Fallback bedween a Laserlink and a HDSL modem line

hi ng,

please have a quick look at my drawing it describs it all, so all of us talk about the same thing.

As you can see we got two buildings witch are connected via Laserlink and via HDSL backup line. The Laser works at 100MBit pretty good, --> only with nice weather ;-) The HDSL line gets around 4 MBit through.

We want to build a system or config witch alowes us to automaticly switch bedween the lines. we tried spanning tree but got loops with fogy weather. so now we still do it manualy pluggin in and out one link at a time at one side of the buildings. (Laser or Modem up)

i asume a big problem we have to manage are thes marked medium converters from RJ-45 to fiberoptic glas lines. our cisco's see the converters interface always as up, even while the lasers lost connection because of the fog! so we have to create a system/config witch checks the troughput of the lines not the uplink status. somebody told me about how i could get my vlans or dot1q trunkport over ospf. my cisco skill levels are not that high as i would like them ;-) and i never worked with ospf so if you know what he might ment, it would be nice to get some hints. other suggestions then ospf? thank you

Greetings Colin

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Posted 5 years ago by C Cant in Cisco Systems

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