各位高手，请帮我分析一下网络流量的问题

[rodney]

我这里有一张网络核心交换机一个端口的流量信息，请各位指点一下哪个是上行数据，哪个是下行数据？数据有什么问题？请帮忙
Port: et.2.1
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Port Stats Received Transmitted
---------- -------- -----------
Frames/Packets 677251258 570463160
. Switched frames (bridging) 3451799 3730972
. Local frames (bridging) 0 N/A
. Routed packets 673799459 566732188
. Switched (data) (2ports*) 676770202 N/A
. Consumed by CPU (2ports*) 13229 N/A
Bytes 483407553877 57477863625
. Bridged bytes 520241254 1216929647
. Routed bytes 482887312623 56260933978
L2 table misses 703 N/A
IP table misses (2ports*) 18390129 N/A
IPX table misses (2ports*) 0 N/A
IP TTL expirations (2ports*) 212 N/A
IPX TC expirations (2ports*) 0 N/A
1 minute traffic rates
. Average bits/sec 7518098 957618
. Packet discards 0 0
. Packet errors 0 0
. Unicast packets 80548 73555
. Multicast packets 6 42
. Broadcast packets 19 42
Port stats cleared * Never Cleared *