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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...

hi all,i have a little confuse about the command " no ip dhcp conflict logging ".i know this command is to disable logging the ip conflict. but as i know, DHCP will ping the IP which will assign to make sure the IP not be used.if the IP be used, will...

ronald.su by Level 1
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I have multiple setups with these network switches. At least on two different setups, we have connection issues with one of the ports (port #24). We verified that the port configuration has changed and the reminder of the ports configurations remain ...

eddie8 by Level 1
  • 497 Views
  • 12 replies
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Dear allWe are currently running 7x C9300-48P all with IOS-XE 17.12.XX.We are experiencing a strange issue where on 5x of the devices we get high latency when pinging the virtual switch interface that is used for CLI access. But it is only happening ...

mar0n by Level 1
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  • 7 replies
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3512XL, Tera Term serial consoleI think BAUD is set correctly because the switch responses to commands like enable but the characters are unrecognizable...What can be the cause of this problem?I tried recovery mode with 9600 BAUD and the image is wha...

I need to make sure that our Nexus switches are hardened on the Internet and I'm really bothered that the ACL for SNMP works but leaves the port open. The ACL works in that if I attempt this from a host not allowed in the ACL, the Nexus will not acce...

jradke by Level 1
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Hello everyone.What's your experience with xFSU upgrades? I know this feature is there for a while, but I don't know anyone that actually used in production.We are planning to upgrade a stack of C9300-48UXM, from 17.12.03 to 17.12.06.We can do it in ...

Htonieto by Level 1
  • 181 Views
  • 1 replies
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I have a C1200-24P-4G switch. For some reason even though i have enabled advanced view on the GUI, I cannot see all the 802.1x settings that the admin guide refers to. For example, the options for MAB is missing. When i go to port authentication and ...

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eshaq786 by Level 1
  • 371 Views
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Just a simple question why it's recommended to use both Portfast and BPDU Guard together apart from the very fact that both should be used in access switches ports connecting to end users?? Like BPDU Guard will still work if I don't have portfast con...

Is there a way to setup auto config rollback on NEXUS 5k / 7K, where if I make a config mistake and lost access to the device being configured, after X minutes, if I don't intervene, the device auto undo the changes.  This has been available on IOS f...

tachyon05 by Level 1
  • 2863 Views
  • 6 replies
  • 1 Helpful votes

switch reboot after get  log  How to fix this problem ?2147483644 2024-Feb-09 00:13:49 Emergency %DNS_CLIENT-F-SRCADDRFAIL: Result is 2. Failed to identify address for specified name 'time-c.timefreq.bldrdoc.gov.', requested addr type 1. ***** FATAL ...

sirising by Level 1
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  • 2 replies
  • 0 Helpful votes