Sponsored Content
Operating Systems AIX AIX server problem - network connection is unstable ! Post 303044691 by Neo on Sunday 1st of March 2020 11:13:27 PM
Old 03-02-2020
Reference:

Network delay - Wikipedia

Quote:
Network delay is an important design and performance characteristic of a computer network or telecommunications network. The delay of a network specifies how long it takes for a bit of data to travel across the network from one communication endpoint to another. It is typically measured in multiples or fractions of seconds. Delay may differ slightly, depending on the location of the specific pair of communicating endpoints. Engineers usually report both the maximum and average delay, and they divide the delay into several parts:

Processing delay - time it takes router to process the packet header
Queuing delay - time the packet spends in routing queues
Transmission delay - time it takes to push the packet's bits onto the link
Propagation delay - time for a signal to reach its destination
There is a certain minimum level of delay that will be experienced due to the time it takes to transmit a packet serially through a link. Onto this is added a more variable level of delay due to network congestion. IP network delays can range from just a few milliseconds to several hundred milliseconds.
Your occasional delay of 44ms is small and normal for Ethernets. In addition, each h/w device (LAN card for example) can have a different characteristic. The more devices on the LAN segment, the more of a chance for crosstalk, etc.

If you need better performance, all network engineers, not only me, will advise you to put the two devices on their own (dedicated) LAN segment. This is the only way to insure the LAN segment delay is minimal.

If you don't want to believe a network systems engineer with over 30 years IP and Internet-based networking experience (33+ to be more exact), maybe you will believe the myriad references on the Internet:

Networking 101: Primer on Latency and Bandwidth - High Performance
Browser Networking (O'Reilly)


(just one of hundreds / thousands of examples on the net which discuss this topic.)

In addition, ping does not measure latency nor does it measure round-trip time. It measures ICMP echo request response time. ICMP messages run with low priority and take longer than other traffic. This means that if any single host on your network is "talking" at the same time (cross talk), your ping packet will be delayed.

As I mentioned, 44 ms is not much delay. It is 44/1000 of second.

If you need faster times between two devices on the same LAN segment, the #1 solution is to move the devices to their own LAN segment.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

FTP connection problem on new server

Solaris Server (V880) version 8 Brand new box just installed O/S, what do I need to do in order to get FTP working. I have updated the /etc/hosts.equiv file Problem - When trying to ftp to the server I get a login incorrect message, this is with the root user. Are there some... (1 Reply)
Discussion started by: miredale
1 Replies

2. UNIX for Dummies Questions & Answers

Network connection problem in unix

I have a network connection problem in unix. I am trying to access to LAN in unix but unfortunately it doesn't work. For example, if I ping from Unix to windows it says 'the network is unreacable'. Also, I can't ping in windows to unix. I would be glad if someone could help me. Thanks. ... (5 Replies)
Discussion started by: fatihshen
5 Replies

3. Cybersecurity

Enable SSH for root over certain network connection of a server...is it possible?

Hi - I have a SUSE Enterprise Linux Server V9 that I have an issue with. Policy says that root connectivity via ssh needs to be disabled. So, to do that, I made the following change in the sshd_config section: # Authentication: #LoginGraceTime 2m #PermitRootLogin yes PermitRootLogin no... (3 Replies)
Discussion started by: cpolikowsky
3 Replies

4. Solaris

Server unexpectedly closed network connection error in passwordless in ssh through

Hi , when i try to passwordless connection login in ssh through putty, i am getting the "Server unexpectedly closed network connection" error.i have already finished the public and private key settings for the particular user. thanks MaroV (1 Reply)
Discussion started by: vr_mari
1 Replies

5. AIX

AIX OS problem? network problem?

Dear ALL. I installed AIX OS on customer sites. but Only one site is too slow when I connected telnet, ftp.. Ping is too fast. but telnet and FTP is not connected.. of course i check the configuration file on aix but it's normal. Do any Idea?? thanks in advance. - Jun - (3 Replies)
Discussion started by: Jeon Jun Seok
3 Replies

6. Solaris

Solaris 10 ftp connection problem (connection refused, connection timed out)

Hi everyone, I am hoping anyone of you could help me in this weird problem we have in 1 of our Solaris 10 servers. Lately, we have been having some ftp problems in this server. Though it can ping any server within the network, it seems that it can only ftp to a select few. For most servers, the... (4 Replies)
Discussion started by: labdakos
4 Replies

7. AIX

Help Me - AIX server connect to a VPN network

Hi, I have a task requested by my boss to create a script to enable a server to connect to a vpn network and then to connect to another server to upload some data... How can I connect to a vpn network from AIX server? via telnet? ssh? I have tried to google but mostly the answers are... (1 Reply)
Discussion started by: mushr00m
1 Replies

8. UNIX for Advanced & Expert Users

fork: Resource temporarily unavailable , server unexpectedly unavailable network connection

Solaris 10 Server refuse to connect :wall: fork: Resource temporarily unavailable , server unexpectedly unavailable network connection , refuse error, disconnect message, fatal error type2, (protocol error type2) Issue has been resolved after taken few steps :b: First of all need to check... (1 Reply)
Discussion started by: taherahmed
1 Replies

9. Ubuntu

ssh connection unstable on remote server

Hi I hope someone can spot what is wrong with this ssh connection as it has me baffled. I am trying to set up a remote ssh connection (passwordless) to a remote 'server', (Ubuntu laptop at home). I have tried these steps with rsa and dsa key types, (currently dsa) - 1) ssh-keygen... (4 Replies)
Discussion started by: steadyonabix
4 Replies

10. AIX

FTP connection refused from text editor while accessing AIX server .

HI , I'm facing the FTP connection refused from text editor while accessing AIX server .It showing the messege "can't create ftp connection connectin refused".Though it is accessible from putty . i'm using aix version 6 . Can any one let me know the seetings needs to be made so that i... (2 Replies)
Discussion started by: rmkganesh
2 Replies
dsconfigldap(1) 					    BSD General Commands Manual 					   dsconfigldap(1)

NAME
dsconfigldap -- LDAP server configuration/binding add/remove tool. SYNOPSIS
dsconfigldap [-fvixsgmeSN] -a servername [-n configname] [-c computerid] [-u username] [-p password] [-l username] [-q password] dsconfigldap [-fviSN] -r servername [-u username] [-p password] [-l username] [-q password] options: -f force authenticated binding/unbinding -v verbose logging to stdout -i prompt for passwords as required -x choose SSL connection -s enforce secure authentication only -g enforce packet signing security policy -m enforce man-in-middle security policy -e enforce encryption security policy -S do not update search policies -N do not prompt about adding certificates -h display usage statement -a servername add config of servername -r servername remove config of servername -n configname name given to LDAP server config -c computerid name used if binding to directory -u username privileged network username -p password privileged network user password -l username local admin username -q password local admin password DESCRIPTION
dsconfigldap allows addition or removal of LDAP server configurations. Presented below is a discussion of possible parameters. Usage has three intents: add server config, remove server config, or display help. Options list and their descriptions: -f Bindings will be established or dropped in conjunction with the addition or removal of the LDAP server configuration. -v This enables the logging to stdout of the details of the operations. This can be redirected to a file. -i You will be prompted for a password to use in conjunction with a specified username. -s This ensures that no clear text passwords will be sent to the LDAP server during authentication. This will only be enabled if the server supports non-cleartext methods. -e This ensures that if the server is capable of supporting encryption methods (i.e., SSL or Kerberos) that encryption will be enforced at all times via policy. -m This ensures that man-in-the-middle capabilities will be enforced via Kerberos, if the server supports the capability. -g This ensures that packet signing capabilities will be enforced via Kerberos, if the server supports the capability. -x Connection to the LDAP server will only be made over SSL. -S Will skip updating the search policies. -N Will assume Yes for installing certificates -h Display usage statement. -a servername This is either the fully qualified domain name or correct IP address of the LDAP server to be added to the DirectoryService LDAPv3 configuration. -r servername This is either the fully qualified domain name or correct IP address of the LDAP server to be removed from the DirectoryService LDAPv3 configuration. -n configname This is the UI configuration label that is to be given the LDAP server configuration. -c computerid This is the name to be used for directory binding to the LDAP server. If none is given the first substring, before a period, of the hostname (the defined environment variable "HOST") is used. -u username Username of a privileged network user to be used in authenticated directory binding. -p password Password for the privileged network user. This is a less secure method of providing a password, as it may be viewed via process list. For stronger security leave the option off and you will be prompted for a password. -l username Username of a local administrator. -q password Password for the local administrator. This is a less secure method of providing a password, as it may be viewed via process list. For stronger security leave the option off and you will be prompted for a password. EXAMPLES
dsconfigldap -a ldap.company.com The LDAP server config for the LDAP server myldap.company.com will be added. If authenticated directory binding is required by the LDAP server, then this call will fail. Otherwise, the following parameters configname, computerid, and local admin name will respectively pick up these defaults: ip address of the LDAP servername, substring up to first period of fully qualified hostname, and username of the user in the shell this tool was invoked. dsconfigldap -r ldap.company.com The LDAP server config for the LDAP server myldap.company.com will be removed but not unbound since no network user credentials were sup- plied. The local admin name will be the username of the user in the shell this tool was invoked. SEE ALSO
opendirectoryd(8), odutil(1) Mac OS April 24 2010 Mac OS
All times are GMT -4. The time now is 03:14 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy