首先，当提到“机箱”时，它几乎总是暗示物理机箱，而不是您问题中的配置语句。

也就是说，机箱配置语句是与机箱和其中安装的组件（FPC、SCB、RE、工艺接口等）直接相关的设置。

这里有几个例子，希望能提供一些额外的背景信息。

1. 网络服务

网络服务配置与某些硬件相关功能的启用/禁用或扩展方式有关。这也可以确定某些类型的物理硬件组件（通常是线卡）是否也被启用/禁用。

root@vmx6# set chassis network-services ?
Possible completions:
  enhanced-ethernet    Enhanced ethernet network services
  enhanced-ip          Enhanced IP network services
  ethernet             Ethernet network services
  ip                   IP network services

2. 路由引擎冗余

路由引擎冗余设置允许您确定当路由引擎上的硬盘驱动器遇到问题时会发生什么。有了这些，您可以告诉路由引擎完全关闭或者只是重新启动。

root@vmx6# set chassis redundancy failover ?
Possible completions:
+ apply-groups         Groups from which to inherit configuration data
+ apply-groups-except  Don't inherit configuration data from these groups
  disk-read-threshold  Read threshold (ms) on disk underperform monitoring (1000..10000)
  disk-write-threshold  Write threshold (ms) on disk underperform monitoring (1000..10000)
  not-on-disk-underperform  Prevent gstatd from initiating failovers in response to slow disks
  on-disk-failure      Failover on disk failure
  on-loss-of-keepalives  Failover on loss of keepalives