Month: September 2013

VMware dvSwitches and Port Mirroring

When debugging a network problem, the first one wants to do is to…get the packets! In the past watching network traffic in real-time required either “promiscuous” mode network cards (NICs) or using hardware-based “port mirroring” on physical switches. Read below

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CentOS/RHEL and wrong Network Interface

This is a quick entry on a particularly irritating CentOS peculiarity – after you clone a virtual machine, your /etc/sysconfig/network-scripts/ifcfg-eth0 no longer gets invoked. This is because CentOS can arbitrarily assign the physical network card to a different logic interface

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