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【单选题】
客户局域网交换机 SWA 、 SWB 、 SWC 上构成 RRPP 环主环 1, 交换机 SWA 上有如下配置信息: [SWA] rrpp domain 1 [SWA-rrpp-domain1] control-vlan 4092 k 上述信息可以得知A.
交换机 SWB,SWC 上的主环控制 VLAN 可以与 SWA 不一致
B.
交换机 SWA 、 SWB 、 SWC 上所有端口都需要加入 VLAN4092
C.
交换机 SWA 、 SWB 、 SWCRRPP 环上接入 RRPP 环的端口都需要加入 VLAN 4092
D.
为了便于网络管理，可以在 VLAN4092 上配置 IP 管理地址
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