[多选] Virtual PortChannels （vPCs） allow links that are physically connected to two different Cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. Which of the following are components of a Virtual PortChannel system？（）

A . Two peer devices： the vPC peers of which one is primary and one is secondary and are part of a vPC domain.
B . A Layer 3 Gigabit Ethernet link called peer-keepalive link to resolve dual-active scenarios
C . A redundant 10 Gigabit Ethernet PortChannel called a peer link to carry traffic from one system to the other when needed
D . vPC member ports forming the PortChannel
E . A dot1q trunk between the vPC peers
F . A management port that can be used as peer-keepalive link to resolve dual-active scenarios.

刑事侦查情报工作与其他公安工作的纽带是（）刑事情报分析。刑事情报利用。刑事情报传递。刑事情报搜集。端口安全，问violation什么模式仍然允许转发流量？费马原理 What best describes the usage of Route-Target rewrite？（） Route-Target Rewrite is mainly used in Inter-AS MPLS-VPN deployments and is configured at the PErouter in originating AS ASBR to avoid misconfiguration in Route-Target assignment for VPN configurations.。 Route-Target Rewrite is mainly used in Inter-AS MPLS-VPN deployments and is configured at the route-Reflector in originating AS ASBR to avoid misconfiguration in Route-Target assignment for VPN configurations.。 Route-Target Rewrite is mainly used in Inter-AS MPLS-VPN deployments and is configured at the ASBR to avoid misconfiguration in Route-Target assignment for VPN configurations.。 None of the above.。先秦时期最重要的设计著作是（）《吕氏春秋》。《考工记》。《天工开物》。《园冶》。 Virtual PortChannels （vPCs） allow links that are physically connected to two different Cisco switches to appear to a third downstream device as coming from a single device and as part of a single port channel. Which of the following are components of a Virtual PortChannel system？（）

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