Activity in Technology and Support
VLAN issues
I recently replaced the core switch at one of my sites that consisted of two separate C9300-48Ts and three other off brand switches and installed a new stack with a C9300X-48HX, C9300-24S and a C9300-48T (running 17.12.5). This is a layer 2 network c...
Criteria for a network to be strictly "Layer 3" vs "Layer 2"
Hello all,I have read about networks being described as "only Layer 3," and as such require no STP protocol, examples being VXLAN-based networks like Cisco SDA or ACI.However, even these networks have VLAN's (like L2 VNID's in SDA), and they also sti...
APIC M2 TO M4 Migration
Hi everyone, We’re planning to migrate from Cisco APIC M2 to M4 hardware in a Multi-Pod environment. Our current setup includes a single-node APIC cluster running version 5.3, and I’d like to gather input from those who’ve handled similar upgrades. O...
wireless not working login
I have a problem with my Cisco wireless, the login is incorrect, does anyone know a solution?
Router 8200 crashed CpuCatastrophicError Version 17.09.04a
Hi , our router suddenly crashed, does anyone know about a bug in the version? Version 17.09.04a Thanks
No valid AP manager found for controller
Hi, After upgrade Cisco 5520 WLAN controller from 8.5.151.0 to 8.10.151.0, all Cisco 2802 APs couldn't join controller, however Cisco 2702 AP joins. By looking into AP console, it says 'No valid AP manager found for controller' It seems AP downloade...
IE3400 Ring Topoloy - CLI
Hello All,While configuring an MRP ring on Cisco IE3400 switches (non‑PROFINET, Layer‑2), I observed that the “gateway” field in the show mrp ring output, currently showing Status: Disabled.I have reviewed the publicly available Redundancy Protocol ...
Roaming between different mobility groups
Hello, everyone. I understand that seamless roaming involves two parts:- Maintaining the client's IP address so they don't have to request DHCP again- Caching of credentials and roaming enhancements (such as 802.11r, CCKM, etc) so the client doesn't ...
以下的日志是什么问题造成
近期我得BGP状态状态down，提示是BGP内存不足，但是查看系统内存使用不到50%2025 Jul 15 11:14:54 %BGP-3-INTERNAL_INFO: bgp-[31154] Malloc HWM bytes 24469271892025 Jul 15 11:14:54 %BGP-3-INTERNAL_INFO: bgp-[31154] Smalloc current bytes 8772402025 Jul 15 11:14:54 %BGP-3-INTERNAL_INFO: ...
STUCK IN DISCOVERING - ACI MULTIPOD
Hello everyone,Currently, I have been setupting ACI multipod.APIC on POD 1 have seen SPINE at POD2, but when i register it to fabric which is stuck in discoveringi have to use IPN in order to Connecting Multipod,MTU is 9216
A guide to SIP Normalization on CUCM and Lua Scripting
I have recorded this guide for SIP Normalization on call manager and also have elaborated a little bit on how we use the Lua scripting. A SIP Normalization script could really help the customer as a workaround or a permanent solution for issues rel...
Connect Coral IPx 3000 exchange to remote phones
I have 60FXS-2E1 PCM and a 60FXO-2E1 PCM multiplexor, I want to connect to remote analogy phones. want my telephone exchange to connect remote telephones using my multiplexors. anyone to help.
VPC-NX-9k-VRF-Routing-Vlans-int Vlans
I configure both cores (1 & 2).Create a VRF for each int VLAN.And default route for each vrfBecause router connect to Core1I create on this router two sub-ints, one for vrf DMZAnd another for Inside-ZoneSo the default route for VRF DMZ, inside each c...
Issue Add license Webex
Spoiler I added a webex license to my account but at this step I got an error like this. Can you help me? How can I manage my own license that is not related to my existing organization? I added a webex license to my account but at this step I got a...
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