Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...
Forum Posts
Hi All,We have a 3750x switch with some issues on the arp. Our servers become unreachable for some time, buy when I clear the arp cache, I am able to ping the server again. I have tried adjusting the arp timeout but I don't think doing so would be th...
On "Configuring Cisco StackWise Virtual" document. It says "Etherchannel 127 and 128 are reserved for SVL connections". but the later configuration did not mention configure etherchannel 127 and 128 rather just specify 2 interfaces as SVL link.My que...
Good morning, we have just received new 9300x switches and I need to copy the configs onto them using putty, however when I do this I get nothing but errors. could some one show me step by step how to apply the configs to the 9300x Switches. Thank y...
Is there any way to go back from C3PL to legacy style? Is write erase, reload with backup config only method? Wanted to test config for few ports but i completly ignored the message clearly shown on CLI and copy and pasted a whole bunch of class poli...
Resolved! PoE Overload on Cisco 1300
Hello,I've installed a new C1300-24P-4X with firmware 4.1.3.36. It should support PoE+ 802.3at with max 30watts.I have a TP-Link EAP650 with 802.3.at PoE that should draw 15.4watts on one port but the port flaps and shuts itself of with overload cond...
Hello all. I am new to the networking world, and trying to get a better understanding of everything. I currently have a Cisco Catalyst 4500-X. I am able to to get to the main Switch# prompt, but am realizing that the standard Catalyst commands do no...
Hi Want Copy Header of my Packet By SPAN to Destanation Used all mtu size 64-512 all sizes donnot worktype : localstate : upacl-name : acl-name not specifiedmtu : 512source intf :rx :tx : Po14both :source VLANs :rx :tx :both :filter VLANs : filter no...
Clarification of this bug:Regardless of the configured timers (reachable-lifetime xxx, stale-lifetime xxx, down-lifetime xxx), the states DH4 in the DT table have the following validity:VERIFY (approximately 13 minutes)STALE (approximately 45 minutes...
I am having issue with one of my desktops connected to my switch interface flipping between two MAC addresses (see the attached picture below for log). When I disconnect the desktop the IP and the MAC issues will not show in the log. I reimaged the ...
Does anyone have any practical experience with 9300 (non L, non X) switches and the short 30cm stackpower cable? The stackpower cable is only available in 30cm and 150cm. That's a big jump. Some of our switches are 4u's apart. The rack is organized l...
Resolved! How to Read Cable TDR Testing Result
Hi network gurus, I have a hard time to determine which part cable is broken at below. Do both short and open mean that we have cable issue from patch panel to the Ethernet port on the wall (the cable run inside the wall/ceiling), and the ...
I have a question about the following default values in Catalyst 9000 series version 17.12.5.・no thermal shutdown disableI have a concern that the temperature will rise and the power will be turned off when the FAN fails.・no ethernet reuse subInterfa...
I am having trouble configuring the C1300 and Dell 6224 switch.On the Dell side, I received the following configuration:The assumption is that traffic in VLAN150 is tagged, and I have no problem with that. The problem is with VLAN1, which is supposed...
Hello. I was searching for information but i cant find if switch IE-3400-8T2S-E should be connected with communication wire between expansion module IEM-3300-16T ?
We are planning to replace two Cisco Catalyst C9300 switches that are currently configured with HSRP.Could you please recommend the best approach to perform the replacement while minimizing service downtime?Any detailed guidance or best practices wou...
