On Tue, 18 Sep 2018 at 15:26, Saku Ytti <saku@ytti.fi> wrote:
On Tue, 18 Sep 2018 at 16:39, Alan Hannan <alan@routingloop.com> wrote:
Long ago I used Cisco 2511/2611 and was fairly happy. A little later I used portmaster and was less so. Recently I've been using Opengear and they work fairly well but the price is fairly high. I use the CM7100 and IM7100.
Out of curiosity, how do you connect them? I see quotes around 200USD/MRC for ethernet in US, implying 12kUSD 5 year cost on just connectivity, add rack rental, and power and Opengear price is maybe 10% of TCO?
Personally I still prefer Cisco, as not to have new operating system to automate. Add conserver to connect persistently to each console port, so that you get persistent logs from console to your NMS, and so that you can multiplex your console sessions. It's hard to recover the CAPEX benefit if you need OOB platform specific OPEX costs.
For cheap OOB connectivity that scales, I've had some success with VDSL for OOB console server connections. Note that I didn't say "great"... In some DCs I've done mutual OOB swaps with other telcos in the same suite, this is usually cheap or free (excluding the one time xconnect cost, in suite xconnects often have no recurring charge) but you need to track them all, often every swap is bespoke, providers come and go so you need to replace them, if it's free you sometimes don't get maintenance alerts ;) Sometimes the DC provider has an OOB connectivity service that uses separate transit providers than we use and this often cheap too. Again this is often bespoke per DC/colo provider though. The most scalable solution I've been involved in so far is VDSL. Here in the UK lots of DCs are on-net for the national incumbent VDSL provider (BT). It means we can have the same style of connection to most DCs, same physical presentation, same cost, it eases the contract management for renewing them as we have one supplier etc. The biggest problem I've experienced with this approach is getting the copper line to the rack, some DCs charge a small fortune as copper pairs to a rack is a bespoke service for them, some do it regularly. I've just moved on from an LLU provider in the UK, a CLEC in US terminology, we had about 1200 PoPs around the UK most of which were telephone exchanges. If you want OOB in a DC it's different to a telephone exchange (well it is here), seeing as the OP hasn't mentioned if OOB will be in DCs/telephone exchanges/sailing boats/etc. I think it's worth pointing out tjat VDSL is often not available within an exchange here and maybe it's the same in the US. Cheers, James.