intermediate·20 min·付费
Trunk Missing a VLAN
One warehouse VLAN vanished across an inter-switch link while the other VLANs continued working.
场景
Norwood Maritime extended a warehouse VLAN to a second switch, and users on that floor can no longer reach the warehouse service. Other VLANs using the same inter-switch link continue to work, so the trunk itself is not simply down. Restore the affected VLAN across the link while keeping the existing segmentation intact.
学习目标
- trunk allowed-vlan list
- switch-to-switch trunking
- per-vlan vs whole-link failure
拓扑与配置
此环境包含 7 台设备（5 Hosts, 2 Switchs）。你将配置并排查上方列出的网络技能。
课程主题
认证考纲目标
- ccna-200-301 · 目标 2.2：Configure and verify interswitch connectivity (trunks, 802.1Q, native VLAN)
- comptia-network-plus-n10-009 · 目标 2.2：Configure switching technologies and features