多项选择题
What are two ways that a valid IBGP peering session can be configured?（）
A. via the accept x.x/y command B. via TCP reachable physical interface addresses C. via remote loopbacks with the local-address command D. via UDP with the neighbor x.x.x.x command at the group level
单项选择题 Once the TCP connection is established, which message type initiates the BGP peering process?（）
多项选择题 What are two purposes of the AS_PATH attribute?（）
单项选择题 What is the first step in BGP route selection?（）
