On my Cisco Catalyst 3850 there is a SFP Module which is connected to another device, the port on the Other device (vendor equipment) come up but my interface is still down.
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Hi Community, At our client switch (C2960X) the uplink-port is shown as "up". But on the aggregation switch (3750X) the port is "down". cdp neighbor shows no switch. I have already
Hi. On a big industrial plant we''ve replaced an old HP switch with a brand new couple of C2960x switches in stack configuration and ever since
For more details on the different types of cables/connectors, cable requirements, optical requirements (distance, type, patch cables, and so on.), how to connect the different cables, and which cables are
When disconnected from the CN side, the switch port light goes off (or red, bit of a language barrier here). I will have to perform the two last steps
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The only way to make the port work was to physically pull the optic and reseat it, or use a magic command to simulate that. After doing an iOS update we haven''t had that issue any longer.
Whether you are dealing with physical damage, configuration errors, or faulty hardware, the steps outlined in this article will help you identify and resolve
SOLVED. This is mental. There was a PLC connected to a fiber optic port on stack switch ONE that somehow managed to disrupt the functionality of the rx side of the optical controller on
Hi, we have a C3850 24XS with a SFP+ module connected to a DWDM on 1310nm standard port, 10G. If the carrier shutdown the link, we have a down on port connected to DWDM,
The switch interacts differently with a 1G SFP copper/optical module versus a 10G SFP+ module. Optimizing the firmware to handle dual-rate autosensing requires deep knowledge of Cisco''s port
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Hi All, I have found one of the port has no night and it showed the interface downdown (notconnect) on the 2960 cisco switch. I tried to reload the switch and change the cable still not
Upgrading to 10Gb switches is essential for SMBs to meet increasing data demands and maintain competitive network performance. By balancing cost, port types, management needs, and
04-14-2023 01:18 PM Hi. On a big industrial plant we''ve replaced an old HP switch with a brand new couple of C2960x switches in stack configuration and ever since then, every 6/8 hours or so, the two
and Sonicwall NSA5600 Firewall and switch are connected by fiber optic cable multimode fiber SFP "GLC-SX-MMD" on both side. Sonicwall port comming up but cisco switch port
LonRise modules are programmed and tested on Cisco Nexus series switches to ensure 100% compatibility, including support for Digital Diagnostic Monitoring (DDM) and seamless port
Additionally, identifying module information helps detect coding compatibility between the module and the switch. The following introduces the specific operations to view the working status
Confused by SFP vs SFP+? Read the definitive 2026 guide on SFP modules. We explain Single Mode vs Multimode, DDM diagnostics, and how to choose the
There is a single mode optical fiber cable in our datacenter going from a Cisco N5K to another N5K across different racks. The link appears to be dead and I''m hoping to fix it, but I have
I have an ICX 7150 switch that has several Cisco switches connected, previously the links between these switches were through fiber, but after a power failure the links continue to link but on
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