Hello everyone,i’v a Cisco ME 3400 series switch with default configuration. A special network device is connected on it and this device just sends broadcast ip packets. But this device has a MAC address starts with 11-xx-xx-xx-xx-xx and i have no ac...
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Forum Posts
Hi. We have a 2 switch core stack and a stack of 4 access switches connected together over 2 etherchannel links but one of the links has dropped and we don't know why. Interfaces on both sides are showing as down, down(notconnect) Core - C9500-16XAcc...
I'm configuring a trunk between a Juniper EX2300 and a C6509, the trunk forms when I use 'nonegotiate' on the Cisco side however our standard is 'Dynamic Desirable' for all access layer devices and when I set this on the Cisco port-channel I get the ...
I need your help as by default cisco switches have only 3 modes (pvst+ ,pvst ,MST) and i have more than 200 vlans per switch when i configured the below spanning-tree it shows no spanning-tree on some vlans although i need to be enabled for all of th...
How can we disable Port Security on SG switches? adTHANKSvance!
This is the new device. Please help. Is this normal or initial behavior? User Access Verification(none) login: admin********************************************************************************Fabric discovery in progress, show commands are not fu...
Resolved! STP ERROR URGENT
Hello i have a problems when i attep to connect poortchannelThe scenario is : SW ACCESS - CONNECT TO DISTRIBUTION SW is connect to core ( i dont have access for set up this sw)I am seeing this error Bound(RSTP) Pre-STD-Rx on the distribution SWMybe t...
Hi, recently I had an issue where a mac address was flapping between two sites that are connected via a Port-channel trunk, see logs below. I determined/assume it went into err-disable state because of a spanning tree loop as our intermediary provide...
I see the CRASHED logs in one of the switches and this model is already out of service.Is there any way we may mitigate the over time rather than replacing it with a new model?If there aren't any long-term choices, how can we fix the problem until th...
Help !!!! What exact product to do I need to purchase to upgrade from Essentials to Advantage to get 'stacking' working on my pair of C9500-24X-E switches??? I have purchased a pair of C9500-24X switches with 'Network Essentails' and 'DNA-Essentials'...
I have a Cisco switch (WS-C2960X-48LPS-L) that powers up then all the 48 ports are not working, the remaining SFP ports are working normally without any errors. Please find the below log and help me to resolve it. POST: Inline Power Controller Tests...
Hello all and thanks for your time and expertise. I need to reset a Cisco Catalyst 9400 series switch to factory default settings. Another gentlemen worked on the switch who is no longer around and I don't know the enable password. Is there away s...
Resolved! Catalyst 2960L Replacement
I'm looking for a replacement for Catalyst 2960L, I found a migration guide into the Cisco Catalyst 1000 but they don't seem to be supported by DNAC, anyone can confirm? If not what will be the recommended replacement model then for 2960L? Thank you.
Hi everyone ,what is the difference between cisco cbs and catalyst.I am using C9300L-24T-4X-A or CBS350-24T-4X for a customer. 2 switches are sufficient for my port needs and I do not have a very large network. What are the disadvantages of using CBS...
Resolved! Cisco 9300 24 and 48 port POE
Cisco 9300 switch have POE ports, but I am not sure that 24 port switch have poe port not? any idea ?Can we use any port at POE or 48 on cisco 9300 switch?
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