FAQ-When the AR Router Functions as the PPPoE Client, the Connected LAN Users Access the Internet Slowly. How Is This Problem Solved?
The MTU of the PPPoE-enabled interface is 1492 bytes. When the MTU of outgoing Layer 3 packets on this interface is greater than 1492 bytes and the packets are configured as non-fragmented, packets cannot be sent out. The Internet access speed is slow. You can run the tcp adjust-mss value command on the dialer interface to change the Max Segment Size (MSS) value so that the packet length is smaller than the dialer interface. The packets then can be processed and this problem is solved.