If an announcement route entry is deleted on a BGP route, it will trigger the BGP router to send a Update message of route revocation, which carries the recognized mandatory attributes of the revoked route entry.

Broadcast-type network, starting the election of DIS after the establishment of the neighbor relationship.

As shown in the figure, three switches SW1, SW2 and SW3, where SW1 is the root bridge, the link between SW1 and SW2 is congested, and SW2 cannot receive the configuration BPDU sent by the root bridge. Which spanning tree protection mechanism does the administrator need to configure to prevent link congestion?

Which of the following descriptions about VRRP load sharing is correct? (Multiple Choice)

Between two directly connected devices that have established IBBP neighbors, execute the shutdown command to shut down the interface of one of the devices, and the BGP connection will not be disconnected immediately.