Uplinking Linksys SRW2048 GB Switch to Extreme Alpine
I'm trying to uplink a Linksys SRW2048 GB switch to an Extreme Alpine 3804. The Extreme Alpine has a 4 port GB module (GM-4Xi), with 4 - Finisar multi-mode 850 nm GBIC modules (P/N FTR-8519p-5A) inserted into the GM-4Xi. The Linksys is a SRW2048 GB switch with a MGBLH1 GBIC - (I'm using port 3 of the Extreme GM-4Xi module and the shared port 23 on the Linksys for the linkage) The media is multi-mode fiber. I have turned off auto-negotiate on both switch ports. I get a link status light on the Linksys, but nothing on the Extreme. I have fiddled around, moving working links to this port 3 on the Extreme, with success...so I'm eliminating the GBIC on the Extreme. I have also replaced the Linksys MGBLH1 module. Any clues on why this isn't communicating?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Keep your 4-port and just purchase a netgear or linksys 8-port switch. This will increase your port count to 12, but you burn two ports on uplinking. If you need more ports, just get a 16-port switch then. I believe this will be the most cost effective solution.
Disconnect all the Ethernet cables from all the ports.
Connect one of those eight "bad" ports to your laptop.
See if the port works when it is the ONLY active port.
If not, move the cable to the next of the eight "bad" ports, and test again. Repeat.
Move the cable to one of the 40 "good" ports, and test.
If it works, then you have a hardware problem with that "group" of 8 ports.
Your choice to use only the 40 "good" ports, or to replace the router, if you need those last 8 ports.
This isn't a basic switch, it's effectively a router that you must configure it accordingly: a long process in which you must log it and do all the necessary adjustments, starting with the IP assignations for the other routers and the ports settings. The entire process can be found in the manual, Chapters 3 and 4 If you need the manual http://www.cisco.com/en/US/docs/switches/lan/csbms/srw2048/administration/guide/SRW-US_v10_UG_A-Web.pdf
The 'combo' ports can be ethernet or GBIC, not both. While the ports do provide flexibility for interconnects, they do cause some confusion when this comes up. If you need more ports, some Cisco switches do support 'stacking', where they can be interconnected via their StackWise ports located on the back. These switches work together and act like a single switch. Configuration is generally easy, with one switch being marked as 'master', generally the switch that has the uplink to the rest of the network.
It sure sounds like the switch is not passing the DCHPDISCOVER packets through to the Apple Extreme.
Is the switch a NetGear Prosafe switch, or a GS608, or a different model?
If it's a managed switch (e.g. ProSafe) then you can connect to the switch's management UI and confirm that the default uplink port is set up for the port that connects to the Apple Extreme, and that it's set to forward DHCPDISCOVER packets to that port
If it's an unmanaged switch like the GS608, then it shouldn't matter which port you connect, but if your model has one port labeled "uplink" then you should be sure to use that port to connect to tha Apple Extreme.
One last thought -- have you replaced the cable that you're using between the switch and the Apple Extreme? You could test the network by first connecting your computer to the Extreme so it gets a valid lease, then unplug it and hook up the full network (computer -> switch -> Extreme) and see if you can still ping the router.
That's a bunch of thoughts, but may not be a solution yet. If these don't address the problem, post back with the model number of your Switch, and I'll go more in-depth.
The RP114 has auto-MDI/MDI-X sensing ports which means you can use a crossover cable or a straight cable in any of the LAN ports and it will automatically make a connection to whatever device you are using, so no uplinking is necessary.