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Considerations -Path Switch- Path switches when Several times(should be 3) of RTOs(cwnd->0) occurs. This typically takes about 10-20 sec. ICMP Error is received. (temporary network failure) Path is discarded when RST is the first received packet from that path. (the packet is probably from irrelevant host. e.g. private address) Path's address is deleted by either of nodes. When a path changes, window size is almost always set to 1MSS because of RTOs. Path Flapping Avoidance |