注意事项
- FEX不需要lincense支持;
- NX-OS 5.2开始支持基于FEX的VPC;
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N7K支持连接FEX的线卡FEX can be connected to the following parent line cards:
● 32 X 10-Gbps ETH ports line card (N7K-M132XP-12 and N7K-M132XP-12L)
● 48 X 1/10-Gbps ETH ports line card (N7K-F248XP-25)
Models of FEX supported as of NX-OS 6.0 are:
● 2232PP (32 X 1/10-Gbps fiber Host Interface and 8 X 10-Gbps FEX uplinks)
● 2248 (48 X 100-Mbps/1-Gbps copper Host Interface and 4 X 10-Gbps FEX uplinks)
● 2224 (24 X 100-Mbps/1-Gbps copper Host Interface and 4 X 10-Gbps FEX uplinks)
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组网拓扑
- 连接模式:Server双上联到2个FEX,每个FEX连接到一台7K,2台7K组成一个VPC;
- 每台FEX最大支持8根线路上联,总共可达16根;
- FEX的型号不需要相同;
- Portchannel中不能混合光口和电口,比如一边是2248支持电口上联,而另一边是2232PP支持光口上联;
- 为管理方便,建议使用相同的FEX型号上联;
- 默认情况下连接主机端口配置budp guard,并且不能关闭,如果此接口收到BPDU将进入err-disable状态;
- N7K不支持EVPC(如下图所示),只有N5K支持EVPC;
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不支持的拓扑-1:EVPC(5K支持)
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不支持的拓扑-2:Server一条上连N7K,一条上联FEX