
No registrations at this time.
Type 32 ¡ª Mobile Host Redirect (Deprecated)
Reference
[David_Johnson][RFC6918]
Codes Description Reference
No registrations at this time.
Type 33 ¡ª IPv6 Where-Are-You (Deprecated)
Reference
[Simpson][RFC6918]
Codes Description Reference
No registrations at this time.
Type 34 ¡ª IPv6 I-Am-Here (Deprecated)
Reference
[Simpson][RFC6918]
Codes Description Reference
No registrations at this time.
Type 35 ¡ª Mobile Registration Request (Deprecated)
Reference
[Simpson][RFC6918]
Codes Description Reference
No registrations at this time.
Type 36 ¡ª Mobile Registration Reply (Deprecated)
Reference
[Simpson][RFC6918]
Codes Description Reference
No registrations at this time.
Type 37 ¡ª Domain Name Request (Deprecated)
Reference
[RFC1788][RFC6918]
Codes Description Reference
No registrations at this time.
Type 38 ¡ª Domain Name Reply (Deprecated)
Reference
[RFC1788][RFC6918]
Codes Description Reference
No registrations at this time.
Type 39 ¡ª SKIP (Deprecated)
Reference
[Markson][RFC6918]
Codes Description Reference
No registrations at this time.
Type 40 ¡ª Photuris
Registration Procedure(s)
IESG Approval or Standards Action
Reference
[RFC2521][RFC2780]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Bad SPI
1 Authentication Failed
2 Decompression Failed
3 Decryption Failed
4 Need Authentication
5 Need Authorization
Type 41 ¡ª ICMP messages utilized by experimental mobility protocols such as Seamoby
Registration Procedure(s)
Specification Required or IESG Approval
Expert(s)
Unassigned
Reference
[RFC4065]
Codes Description Reference
No registrations at this time.
Type 42 ¡ª Extended Echo Request
Registration Procedure(s)
First Come First Served
Reference
[RFC8335]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Error [RFC8335]
1-255 Unassigned
Type 43 ¡ª Extended Echo Reply
Registration Procedure(s)
First Come First Served
Reference
[RFC8335]
Available Formats
[IMG]
CSV
Codes Description Reference
0 No Error [RFC8335]
1 Malformed Query [RFC8335]
2 No Such Interface [RFC8335]
3 No Such Table Entry [RFC8335]
4 Multiple Interfaces Satisfy Query [RFC8335]
5-255 Unassigned
Types 44-252 ¡ª Unassigned
Codes Description Reference
No registrations at this time.
Type 253 ¡ª RFC3692-style Experiment 1 [1]
Registration Procedure(s)
Standards Action or IESG Approval
Reference
[RFC4727]
Codes Description Reference
No registrations at this time.
Type 254 ¡ª RFC3692-style Experiment 2 [1]
Registration Procedure(s)
Standards Action or IESG Approval
Reference
[RFC4727]
Codes Description Reference
No registrations at this time.
ICMP Extension Object Classes and Class Sub-types
Reference
[RFC4884]
Available Formats
[IMG]
CSV
Range Registration Procedures
0-246 First Come First Served
247-255 Private Use
Class Value Class Name Reference
1 MPLS Label Stack Class [RFC4950]
2 Interface Information Object [RFC5837]
3 Interface Identification Object [RFC8335]
4 Extended Information [RFC8883]
5 Node Identification Object [draft-fenner-intarea-extended-icmp-hostid-01]
6-246 Unassigned
247-255 Reserved for Private Use [RFC4884]
Sub-types ¡ª Class 1 ¡ª MPLS Label Stack Class
Registration Procedure(s)
First Come First Served
Reference
[RFC4950]
Available Formats
[IMG]
CSV
C-Type (Value) Description Reference
0 Reserved [RFC4950]
1 Incoming MPLS Label Stack [RFC4950]
2-246 Unassigned
247-255 Reserved for private use [RFC4950]
Sub-types ¡ª Class 2 ¡ª Interface Information Object
Reference
[RFC5837]
Available Formats
[IMG]
CSV
C-Type (Value) Description Reference
0-1 Interface Role field [RFC5837]
2 Unallocated - allocatable with Standards Action [RFC5837]
3 Unallocated - allocatable with Standards Action [RFC5837]
4 ifIndex included [RFC5837]
5 IP Address Sub-object included [RFC5837]
6 Name Sub-object included [RFC5837]
7 MTU included [RFC5837]
Sub-types ¡ª Class 2 ¡ª Interface Information Object ¡ª Interface Roles
Available Formats
[IMG]
CSV
Value Description Reference
0 Incoming IP Interface [RFC5837]
1 Sub-IP Component of Incoming IP Interface [RFC5837]
2 Outgoing IP Interface [RFC5837]
3 IP Next-hop [RFC5837]
Sub-types ¡ª Class 3 ¡ª Interface Identification Object
Registration Procedure(s)
First Come First Served
Reference
[RFC8335]
Available Formats
[IMG]
CSV
Codes Description Reference
0 Reserved [RFC8335]
1 Identifies Interface By Name [RFC8335]
2 Identifies Interface By Index [RFC8335]
3 Identifies Interface By Address [RFC8335]
4-255 Unassigned
Sub-types ¡ª Class 4 ¡ª Extended Information
Registration Procedure(s)
Standards Action
Reference
[RFC8883]
Available Formats
[IMG]
CSV
Value Description Reference
0 Reserved [RFC8883]
1 Pointer [RFC8883]
Contact Information
ID Name Contact URI Last Updated
[JBP] Jon Postel mailto:postel&isi.edu 1995-09
[David_Johnson] David Johnson
[Markson] Tom Markson mailto:markson&osmosys.incog.com 1995-09
[Simpson] Bill Simpson mailto:Bill.Simpson&um.cc.umich.edu 1995-10
[Solo]
[ZSu] Zaw-Sing Su mailto:ZSu&TSCA.ISTC.SRI.COM
Footnote
[1] It is only appropriate to use these values in explicitly-
configured experiments; they MUST NOT be shipped as defaults in
implementations. See RFC 3692 for details.
Licensing Terms
Presently we were in a very dark road, and at a point where it dropped suddenly between steep sides we halted in black shadow. A gleam of pale sand, a whisper of deep flowing waters, and a farther glimmer of more sands beyond them challenged our advance. We had come to a "grapevine ferry." The scow was on the other side, the water too shoal for the horses to swim, and the bottom, most likely, quicksand. Out of the blackness of the opposite shore came a soft, high-pitched, quavering, long-drawn, smothered moan of woe, the call of that snivelling little sinner the screech-owl. Ferry murmured to me to answer it and I sent the same faint horror-stricken tremolo back. Again it came to us, from not farther than one might toss his cap, and I followed Ferry down to the water's edge. The grapevine guy swayed at our side, we heard the scow slide from the sands, and in a few moments, moved by two videttes, it touched our shore. Soon we were across, the two videttes riding with us, and beyond a sharp rise, in an old opening made by the swoop of a hurricane, we entered the silent unlighted bivouac of Ferry's scouts. Ferry got down and sat on the earth talking with Quinn, while the sergeants quietly roused the sleepers to horse. Plotinus is driven by this perplexity to reconsider the whole theory of Matter.477 He takes Aristotle¡¯s doctrine as the groundwork of his investigation. According to this, all existence is divided into Matter and Form. What we know of things¡ªin other words, the sum of their differential characteristics¡ªis their Form. Take away this, and the unknowable residuum is their Matter. Again, Matter is the vague indeterminate something out of which particular Forms are developed. The two are related as Possibility to Actuality, as the more generic to the more specific substance through every grade of classification and composition. Thus there are two Matters, the one sensible and the other intelligible. The former constitutes the common substratum of bodies, the other the common element of ideas.478 The general distinction between Matter and Form was originally suggested to Aristotle by Plato¡¯s remarks on the same subject; but he differs325 from his master in two important particulars. Plato, in his Timaeus, seems to identify Matter with space.479 So far, it is a much more positive conception than the ?λη of the Metaphysics. On the other hand, he constantly opposes it to reality as something non-existent; and he at least implies that it is opposed to absolute good as a principle of absolute evil.480 Thus while the Aristotelian world is formed by the development of Power into Actuality, the Platonic world is composed by the union of Being and not-Being, of the Same and the Different, of the One and the Many, of the Limit and the Unlimited, of Good and Evil, in varying proportions with each other. The Lawton woman had heard of an officer's family at Grant, which was in need of a cook, and had gone there. [See larger version] On the 8th of July an extraordinary Privy Council was summoned. All the members, of whatever party, were desired to attend, and many were the speculations as to the object of their meeting. The general notion was that it involved the continuing or the ending of the war. It turned out to be for the announcement of the king's intended marriage. The lady selected was Charlotte, the second sister of the Duke of Mecklenburg-Strelitz. Apart from the narrowness of her education, the young princess had a considerable amount of amiability, good sense, and domestic taste. These she shared with her intended husband, and whilst they made the royal couple always retiring, at the same time they caused them to give, during their lives, a moral air to their court. On the 8th of September Charlotte arrived at St. James's, and that afternoon the marriage took place, the ceremony being performed by the Archbishop of Canterbury. On the 22nd the coronation took place with the greatest splendour. Mother and girls were inconsolable, for each had something that they were sure "Si would like," and would "do him good," but they knew Josiah Klegg, Sr., well enough to understand what was the condition when he had once made up his mind. CHAPTER V. THE YOUNG RECRUITS Si proceeded to deftly construct a litter out of the two guns, with some sticks that he cut with a knife, and bound with pawpaw strips. His voice had sunk very low, almost to sweetness. A soft flurry of pink went over her face, and her eyelids drooped. Then suddenly she braced herself, pulled herself taut, grew combative again, though her voice shook. HoME²Ô¾®Ïè̫ʲôÐÇ×ù
ENTER NUMBET 0016huhu1.com.cn
www.eryao.net.cn
www.ignqzs.com.cn
www.gcxpfn.com.cn
fulailx.com.cn
ggjdggjd.com.cn
www.oefciw.com.cn
www.mlhy.net.cn
two-l.net.cn
slsxsw.com.cn