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Data Sheet UMUX NEBRA/NEBRO
Data Sheet UMUX NEBRA/NEBRO

... Ethernet over SDH Using EoS (Ethernet over SDH), the Ethernet frames are encapsulated in SDH by using GFP (Generic Frame Protocol) and transported through the SDH network in a VC-12 or VC-3 group (virtual concatenation). The Ethernet over SDH transport on the network side is in accordance with the r ...
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... takes over services when the master switch fails, reducing service interruption time. Stacks support intelligent upgrade so that users do not need to change the software version of a switch when adding it to a stack. The iStack function allows users to connect multiple switches with stack cables to ...
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... This revolutionized networking. First, by allowing two-way, simultaneous transmissions over the same port (Full-duplex), which essentially doubled the bandwidth. Second, by reducing the collision domain to a single switch-port, which eliminated the need for carrier sensing. Third, by using the store ...
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... with different configurations, but always with two new equipment and reusing the previous switch/router.  We chose the more advantageous: separated L2 and L3 equipment in one node, same equipment in the other node. ...
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... • DICE-Dynamic service being rolled out by ESnet, GÉANT, Internet2, and USLHCnet – Remaining issues being worked out – Planned commencement of service: October, 2011 – Built on OSCARS (ESnet, Internet2, USLHCnet) and ...
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... The D-Link DAS-3248 is a 48-port IP-based DSL Access Multiplexer that provides ADSL access to CPE (consumer premise equipment) ADSL modems/routers at the subscribers side. This DSLAM connects to the network service provider's network through its Ethernet interface. Using the latest ADSL/ADSL2/ADSL2+ ...
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... • There are L2 Security issues? • I use VLANs all the time • Routing in and out of the same switch is OK by me! That’s what VLANs are for • The security guy asks me for a new segment, I create a VLAN and assign him an address space ...
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Virtual LAN

A virtual LAN (VLAN) is any broadcast domain that is partitioned and isolated in a computer network at the data link layer (OSI layer 2). LAN is an abbreviation of local area network.To subdivide a network into virtual LANs, one configures a network switch or router. Simpler network devices can only partition per physical port (if at all), in which case each VLAN is connected with a dedicated network cable (and VLAN connectivity is limited by the number of hardware ports available). More sophisticated devices can mark packets through tagging, so that a single interconnect (trunk) may be used to transport data for multiple VLANs. Since VLANs share bandwidth, a VLAN trunk might use link aggregation and/or quality of service prioritization to route data efficiently.VLANs allow network administrators to group hosts together even if the hosts are not on the same network switch. This can greatly simplify network design and deployment, because VLAN membership can be configured through software. Without VLANs, grouping hosts according to their resource needs necessitates the labour of relocating nodes or rewiring data links.
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