03-21-2002
Here's a good way to remember it:
All People Seem To Need Data Processing
Application, Presentation, Session, Transport, Network, Data-Link, Physical.
9 More Discussions You Might Find Interesting
1. IP Networking
Could anyone give a better picture of visualising the 7 layers in networking ? How the data is sent ...which part of it is taken care of by software and which is hardware related ?
I stumble here everytime I read a book on networking.. (1 Reply)
Discussion started by: seshagiri
1 Replies
2. IP Networking
after reading a paper about the OSI-model I'm not exactly sure how to look at this model.
Does data (a file) travel from the application level "down" each layer at the client
Application
V
Presentation
V
Session
V
Transport
V
Network
V
Data link
V
|
|
| (Physical)
| (3 Replies)
Discussion started by: J.P
3 Replies
3. Solaris
Dear
After i received a demo license for OSI 9.0 from SUN , i installed the packages . but when i tried to start the osinet deamon ( /etc/rc2.d/S90osinet ) i am getting the foellowing errror
# ./S90osinet start
starting osi daemon/usr/sbin/osinetd cannot find a valid license (STACK 9.0)... (4 Replies)
Discussion started by: itsgeorge
4 Replies
4. Solaris
Hi.
I get the folloing message if i try to start the osinet deamon:
# /etc/rc2.d/S90osinet start
starting osi daemonunable to unload all the osi modules
some OSI applications may be running
unable to start OSI daemon
#
Has anyone an idea what is going wrong?
Answers to mail: (Note... (1 Reply)
Discussion started by: morenqfj
1 Replies
5. Solaris
I'm using OSI version 9.0 with solaries OS , I 'm thinking of analysing the tracing while sending information through OSI layers , I want to analyze exactly the BER data ? Any one could provide an examples , I know the command for tracing these information but i need to understand the bytes travels... (1 Reply)
Discussion started by: atiato
1 Replies
6. Debian
Is there OSI telecom application which can be installed on debian similar to Solstice Solaries OSI ?
I need to get it on debian to build cmise and communicate with Network element . (0 Replies)
Discussion started by: atiato
0 Replies
7. IP Networking
Hi friends,
I hope everyone is doing fine. I have this confusion regarding the OSI model. I have been reading a book on datacommunication and networking which discusses the OSI model in great detail. One thing that I can't figure out is the OSI daigram in this book. It shows communication between... (1 Reply)
Discussion started by: gabam
1 Replies
8. Solaris
dear all,
i am working on test server with solaris 10 , after installing OSI deamon i stopped it for a test now when i am starting again i am getting this message that i ggoled and search evrywhere and haven't any response i will be glade for any help in here mate the error was :
./osinet... (1 Reply)
Discussion started by: semaan
1 Replies
9. Solaris
I have problem with oracle solaris 10 running on oracle sparc T4-2 server.
Os information: 5.10 Generic_150400-03 sun4v sparc sun4v
Output from tcpstat.d script
TCP bytes: out outRetrans in inDup inUnorder
6833763 7300 98884 0... (2 Replies)
Discussion started by: insatiable1610
2 Replies
LEARN ABOUT CENTOS
struct_sk_buff
STRUCT
SK_BUFF(9) Linux Networking STRUCT SK_BUFF(9)
NAME
struct_sk_buff - socket buffer
SYNOPSIS
struct sk_buff {
struct sk_buff * next;
struct sk_buff * prev;
ktime_t tstamp;
struct sock * sk;
struct net_device * dev;
char cb[48];
unsigned long _skb_refdst;
#ifdef CONFIG_XFRM
struct sec_path * sp;
#endif
unsigned int len;
unsigned int data_len;
__u16 mac_len;
__u16 hdr_len;
union {unnamed_union};
__be16 inner_protocol;
__u16 inner_transport_header;
__u16 inner_network_header;
__u16 inner_mac_header;
__u16 transport_header;
__u16 network_header;
__u16 mac_header;
sk_buff_data_t tail;
sk_buff_data_t end;
unsigned char * head;
unsigned char * data;
unsigned int truesize;
atomic_t users;
};
MEMBERS
next
Next buffer in list
prev
Previous buffer in list
tstamp
Time we arrived
sk
Socket we are owned by
dev
Device we arrived on/are leaving by
cb[48]
Control buffer. Free for use by every layer. Put private vars here
_skb_refdst
destination entry (with norefcount bit)
sp
the security path, used for xfrm
len
Length of actual data
data_len
Data length
mac_len
Length of link layer header
hdr_len
writable header length of cloned skb
{unnamed_union}
anonymous
inner_protocol
Protocol (encapsulation)
inner_transport_header
Inner transport layer header (encapsulation)
inner_network_header
Network layer header (encapsulation)
inner_mac_header
Link layer header (encapsulation)
transport_header
Transport layer header
network_header
Network layer header
mac_header
Link layer header
tail
Tail pointer
end
End pointer
head
Head of buffer
data
Data head pointer
truesize
Buffer size
users
User count - see {datagram,tcp}.c
COPYRIGHT
Kernel Hackers Manual 3.10 June 2014 STRUCT SK_BUFF(9)