故障描述 经用户反馈,一台cisco2960x接入交换机的一个端口插网线不通,ip电话也没有poe供电. 排查过程 查看交换机端口状态,发现变成了errdisable: ZH_HQN_SW2960X_04#show int g1/0/14GigabitEthernet1/0/14 is down, line protocol is down (err-disabled) 从官方文档找到恢复的方法: errdisable recovery cause all 接下来就可以查看errdisable的
导致交换机端口呈现err-disable状态的原因有很多,为方便大家查询,特归纳如下: 1. duplex mismatch (A is correct) 2. port-channel misconfiguration 3. Bridge Protocol Data Unit (BPDU) Guard violation 4. UniDirectional Link Detection (UDLD) condition (B is correct) 5. late-collision de
思科交换机可以根据客户端mac地址限制访问 查看对应IP的mac地址及vlan show arp | in 10.1.62.188 进入设置模式 configure terminal mac address-table static 488a.d22e.bea9 vlan 656 drop 其中488a.d22e.bea9为该主机对应mac地址,656为对应的vlan
1. 宿主机重启自动恢复虚拟机运行状态 1.1 参数描述与默认值 # Whether to start guests that were running before the host rebooted (boolean # value) #resume_guests_state_on_host_boot=false 1.2 修改配置为状态恢复 resume_guests_state_on_host_boot=true