I faced a very strange issue and I am trying to dig down the exact cause for this. I had deployed new servers and connected them to a stack of 3850s. I tried creating a port-channel and the limitations of server prohibited me from doing so. I then decided to use physical interfaces only. I tried configuring interfaces as either trunk or access but it was no good. I was using VLAN of 120 for management. Once I allowed 120 as native(switchport trunk native vlan 120) and as well as tagged(switchport trunk allowed vlan 120) on trunk port the connectivity got established. Can someone help me out in finding the reason for this?
Thank you for your update. While allowing the same tag as native allows me the capability of sending untagged traffic on a trunk interface but tagging it makes native VLAN useless when are talking about the same tag. Doesn't it contradict itself or my idea of native VLAN is not correct?
What I mean here is if I have allowed untagged traffic of VLAN120(native VLAN) to pass through trunk(VLAN Tag 120) and under that I am also allowing it as tagged.
常见的数据中心之间通信均会采用运营商MSTP/OTN专线进行互联实现通信，由于长途线路价格昂贵通常我们需要最大化使用线路带宽，传统的网络传输中通常是尽力而为传输一旦突发流量较大就会发生线路拥塞的情况，从而影响业务正常通信传输。这时候我们可以采用Qos技术来实现数据中心思科设备之间关键网络流量保障，从而实现链路最大化利用。拓扑图场景如下：如上图，SW01是位于数据中心A的广域网接入Cisco Nexus 3048交换机，SW02是位于数据中心B的广域网接...
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