Switching

I am having a problem getting DHCP on my PC LANRouter (DHCP Server) (ISR4331)(192.168.70.1)-- Switch (3750G) (IP helper address 192.168.70.1 on Vlan 1) - PC (192.168.70.x)The port coming from router (DHCP server) is connected to G1/0/1 Catalyst 3750G...

Hi,  When i restart the switch i am getting the error to start the switch switch: bootLoading "flash:c2960-lanbase-mz.122-35.SE5/c2960-lanbase-mz.122-35.SE5.bin"...flash:c2960-lanbase-mz.122-35.SE5/c2960-lanbase-mz.122-35.SE5.bin: no such file or di...

Hello,I am currently experiencing a problem with enabling perpetual and fast POE on a Cisco 9300 (17.9.4a) lab switch. Despite having both features enabled, POE devices like the Aruba 555 AP, Avaya VOIP phone, and IOT sensor remain powered on during ...

Hi,I'm looking for 10GBase-T SFP transceivers compatible with C3850-NM-2-10G module for 10GE ethernet/copper/RJ45 connection. We are going to connect a Dell server and looking for a solution for it.Something similar to https://www.amazon.com/10GBASE-...

Hello,I have 2 Cisco Stack switchs connect to 2 Aruba Stack Switchs.On CIsco switch, i configured port-channel (also from Aruba switchs). Everything works very good.But yesterday, i powered off the 2 Aruba Switchs and just after i powered on.But afte...

Hello and sorry for my bad english. I'd like to know if my port-channel configuration is bad because i don't know if i have to put this command on port-channel only, on port or on both :switchport trunk native vlan 999switchport mode trunkswitchport ...

Hello,On my main Cisco Cisco is configure stormcontrol. I have this command : errdisable recovery cause storm-controlerrdisable recovery interval 400and on each ports, i have :storm-control broadcast level 1.00storm-control multicast level 10.00Do yo...

Hi,We have standalone Cat 6500 Core switch with couple of VLAN, GW, static routing configured and connected to single internet FW.Now, I would like to migrate this core to new cat 9500 device with minimum downtime. Please help me with steps:

Hello all, I am using four ConnectX6-DX NICs and one Cisco N5624Q switches (with two modules) to buildup a RoCEv2 cluster. So it's a dumbbell topology where each switch module is connected to two CX6DX nodes, and all links are 40 Gbps: (2 nodes w/ CX...

Hi All,I would like to understand the concept about the power requirement for Cisco 9400.The Cisco 9400 with the power supply C9400-PWR-3200AC, with the power cord CAB-I309-C19-INTL. Understand that there is cordset rating for each type of the power ...

Hello Cisco Community!I’m an old Novell/Windows NT IT guy, who is now a technology tinkerer. Trying to understand some of these new terms, also, unfortunately, I have forgotten a good amount - as you will see in my questions below ☹. I recently purch...

Hi,I want to add a new stack member to an existing stack of C9300 switches.I've searched the web and I could find information about if it is safe to unscrew the STACK-T1-1M cables while all the switches are powered on in order to break the ring and m...

%DOT1X-5-FAIL: Switch 1 R0/0: sessmgrd: Authentication failed for client (0076.861a.2790) with reason (AAA Server Down) on Interface Gi1/0/17 AuditSessionID 099FA8C00000001E973BE640 Username: CP-7821-SEP0076861A2790May 20 18:21:18.739: %DOT1X-5-RESUL...