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Virtual Link Trunking or VLT is a proprietary aggregation protocol developed by Force10 (now Dell Networking) and available in their datacenter-class or enterprise-class network switches. VLT is implemented in the latest firmware releases of legacy ( FTOS ) OS9 for their high-end switches like the S-, Z- and E-series 10/25,40 and 100 Gbit/s ...
There are two 'sizes': 24 x 1GbaseT or 48 x 1GBaseT ports and each of them available as POE+ or standard switch. All models in the N20xx series can be stacked with other models in the same series. Although they do use the same stacking-cables as the N3000 series it is NOT possible to stack N2000 with N3000 switches.
Each QSFP+ port can be used for a 40 Gbit/s switch to switch (stack) uplink or, with a break-out cable, 4 x 10 Gbit/s links. Dell offers direct attach cables with on one side the QSFP+ interface and 4 x SFP+ on the other end or a QSFP+ transceiver on one end and 4 fibre-optic pairs to be connected to SFP+ transceivers on the other side. Up to ...
Many switches are PHY independent, meaning that a switch could have a mixture of copper, SX, LX, LX10 or other GBIC/SFP modular transceivers. While maintaining the same PHY is the usual approach, it is possible to aggregate a 1000BASE-SX fiber for one link and a 1000BASE-LX (longer, diverse path) for the second link.
Stacking resiliency. Multiple switches can have ways to bypass a “down” switch in a stack, thus allowing the remaining units to function as a stack even with a failed or removed unit. Layer 3 redundancy. Some stackable architectures allow for continued Layer 3 routing if there is a “down” switch in a stack.
The current portfolio of PowerConnect switches are now being offered as part of the Dell Networking brand: information on this page is an overview of all current and past PowerConnect switches as per August 2013, but any updates on current portfolio will be detailed on the Dell Networking page. PowerConnect was a Dell series of network switches.
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Switches A and B are each configured to group four discrete links (as indicated in green) into a single logical link with four times the bandwidth. Standard LACP protocol ensures that if any of the links go down, traffic will be distributed among the remaining three. Switch A is replaced by two chassis, switches A 1 and A 2. They communicate ...