[{"createTime":1735734952000,"id":1,"img":"hwy_ms_500_252.jpeg","link":"https://activity.huaweicloud.com/cps.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=V1g3MDY4NTY=&utm_medium=cps&utm_campaign=201905","name":"华为云秒杀","status":9,"txt":"华为云38元秒杀","type":1,"updateTime":1735747411000,"userId":3},{"createTime":1736173885000,"id":2,"img":"txy_480_300.png","link":"https://cloud.tencent.com/act/cps/redirect?redirect=1077&cps_key=edb15096bfff75effaaa8c8bb66138bd&from=console","name":"腾讯云秒杀","status":9,"txt":"腾讯云限量秒杀","type":1,"updateTime":1736173885000,"userId":3},{"createTime":1736177492000,"id":3,"img":"aly_251_140.png","link":"https://www.aliyun.com/minisite/goods?userCode=pwp8kmv3","memo":"","name":"阿里云","status":9,"txt":"阿里云2折起","type":1,"updateTime":1736177492000,"userId":3},{"createTime":1735660800000,"id":4,"img":"vultr_560_300.png","link":"https://www.vultr.com/?ref=9603742-8H","name":"Vultr","status":9,"txt":"Vultr送$100","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":5,"img":"jdy_663_320.jpg","link":"https://3.cn/2ay1-e5t","name":"京东云","status":9,"txt":"京东云特惠专区","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":6,"img":"new_ads.png","link":"https://www.iodraw.com/ads","name":"发布广告","status":9,"txt":"发布广告","type":1,"updateTime":1735660800000,"userId":3},{"createTime":1735660800000,"id":7,"img":"yun_910_50.png","link":"https://activity.huaweicloud.com/discount_area_v5/index.html?fromacct=261f35b6-af54-4511-a2ca-910fa15905d1&utm_source=aXhpYW95YW5nOA===&utm_medium=cps&utm_campaign=201905","name":"底部","status":9,"txt":"高性能云服务器2折起","type":2,"updateTime":1735660800000,"userId":3}]
环境描述:
虚拟化平台:vmare5.5
物理机系统:esxi
虚拟机:centos7.5
交换机2台:锐捷和华为
机柜位置–》上面的交换机是华为的
26机柜1台物理机ip
10.1.1.1
机柜位置–》上面的交换机是锐捷的
12机柜 3台物理机IP
10.1.1.2
10.1.1.3
10.1.1.4
物理机插了2个网线,
a网线是物理机-管理网10.1.1.2
b网线是分配的是 vlan120 ,网段20.0.0.1/24
问题:
12机柜的3台物理机搭建的vlan120网段的虚拟机ping不通网关
第一步:我们初步怀疑是交换机的问题,让网络的同事检查一下交换机是否正常,网络的同事也查了配置说是正常的,在交换机上面直接插网线接笔记本,修改vlan120网段ping网关正常;给出反馈,交换机是正常的;
我自己又把12机柜的锐捷交换机的网线,插其他机柜的物理测试,配置vlan120网段ping网关正常
第二步:怀疑是vmare层面的虚拟交换机有问题,我自己看这个虚拟机换配置也看不出什么异常,后面让公司专门搞vmare平台的同事远程协助,测试调整,也未发现异常;
经过反复的折腾和讨论,最后觉得会不会是服务器的网卡坏了,然后打电话让服务器厂商免费更换网卡,死马当活马医。
第三步:让厂商换网卡,继续测试,还是不通;
第四步:厂商换网卡的中途,我回想起昨天晚上的思路;从26机柜上面的交换机接一根线,插12机柜上面测试一下vlan120,看是不是交换机的配置有问题;找了几根网线,加网线拼接器,终于把网线插好了,ping网关通了,好吧!!!最后终于知道是交换机的配置问题。
第五步:协调网络修改交换机配置,原来配置的是access 模式
12机柜物理机对应交换机后面的24,25,26口,换成了trunk模式,测试正常;
交换机VLAN 模式trunk和access 区别
access模式只能承载一个vlan的流量
trunk端口可以允许多个VLAN的数据包通过