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New Member

Need choose switch in harsh enviroment condition

The task is :

Need swicthes that could be work in harsh enviroment (from -20C-50C temperature) DC power supply (for SCADA network in pipeline)

Ethernet and Fast ethernet support

at leats 2 uplink ports fiber single mode and multimode

I found only 2955 catalyst but we need DC power

Is there something from 4500 ?

When DC power will be available?

Thanks advance

Cisco Employee

Re: Need choose switch in harsh enviroment condition

2955 is a DC powered switch. It is powered with 24V DC. Cisco provides an optional DIN rail-mountable power converter allowing for 110/220V AC to be used (PWR-2955-AC).

New Member

Re: Need choose switch in harsh enviroment condition

Thanks for answer.

But i ' d like to ask

100Base LX can reach up to 15 km with optical budget for recievin from -38-31 mdb (for 2955Catalyst)

Is it possible to cover distance up to 30 km if maximum lost will be 12mdb on fiber at this distance?

How Cisco carried out test for distance ?

Can Cisco supply 2955 with DC from 37 - 70 V if order will be large ?

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