Which attributes meet the following two conditions: (1) A BGP router (Router A) can choose whether to carry this attribute in an Update packet. (2) If a receiving router (Router B) cannot identify this attribute, this router can advertise this attribute to another BGP router (Router C).

Which attributes meet the following two conditions: (1) A BGP router (Router A) can choose whether to carry this attribute in an Update packet. (2) If a receiving router (Router B) cannot identify this attribute, this router can advertise this attribute to another BGP router (Router C).

Router C may be able to identify and use this attribute. (Multiple Choice)
A . Aggregator
B . Local_Pref
C . Multi_Exit_Disc
D . Community

View Answer

Answer: AD