switching
Network switching fundamentals
Datos de origen
- Repositorio
- ffsshhttiikk/opencode-agents-skills
- Última actividad en el origen
- 28 de febrero de 2026 a las 22:55
- Idioma detectado de SKILL.md
- inglés
- Estrellas
- 3
- Forks
- 2
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SKILL.md
Instrucciones de origen · Vista previa de solo lectura- name
- switching
- description
- Network switching fundamentals
- license
- MIT
- compatibility
- opencode
- metadata
- {"audience":"network-engineers","category":"networking"}
## What I do
- Configure and manage network switches
- Implement VLANs and trunking
- Configure spanning tree protocols
- Set up switch stacking and stacking
- Manage VLAN routing (SVI)
- Implement port security
- Configure switch monitoring
## When to use me
Use me when:
- Designing local area networks
- Configuring access/aggregation switches
- Implementing network segmentation
- Troubleshooting connectivity issues
- Setting up switch infrastructure
## Key Concepts
### Layer 2 Switching
Switches operate at Layer 2, forwarding based on MAC addresses:
```
┌─────────────────────────────────────┐
│ Switch Forwarding │
├─────────────────────────────────────┤
│ MAC Address Table (CAM Table) │
│ Port 1: aa:bb:cc:dd:ee:ff │
│ Port 2: 11:22:33:44:55:66 │
│ Port 3: aa:bb:cc:dd:ee:11 │
└─────────────────────────────────────┘
Frames forwarded based on:
- Destination MAC known → Forward to port
- Unknown → Flood to all ports
- Broadcast → Flood to all ports
```
### VLAN Configuration
```cisco
! Create VLANs
vlan 10
name Data
vlan 20
name Voice
vlan 99
name Management
! Assign ports to VLANs
interface GigabitEthernet0/1
switchport mode access
switchport access vlan 10
spanning-tree portfast
! Trunk port
interface GigabitEthernet0/24
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan 10,20,99
```
### Spanning Tree Protocol
- **STP**: 802.1D, 50-second convergence
- **RSTP**: 802.1w, rapid convergence
- **MSTP**: 802.1s, multiple spanning trees
- **PVST+**: Per-VLAN STP (Cisco)
### Switch Features
- Port Security: Limit MAC addresses
- DHCP Snooping: Prevent rogue servers
- ARP Inspection: Prevent ARP spoofing
- Storm Control: Broadcast suppression
- QoS: Traffic prioritization
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