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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...

dbronco by • Level 1
  • 986 Views
  • 27 replies
  • 0 Helpful votes

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...

vv0bbLeS by • Level 3
  • 84 Views
  • 3 replies
  • 0 Helpful votes

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...

AttaQ by • Community Member
  • 133 Views
  • 3 replies
  • 0 Helpful votes

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...

No valid AP manager found.png

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 ...

somnath-ray by • Community Member
  • 80 Views
  • 4 replies
  • 0 Helpful votes

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 ...

Mitrixsen by • Level 1
  • 58 Views
  • 0 replies
  • 0 Helpful votes

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: ...

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...

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shahi22 by • Level 1
  • 366 Views
  • 12 replies
  • 0 Helpful votes
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