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
Last reload reason : Critical process sif_mgr fault on rp_0_0 (rc=143) I got this error message after a switch stack rebooted yersterday. Any idea what could cause this?Switch: Cisco 9200L 48P 4xFirmware: 17.12.04
Hello everyone,The network I work on has some very old switches, some of which have been online for about a year, so there's a lot of data to pull from. Physically these switches look awful, and I would like to unplug some cables that haven't been us...
Hello, I have a Cisco CBS350-48T-4X switch stack running software version Version: 3.2.1.1. A vulnerability scan was recently run on our network and identified the below vulnerabilities. Does anyone know how to remediate them?* SSL Self-Signed Cert...
Resolved! Native Vlan mistach issue.
Running into an issue with our network stack and Vlan Mismatch.We have in our environment a mix of ubiquiti and cisco switches. With the current configuration it seems that all the routing is mostly working but we are running into an issue where on t...
Good day to all. I encountered a problem that after turning on the Cisco 3560 switch, all the indicators on the Internet ports start blinking. The console displays this error. What should I do in this situation? Can I solve this problem myself? !...
Hi ,I have two switches (SWITCH 5 & SWITCH 6,both 9300) connecting to Switch 4 via a single fiber connection. For better resiliency, it is suggested that I create a port channel and bundle two fibre ports together.My question is the below order of op...
How to set time in CISCO IE 4010I dont see clock set commandSW01(config)#clock ?calendar-valid Calendar time is authoritativesummer-time Configure summer (daylight savings) timetimezone Configure time zone
May i know why after settings the boot system cmd, the Boot Variables on next reload not changing to c3750-ipbasek9-mz-122-55.SE1.bin? Isnt the Current Boot Variables is the "current ios" & Boot Variables on next reload:is "the next reload ios in boo...
Hello,I am wondering, why ISR4331 send ntp packes with src address 0.0.0.0, though loopback interface is used as src:ntp source Loopback0ntp access-group peer 20ntp server 10.0.0.1ntp server 10.0.0.2debugging:006301: .Mar 6 21:22:29.247: NTP: ntpio_s...
I see TCP retransmission and no ACK what could be the issue and how to fix it
Resolved! %HSRP-4-DIFFVIP1
Hi All,I am getting this error message continuously in our dist, however the configurations are fine. %HSRP-4-DIFFVIP1: Vlan12 Grp 1 active routers virtual IP address 10.230.148.193 is different to the locally configured address 10.230.134.129
Can someone with access to a 9200CX-8UXG-2X please give me a list of its interface names, or tell me where I can find this myself?I don't have access to one right now. I'm in the process of planning an extension of our network, and would very much li...
Hello, I'm trying to apply some policy maps on a 9300 stack on version 17.12.04 of IOS for shaping DOT1X traffic. As it is right now, every port (interface GigabitEthernet1/0/1) have their own authentication commands: authentication priority dot1x m...
Hello,I am a network engineer that is highly visually dependent in order to understand how things work and has of course chosen the field with the most non-visual work: networking.I think in drawings. I understand in drawings. Draw me something and t...
HiI have a problem with my cisco switch (catalyst 2960-x / 48FPD-L) after reinstalling a last version IOS on it, all the POE+ ports are not working and even detecting any POE devices. although I set up all ports on CLI to give auto power in line, sti...
