When a BGP router is not capable of understanding 4-byte AS numbers， it will see 4-byte AS numbers as a special， reserved， 2-byte AS number in the AS path. Which 2-byte AS number is this reserved one？（）
- A、00000
- B、12345
- C、23456
- D、65000
- E、99999
正确答案:C
答案解析:有
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