IPv4 - Revision history

Anko: /* Total Length */

2013-06-22T14:04:54Z

Total Length

2013-06-13T14:25:34Z

Identification

2013-06-13T14:23:47Z

Identification

2013-06-13T14:20:27Z

Time To Live

2013-06-13T13:56:49Z

2013-06-13T13:56:13Z

Protocol

2013-06-13T13:54:48Z

Header Checksum

2013-06-13T13:33:41Z

Identification

2013-06-13T13:32:22Z

Identification

2013-06-13T13:23:54Z

Identification

@@ Line 46: / Line 46: @@
 ==Total Length==
 Total Length is the length of the datagram, measured in octets,
      including internet header and data.  This field allows the length of
      a datagram to be up to 65,535 octets.
@@ Line 52: / Line 57: @@
 All hosts must be prepared
      to accept datagrams of up to 576 octets
 ==Identification==

← Older revision		Revision as of 14:25, 13 June 2013
Line 57:		Line 57:

	An identifying value assigned by the sender to aid in assembling the fragments of a datagram.		An identifying value assigned by the sender to aid in assembling the fragments of a datagram.
		+
		+	This field is used for uniquely identifying the IP datagrams. This value is incremented every-time an IP datagram is sent from source to the destination. This field comes in handy while reassembly of fragmented IP data grams.
		+
	==Flags==		==Flags==

@@ Line 57: / Line 57: @@
 An identifying value assigned by the sender to aid in assembling the fragments of a datagram.
-*Flags:  3 bits
+==Flags==
-**Bit 0: reserved, must be zero
-**Bit 1: (DF) 0 = May Fragment,  1 = Don't Fragment.
+Flags:  3 bits
-**Bit 2: (MF) 0 = Last Fragment, 1 = More Fragments.
+*Bit 0: reserved, must be zero
    1   2
          +---+---+---+

@@ Line 93: / Line 93: @@
 [[Category:Компютърни мрежи]]
 ==Protocol==
 bits

← Older revision		Revision as of 13:56, 13 June 2013
Line 127:		Line 127:
	Security Option is required if classified, restricted, or		Security Option is required if classified, restricted, or
	compartmented traffic is to be passed.		compartmented traffic is to be passed.
		+
		+
		+	==Links==
		+	[[frame]]

@@ Line 108: / Line 108: @@
 ==Protocol==
 bits
 This field indicates the next level protocol used in the data

← Older revision		Revision as of 13:54, 13 June 2013
Line 114:		Line 114:

	==Header Checksum==		==Header Checksum==
		+
		+
		+	==Options==
		+	The options might not end on a 32-bit boundary. The internet header
		+	must be filled out with octets of zeros. The first of these would
		+	be interpreted as the end-of-options option, and the remainder as
		+	internet header padding.
		+
		+	Every internet module must be able to act on every option. The
		+	Security Option is required if classified, restricted, or
		+	compartmented traffic is to be passed.

@@ Line 68: / Line 68: @@
 *Fragment Offset:  13 bits
 This field indicates where in the datagram this fragment belongs. The fragment offset is measured in units of 8 octets (64 bits). The first fragment has offset zero.
 ==Time To Live ==

← Older revision		Revision as of 13:32, 13 June 2013
Line 68:		Line 68:
	*Fragment Offset: 13 bits		*Fragment Offset: 13 bits
	This field indicates where in the datagram this fragment belongs. The fragment offset is measured in units of 8 octets (64 bits). The first fragment has offset zero.		This field indicates where in the datagram this fragment belongs. The fragment offset is measured in units of 8 octets (64 bits). The first fragment has offset zero.
		+
		+	==Time To Live ==
		+	8 bits
		+
		+	This field indicates the maximum time the datagram is allowed to
		+	remain in the internet system. If this field contains the value
		+	zero, then the datagram must be destroyed. This field is modified
		+	in internet header processing. The time is measured in units of
		+	seconds, but since every module that processes a datagram must
		+	decrease the TTL by at least one even if it process the datagram in
		+	less than a second, the TTL must be thought of only as an upper
		+	bound on the time a datagram may exist. The intention is to cause
		+	undeliverable datagrams to be discarded, and to bound the maximum
		+	datagram lifetime.
		+	==Protocol==
		+	8 bits
		+
		+	This field indicates the next level protocol used in the data
		+	portion of the internet datagram. The values for various protocols
		+	are specified in "Assigned Numbers"
		+
		+	==Header Checksum==