Interpreting netstat -s

Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Interpreting netstat -s
# 1  
Old 07-25-2001
Question Interpreting netstat -s

Are there any references I can look up for to interprete "netstat -s", especially those on TCP statistics.
# 2  
Old 07-25-2001

I don't understand your questions... What do you want to interpret? Do you want a more user-friendly listing from netstat? Do you want more information on a specific stat?
# 3  
Old 07-25-2001
netstat -s

Sorry for not posing my question clearly.

I wish to know the meaning of individual statistics output by "netstat -s".
# 4  
Old 07-25-2001

Well, it's very hard to explain them all if you don't understand TCP/IP. They show stuff that isn't too useful unless you're looking for something specific, or troubleshooting a network bug. Look for a primer on the TCP/IP protocol if you want to understand the output of `netstat -s`.
# 5  
Old 07-25-2001
I am trying to check on whether file descriptors has been exhausted. Which statistic should I refer to for this ?

If a process is trying to open up a socket, and the file description limit has exceeded, will there be any error log shown (eg in /var/adm/message) ?
# 6  
Old 07-25-2001
Example output of netstat -s:

athlon# netstat -s
461270 total packets received
0 forwarded
0 incoming packets discarded
288 incoming packets delivered
374553 requests sent out
8 dropped because of missing route
29 ICMP messages received
0 input ICMP message failed.
ICMP input histogram:
destination unreachable: 29
899 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 899
34 active connections openings
0 passive connection openings
0 failed connection attempts
0 connection resets received
1 connections established
460013 segments received
373502 segments send out
993 segments retransmited
0 bad segments received.
2 resets sent
123 packets received
32 packets to unknown port received.
0 packet receive errors
152 packets sent

There is nothing here that discusses file descriptors. This simply provides statistics about sockets, packets, tcp segments, and connections.

This command is not used to check for file descriptor usage.

# 7  
Old 07-25-2001
thnx Neo Smilie
I was just trying to check if there is any failed connections, perhaps due to fd exhausted.
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Help interpreting this freemem/freeswap graph

Hi, I am sure some gurus will recognize what this graph is. This is provided by our SA but I can't understand his explanation. I am not sure if this is from kSar or Cacti. The link that I was given to is to a kSar directory so I am assuming this output is from kSar. Hopefully, I can get a... (1 Reply)
Discussion started by: newbie_01
1 Replies

2. Shell Programming and Scripting

Interpreting multiple values from a variable

Hi, I am writing a shell script which will check the status of a resource in a cluster and then display nicely to a user running the script at command line. Basically the script runs a status command and then pulls certain keywords from the return and then should display a concise status. ... (5 Replies)
Discussion started by: chris01010
5 Replies

3. Shell Programming and Scripting

Interpreting arguments in Perl program.

Hello. I'm new to Perl and I am not sure how to interpret command line arguments in the program. I am writing a program similar to the Unix utility 'tail' and need to check if first argument is '-1' (1) or any arbitrary number of lines to output. How would I write an 'if' statement to check for... (4 Replies)
Discussion started by: D2K
4 Replies

4. Solaris

Interpreting xntpdc output.

Hi. I wonder what the equal sign in front of the answer means. I have read man pages and googled but found no answer. xntpdc -p = 3 512 377 0.02060 0.057426 0.04965Thanks. Jan (1 Reply)
Discussion started by: vettec3
1 Replies

5. Shell Programming and Scripting

Need help interpreting a function

Hi, i was reading through a sample coding and came across this function, can anyone pls help to interpret the code for me. Thank alot find_lines() { res=-1 if ; then grep -i "$@" $FILENAME res=$? fi return $res } (2 Replies)
Discussion started by: Cheranime
2 Replies

6. UNIX for Dummies Questions & Answers

interpreting netstat output

hi all, when I run- wcars1j5#netstat -an | grep 8090 *.* 0 0 49152 0 LISTEN wcars1j5# 1. does this mean that no one is connected to this port? Regards, akash (1 Reply)
Discussion started by: akash_mahakode
1 Replies

7. Solaris

solaris way if interpreting devices?

Hi all, I wanted to know the solaris way of interpreting devices? I mean i understand all those c0t0....stuff but when i start mounting devices , most of the times i get either a I/O error or it says that the directory does not exist. eg: I have a external usb hub to which i have connected... (1 Reply)
Discussion started by: wrapster
1 Replies

8. UNIX for Advanced & Expert Users

vmstats interpreting

We are having performance issues on an alpha4100 server. I can't paste a snapshot of my vmstat in here, but... We have 4gb of memory. The actual memory stays consistant around 306k. Free is dropping into the 120 area. Wire is around 206k consistantly. consistantly. My manual says that unix... (3 Replies)
Discussion started by: MizzGail
3 Replies

9. UNIX for Dummies Questions & Answers

Shellscript Interpreting

I am trying to interpret the following shellscript and am having a very difficult time. Could one of you Unix gurus pleasssseeee help me out? You just won't know how much of a life saver you would be for me. PN=`basename "$0"` # Program name VER=`echo '$Revision: 1.2 $' | cut -d' ' -f2` ... (3 Replies)
Discussion started by: Ann
3 Replies
Login or Register to Ask a Question