Cell Relay Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Re: Forwarding between ELANS in LANE 2.0 & LANE frame format
In article <8618dq$p7j$1@nnrp1.deja.com>, mredondo@my-deja.com wrote: > Hi All¡ > How many ways are there to forward cells between ELANS in LANE 2.0 > apart from using a router? With LANE, you need a router to go to other Layer 3 networks (e.g. to reach another IP subnet). Or a bridge to go to other segments of that same Layer 2 network (e.g. LANE and an Ethernet segment are both in the same IP subnet). > Are MPOA, Layer3 switching or MPLS solutions to this? MPOA is not LANE. It is LANE plus what it takes to get to other Layer 3 networks. And a normal Layer 3 switch _is_ a router. > Is still necessary to have a router if you run MPOA? It is if you want to get beyond your ATM island. Otherwise, no. The router functionality is built in with MPOA. > If you connect your ATM switches in full-meshed topology, is still > necessary a router, MPOA,MPLS or Layer3 Switch? The design of the mesh doesn't change the simple fact that to get outside the ATM island, you need a router. Or a bridge if you share an IP subnet with some non-ATM LAN. > How many bytes do you have add (AAL5,LANE,...) to the ethernet frame to > have a packet ready to be cut in cells of 53 bytes? Don't worry about it. SAR (segmentation and reassembly) worries about packing cells correctly. It happens in the ATM NIC, all by itself. -- Bert albert.e.manfredi@boeing.com Sent via Deja.com http://www.deja.com/ Before you buy.
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