There is no command available in any Unix like operating systems to measure the actual bandwidth of network by sending the real packets over the network. OS developers intentionally left out this option since such type of commands will hammer the system network. But we need such kind of tool in project phase of the system where you need to perform some […]
Solaris Networking
Solaris 11- How to Configure IPMP – Probe-Based ?
When your system required to handle huge amount of traffic, then you may need to combine one or more physical interfaces in to logical interfaces in various methods.1.Link Aggregation 2.Configuring IPMP. IPMP methods works in two methods to detect the failures. If the system is configured with default router, then it checks the connectivity with it.Otherwise it works in […]
How to Create a Virtual switch on Solaris11 ? How to Use it ?
Oracle Solaris 11 introduces a one of the new network virtualization component is called Virtual switch.There are two type of virtual-switches are available in Solaris 11. First type is, when you create a first VNIC on the system,it will automatically creates a virtual switch in the background for external network communications.The second type of virtual switch can be created by using “etherstub” command for […]
Solaris 11 – How to Create VNIC and Assign a IP ?
How to assign Static IP address in Solaris 11? Is it possible to assign multiple IP address to NIC ? First we will the basic difference between older version of Solaris and Solaris 11.In Solaris 10, according to the NIC manufacturer,physical network interfaces are named (Ex:bge,e1000g,nxge).But in Solaris 11 onwards,the inconsistencies names are hidden from the view and all the interfaces will be […]
SOLARIS 11 – Link aggregation vs IPMP ? How to Configure it?
How many of the Solaris administrator knows the difference between link aggregation and IPMP (IP Multi-pathing) ? Even i don’t know the difference till last month.But I was in situation to choose between IPMP and Link aggregation for one of the server.Then I have read the Solaris 11 manuals and finally find out the difference between both. Both IPMP and Link aggregation increase […]
How to configure Solaris 10 IPMP ?
This article describes how to configure link based IPMP interfaces in Solaris 10. IPMP eliminates single network card failure and it ensures system will be always accessible via network.You can also configure the failure detection seconds in “/etc/default/mpathd” file and the default value is 10 seconds.In this file there is an option called “FAILBACK” to […]
wireshark – How to analyse captured network data ?
Network troubleshooting is most difficult part in Unix Administration.To get resolve these network issues ,you need good support from network team .You never know where the problem resides on network issues since many hardwares involved like NIC,switch,cables, routers and firewalls. Most of the network issues are intermediate and you never know when it will happen again.So you need to […]
How to use snoop in Solaris ?
Snoop is a inbuilt packet analyzer tool in oracle Solaris operating system.It is used for network troubleshooting and analysis.But normal user do not have permission to run snoop command.Only root user can run it.Snoop command having option to redirect the output to file.This file can be analysed later using snoop command itself or you can use wireshark tool for that.If […]
ifconfig:Error:Cannot assign requested address-solaris
If it’s come to Solaris networking then you need to try many things to get it right.Like that here is one of the strange issue which i have faced recently .The request from the client to add IP address on the Solaris box without rebooting it.Yep Its so simple.But i had break my head like anything to bring up the IP address […]
How to plumb new IP in the zone on fly
As we all know that plumbing a new interface and assigning a IP address in Solaris 10 global zone. Have you ever added the new IP address in local zone without rebooting it ? Will it work by adding the IP information in zone’s configuration using zonecfg ? No. If you add a any new configuration in zonecfg, it requires […]