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
Resolved! Cisco 9300 Stack
Hi,I am setting up a stack of 4 Switch 9300s.I would like to know how I can do so that when the switch with the active role turns off and returns, it will be the active switch again.I did the test with the commandstack-mac persistent timer 0But when ...
Resolved! flapping between port
Cisco C1000-48P-4G-LHi I just unpacked this switch and am getting a lot of these error messages.Host 0026.xxxx.93a4 in vlan 1 is flapping between port Gi1/0/2 and port Gi1/0/1Gi1/0/1 is PCGi1/0/2 is connected to an unmanaged switch which at this poin...
Hello.Prayer and direction to pages, and pages, and pages of community posts across CISCO, Ubiquiti and the internet in general helped me sort out this problem of not being able to communicate to Ubiquiti's Nanobeam AC Antenna when Management VLAN is...
Hi guys, Not too sure if I have posted on the correct but I have 3 switch stacks, 1 on each floor which are connected via Layer 3 Ether Channels. I have created a VLAN 240 for our guest Wi-Fi which I have extended on all switch stacks via Access port...
Hello all,I've done everything I can think off and I just can't get this material. I cannot for the life of me ping pc to another pc using vlans.If anyone can help me understand it better, it will be very much appreciated. I attached the packet trace...
Resolved! Won't load startup config
I've got a strange problem where the router won't boot with the startup config. When I type 'sho start' I see my config displayed but when I type 'sho run' it shows the generic config with none of the changes I made. Also, every time I power cycle th...
Hi guys. I'm making a backup of multiple Switches in my LAN.I'm doing it manually, like show run, then saving all information that I get on the screen to a text file.I remember from past that show run does not show all configuration, and that there a...
Hi everyone,I've encountered weird technical behavior of STP in our network as follow: 1) We have an Backbone Cat9300 switch that should be the Root Bridge in the RSTP domain, its priority and system-ID are the Lowest values - he is acting as a Root ...
I am working on testing Restconf on a catalyst 9200 switch. So I wanna get the interface configuration via REST API. I send following request:curl -k https://sw02/restconf/data/Cisco-IOS-XE-native:native/interface/GigabitEthernet=1%2F0%2F2 -u "cis:co...
Resolved! Stack IOS Upgrade Procedure
HiWe have a 3 switch stack and am wondering if anyone can give me step by step instructions on how to upgrade the IOS on the Stack SwitchesAnd also instructions on how to replace one of the Stack members if any issues arise with one.???????? Version ...
All, How do I disable the CBC ciphers on a Nexus 7000? Software BIOS: version 2.12.0 kickstart: version 6.2(16) system: version 6.2(16) BIOS compile time: 05/29/2013 kickstart image file is: bootflash:///n7000-s2-kickstart.6.2.16...
Helo masters, So i have a very simple task yet so risky becuase it is in server farm's production environment.We have existing session monitor 3 itu vlan 100 as source vlan. I want to simply add 230 vlan as source. What command to add 230 vlan to an ...
Resolved! Cisco 3850 stacking H/w Version mismatch
I have a failed cisco 3850. I got a new switch in and the IOS was lower than my current stack so i upgraded it . When i do a show ver the IOS looks right but when i do a show switch the H/W version are different. This will cause my stack to fail ? ...
Hello! Reboots the switch WS-C3750X-24S (ios 15.2(1)E2) in the stack and I do not understand why. In the log I see a lot the following: 189258: 182281: 010883: Mar 9 09:13:17: %SYS-2-MALLOCFAIL: Memory allocation of 40432 bytes failed from 0x2B7B3...
