I went this morning to go troubleshoot a fiber connection between two switches in the same building. It was Singlemode fiber. I knew this fiber was fine because I had installed it myself and tested (with my OTDR) after installation. My customer was having an issue connecting two switches to each other using the fiber connection.
I have a 3com Baseline Switch 2928 that's connected over fiber to a 3com superstack 4500. The fiber is singlemode and has the suitable SFP modules on both switches.
The switches (and connected devices) have working networking but it's very unstable. Browsing SMB shares is workable but has lots of 'waiting intervals': sometimes opening a folder takes 20 seconds after which everything is back ok.
We currently have Brocade 200E fiber switches, connecting 2 EMC CLARiiONs to 4 VMware ESXi hosts. We are looking into new storage options using iSCSI with our existing ethernet network, including the possibility of gradually upgrading to 10 gigabit.
I have bought two WS-2948G switches from cisco for a lab. I now need two buy to additional modules for them WS-G5484. I've never worked with fiber so I was wondering if there are differences in fiber cables and what type of fiber cable I should use on these?
I noticed that there is LC, SC,ST,...
I've hit a bit of a wall with our network scale-out. As it stands right now:
We have five ProCurve 2910al switches connected as above, but with 10GbE connections (two CX4, two fiber). This fully populates the central switch above, there will be no more 10GbE Ethernet connections from that device.
I need to install new SFP's in a location, however I need them to connect to existing switches and I'm not sure what SFP type they are. All I know is I've got MM Fiber. If I installed Cisco GLC-SX-MM 1000Base SFP's, would that cause an issue if the other end of that fiber was connected to a 100Base SFP? Or do I need to have matching speeds on both ends?
Thanks in advance,
Ryan
I am trying to get an Gig-E network between two buildings that are approximately 260 ft. away. While some TRENDnet switches failed to be able to connect to each other over Cat 6 at that distance, two Netgear 5-port Gig-E switches do so just fine. However, it still fails after I put in place APC PNET1GB ethernet surge protectors at each end before the line connects to the respective switches.
Today, A tech at a remote server site unplugged a single port from one of our fiber converters for our WAN uplink from a Dell PowerConnect Switch. We lost all networking on the 3 stacked 48 port switches for a while, and looking at the log, it appears that removing that one port (which is on a seperate VLAN that only 3 of our ports use) Caused Spanning tree to go crazy..
I am attempting to set up a server with a total of four single-mode fiber ports - two need to be at least 1Gb and two must be 10Gb. I have found a variety of 10Gb single-mode fiber network adapters (for example the Intel X520-LR1 and the QLogic 3242-LR), but no 1Gb single-mode fiber adapters.