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We're (hopefully) going to be overhauling several of our cabs over the holiday. We've currently got one of our cabs connected via 100Mbps fibre and we're looking to upgrade this. I've come across fs.com which seem to have very reasonably priced SFP and SFP+ compatible modules. Has anyone ever used them? Are the modules any good? Any help is greatly appreciated

hi,i`m trying to connect one building to another over fiber. there is a router and a switch,both of them are cisco`s products,892&2960,and they have the sfp fiber module.but the cisco router does not have a fiber port so I had to use a sfp interface to transform the fiber to Ethernet.i tried to set the sfp interface to switch port access,but it gives an error:i`m trying to get the switch in building A to link to the router in building B.and the problem is i`m using the sfp transceiver module and it's also in an expansion slot on the router and switch and not actually attached to one of the ports on the switch and router.i have no idea about it ,pls give me some advises if u have a better idea.thanks!

as now most of the 3rd party transceivers are MSA compliant and can be used on switches, I have a question does Erisson have their special coding or also MSA complint is ok?

hi, I do the ICT support for a local primary school and with budget constraints, i am pleaing to the edugeeks out there that you might have some of these lying around in the cupboards. if you could private message me if you have that would be great. D-Link DEM-310GT or something similar that will work with old Dlink switches. Thanks Nathan

Hi, Edit: removed initial pointless request I now can see wouldn't help at all! Details if anyone can help, regarding SPF records and email blocking: We're in the process of moving away from SWGfL, our cease date is the end of the month. Before then, we decided to move our domain name hosting away from SWGfL which itself went just fine. This all of a sudden, however left us with emails to our school not working (we use an onsite exchange 2010 server using a smarthost point to SWGfL's smarthost server). A bounce back would be generated from within SWGfL saying that the email could not be routed correctly. I assume SWGfL had deleted the DNS info and therefore couldn't route correctly anymore. Therefore we decided to move away from SWGfL's smarthost system and set exchange to send directly to MX records using the destination email address domain. This worked generally, except for emails to SWGfL hosted email, but easymail appears to be unaffected strangely. We're now getting the following bounce error: Relaying denied. IP name lookup failed [81.168.28.62] The IP address is the outgoing IP through which our exchange server is sending the SMTP traffic, and the MX record for our domains points to this IP. Doing some research (so be aware I know very little about what I'm talking about now!), it appears we need an appropriate SPF record, so we change the one which has SWGfL info to be: v=spf1 a mx ip4:81.168.28.62 ~all But still it doesn't seem to work. We have waited 24 hours replication time, to no avail. I think I might need to get the domain host to setup a PTR record for the IP address, which I have asked them, but I thought I'd also ask the collective wisdom of edugeek for help too. Any pointers? Many many many thanks in advance. Meldrew PS. Just looking in the exchange outgoing queue, I'm seeing quite a few emails unable to be sent, so I think its not just SWGfL blocking us - its anyone that does checks on incoming SMTP traffic in the same way... Help!