What is a characteristic of the LSR after TCP connections are established in LDP?

What is a characteristic of the LSR after TCP connections are established in LDP?

• A. It continues to send Hello messages.
• B. It sends Discovery messages periodically.
• C. It stops sending Hello messages.
• D. It can send requests for additional resources.

Answer: (C)

The correct answer is that after TCP connections are established in Label Distribution Protocol (LDP), the LSR (Label Switching Router) stops sending Hello messages. Hello messages are utilized during the discovery phase of LDP to identify available neighbors and establish initial communications settings between LSRs. Once the TCP connection is successfully established, the primary role of these Hello messages is no longer necessary, as the routers have already formed a reliable connection. The focus then shifts to the actual communication using the established TCP connections, allowing for more efficient data exchange and management of label bindings. While it's true that Discovery messages may be sent periodically as part of managing the LDP state, this does not pertain directly to the behavior of Hello messages after TCP sessions are established. The other options suggest ongoing or periodic communication patterns that are not relevant to the established state of the LDP connections.

The correct answer is that after TCP connections are established in Label Distribution Protocol (LDP), the LSR (Label Switching Router) stops sending Hello messages.

Hello messages are utilized during the discovery phase of LDP to identify available neighbors and establish initial communications settings between LSRs. Once the TCP connection is successfully established, the primary role of these Hello messages is no longer necessary, as the routers have already formed a reliable connection. The focus then shifts to the actual communication using the established TCP connections, allowing for more efficient data exchange and management of label bindings.

While it's true that Discovery messages may be sent periodically as part of managing the LDP state, this does not pertain directly to the behavior of Hello messages after TCP sessions are established. The other options suggest ongoing or periodic communication patterns that are not relevant to the established state of the LDP connections.