45mb DS3 to ethernet conversion/Transparent bridging.
Just wanted some pointers, I need to implement a solution which requires a 45mb G.703 T3 full rate (DS3) circuit presented each end as Ethernet (layer 2). Plan is to terminate the serial DS3 circuit on two 3825's with the NM-1T3/E3 modules and transparently bridge the outside ethernet segments with queueing to sinulate a 45 mb ethernet layer 2 point to point to the outside routers.I have look at metrodata DS3/ethernet converters but they don't offer LLF and they queue/buffer indescriminately based on TCP based flows.
Does anyone have example config's for transparent bridging so that the two end routers will see the 45mb layer 2 ethernet link and not the two 45mb serial routers/circuit in between. Obviously CDP will be removed.
2) I have the queueing data for the 100mb/45mb reduction but has anyone played with LLF so that if the G.703 45mb central circuit is lost, the ios shuts down it's outside ethernet interfaces? I have been told to look at Embeeded Event Manager in IOS to perform such an operation, but looks extremely complicated using TCL scripts. Any other ideas?
Re: 45mb DS3 to ethernet conversion/Transparent bridging.
Well, one problem is that with bridging, if you want to configure something like QoS / LLQ, you will find that is complicated (offset-based access list) and possibly unsupported. At some point, configuring some kind of L2 transport over IP could help.
Also a bit strange the necessity of shutting down the ethernet when ds3 is down, but I guess everything is non-standard in this design.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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