Jul
14
Due to the non-decreasing interest to the post about Private VLANs, I decided to make another one, more detailed – including a diagram and verification techniques. Read More
Feb
05
Within the scope of Metro Ethernet services, it is often beneficial to provide customers "point-to-point" VLAN service, where VLAN (multipoint service in essence) is effectively set up to emulate ethernet "pseudowire", by disabling MAC-address learning. The benefit comes from saving metro switches CAM tables address space, thus improving overall scalability (which is far from perfect with Ethernet). There is special command, mac address-table learning available on Cisco Metro swtiches (e.g. ME... Read More

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