我国首个IPv6公共DNS正式发布

下一代互联网国家工程中心正式宣布推出IPv6公共DNS:240c::6666。通过免费提供性能优异的公共DNS服务,为广大IPv6互联网用户打造安全、稳定、高速、智能的上网体验,助力我国《推进互联网协议第六版(IPv6)规模部署行动计划》全面落实。同时,工程中心还联合全球IPv6论坛(IPv6 Forum)启动IPv6 公共DNS的全球推广计划,旨在为全球用户提供更优质的上网解析服务。

继续阅读我国首个IPv6公共DNS正式发布

NXOS配置技巧二-模块预先配置

关于模块预先配置

The pre-provisioning feature allows you to preconfigure interfaces before inserting or attaching a module to a Cisco Nexus 5000 Series switch. If a module goes offline, you can also use pre-provisioning to make changes to the interface configurations for the offline module. When a pre-provisioned module comes online, the pre-provisioning configurations are applied. If any configurations were not applied, a syslog is generated. The syslog lists the configurations that were not accepted.
In some Virtual Port Channel (vPC) topologies, pre-provisioning is required for the configuration synchronization feature. Pre-provisioning allows you to synchronize the configuration for an interface that is online with one peer but offline with another peer.
继续阅读NXOS配置技巧二-模块预先配置

解决NVI NAT端口UP生效的问题

最近使用NVI NAT出现了一点问题,可能是一个BUG。就是启用ip nat enable的端口up了NVI NAT的映射才会生效。反之,当设备重启Dialer1口最初为down的;或者Dialer1口地址释放重新拨号后NVI NAT就会失效。

此时解决方法就是重新配置NVI NAT即可生效。但是不是权益之计。
继续阅读解决NVI NAT端口UP生效的问题