Login or Register to Ask a Question and Join Our Community


Homework & Coursework Questions

netstat -r question

 
Thread Tools Search this Thread
Homework and Emergencies Homework & Coursework Questions netstat -r question
Prev   Next
# 4  
Old 05-14-2011
224.192.48.0/20 is in CIDR format. It's the equivalent to subnet 224.192.48.0 with a netmask of 255.255.240.0. A netmask is always a sequence of 1-bits's followed by a sequence of 0-bit's. The subnet mask 255.255.240.0 has 20 1-bit's. The notation 224.192.48.0/20 is so much more compact than "224.192.48.0 with a netmask of 255.255.240.0" that lots of us just use it all the time even on internal networks that don't involve CIDR.

To split a network 50-25-25 we need to crack it into 4 pieces. That way we can give 2 pieces to the one big guy and then the little guys get one piece each. Notice that 4 is a power of two. It's gotta be that way. If these 3 guys each wanted one third of the network we would be outta luck.

The guy with two pieces can fold them together (or aggregate) them. To do that he needed either the first two or the second two pieces. You can't just give him any random selection.

The 4 way split involved added two more 1-bits's to the subnet mask.

That 4-3-1 split you ask about happens to be possible. So it is probably an assignment. Smilie You will need to crack the network into 8 pieces to start. One guy will get 4 pieces, the next guy gets 3 pieces, and the last guy only gets one piece. The guy with 4 pieces can get all 4 folded back into a single CIDR spec. Not's not the case with the guy who gets 3 pieces. You can fold his first two back together, but then he a final separate piece. That's the way it has to be. The guy with one piece has nothing to fold.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. OS X (Apple)

netstat

When running netstat -i from the Command Terminal, It returns with 21 different connections.. The addresses all look like this: ::1 fe80:1::1 10:dd:b1:a5:c4:ba with Network names like Linke#2 fe80::8e2d How can I delve deeper into this to clarify what is going on with my network?... (0 Replies)
Discussion started by: dwfiedler
0 Replies

2. Red Hat

netstat

Hi Can any body tell me about TIME_WAIT status meaning in the following command output. # netstat -anp|grep 5000 tcp 0 0 127.0.0.1:50006 0.0.0.0:* LISTEN 5058/ccsd tcp 0 0 0.0.0.0:50008 0.0.0.0:* ... (3 Replies)
Discussion started by: mastansaheb
3 Replies

3. UNIX for Advanced & Expert Users

Help with netstat

Hi, I want to list the time for how long a secure connections last to my server/blade. i am using netstat command to get the same, but not sure how to get the time for how long connections is being ESTABLISHED. netstat -na | grep 'ESTABLISHED' | grep :443 |awk '{print $4}' | cut -d: -f1 |... (1 Reply)
Discussion started by: Siddheshk
1 Replies

4. Solaris

netstat -- what am i looking at?

Greetings to all, Here is a line of output from my netstat command cbp031.904 wdcprodhome.nfsd 98304 0 49640 0 ESTABLISHED The only thing i recognize is the unix machine "cbp031" but what is .904 and all the other data telling me? Thanks in advance. (3 Replies)
Discussion started by: Harleyrci
3 Replies

5. BSD

question about netstat

For FreeBSD I use this command to determine what ports are listenning netstat -an | grep LISTEN is there another way, perhaps another command? (2 Replies)
Discussion started by: edgarvm
2 Replies

6. UNIX for Dummies Questions & Answers

netstat not working

Hello, One of the solaris machine in our network is giving an error when the netstat command is executed. soloman:/home/db2admin->netstat ip open: Permission denied can't open mib stream: Bad file number But it works with root. I couldnt' get any useful info during my search in google. ... (2 Replies)
Discussion started by: k_pranava
2 Replies

7. IP Networking

netstat

Hi what is the command to see the process name/application name along with the port number, connection status ... netstat is not giving process/application name Is there any way to know which application is holding which port? Thanks in advance (3 Replies)
Discussion started by: axes
3 Replies

8. UNIX for Dummies Questions & Answers

Netstat question

I'm sure this a simple networking question. I was performing a traceroute to a client of ours that connects to us over the internet. They were having problems connecting to us and I when I did the traceroute command it would stop at about 5 hops and give me 3 stars continously (* * *) What does... (1 Reply)
Discussion started by: eloquent99
1 Replies

9. IP Networking

TIME_WAIT in netstat

Why would I get TIME_WAIT when i netstat a port?? What would be some scenarios of this situation?? (1 Reply)
Discussion started by: eloquent99
1 Replies

10. IP Networking

Netstat

Giving netstat command on the prompt gives commands such as localhost.43592 localhost.35237 32768 0 32768 0 TIME_WAIT localhost.43594 localhost.43595 32768 0 32768 0 TIME_WAIT localhost.43598 localhost.35237 32768 0 32768 0 TIME_WAIT... (6 Replies)
Discussion started by: DPAI
6 Replies
Login or Register to Ask a Question

LEARN ABOUT MINIX

debconf-mergetemplate

DEBCONF-MERGETEMPLATE(1)					      Debconf						  DEBCONF-MERGETEMPLATE(1)

NAME

       debconf-mergetemplate - merge together multiple debconf template files

SYNOPSIS

	debconf-mergetemplate [options] [templates.ll ...] templates

DESCRIPTION

       Note: This utility is deprecated. You should switch to using po-debconf's po2debconf program.

       This program is useful if you have multiple debconf templates files which you want to merge together into one big file. All the specified
       files will be read in, merged, and output to standard output.

       This can be especially useful if you are dealing with translated template files. In this case, you might have your main template file, plus
       several other files provided by the translators. These files will have translated fields in them, and maybe the translators left in the
       english versions of the fields they translated, for their reference.

       So, you want to merge together all the translated templates files with your main templates file. Any fields that are unique to the
       translated files need to be added in to the correct templates, but any fields they have in common should be superseded by the fields in the
       main file (which might be more up-to-date).

       This program handles that case properly, just list each of the translated templates files, and then your main templates file last.

OPTIONS

       --outdated
	   Merge in even outdated translations. The default is to drop them with a warning message.

       --drop-old-templates
	   If a translation has an entire template that is not in the master file (and thus is probably an old template), drop that entire
	   template.

SEE ALSO

       debconf-getlang(1)

AUTHOR

       Joey Hess <joeyh@debian.org>

								    2012-09-10						  DEBCONF-MERGETEMPLATE(1)