Cisco SG300-20 in a Rapid Ring

[a.rondini]

Good Morning,

i'm working about a big poject but now we have a problem with a network.

We need to work with 1Gb band in a WAN and we need to install CISCO SG300-20 in a ring of these Switches

http://www.ccontrols.com/ctrlink/eimk.htm.

These switches are in a Rapid Ring configuration because we need a redundancy network.

So we have to insert the CISCO within this fiber ring.

Can you advise me on the proper configuration of CISCO SG300 ?

Thank you for reply.

[Tom Watts]

Hi Andrea, are the switching being installed to an existing infrastructure? These switches do not need a media converter since they already have fiber ports which support multimode or single mode. The switch does not support something like an ERPS ring or ERPS domain. If running 2 links in a ring one of those links will be in a blocking state due to spanning-tree.  To overcome spanning tree, you can try to filter the BPDU or disable spanning tree all together. However, this will make the network susceptible (and most inveitable) a broadcast loop.

-Tom
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[a.rondini]

I've found a solution about this problem.

Aboard last switch of ring i've 8 free ports 10/100 Mb. I'd like to use them in a trunk mode but i need to know how can i set this Cisco SG300 . Can you help me?

Thank you so much for the answer.

[Tom Watts]

To configure a trunk the fastest way is through the cli

config t

interface range gi1-8

switchport mode trunk

-Tom
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[a.rondini]

Thank you for reply Tom.

But i don't know very well cli mode.

Can you explain how can i set my Cisco by web interface?

At the end i'll do an aggregation ports between last switch of the ring and Cisco one using trunk way.

Can you help me?