Hi
All,
I have a
bridge set up thusly:
brctl addbr
br0
# Create the bridge.
brctl addif br0
eth2
# Add eth2
brctl addif br0 eth3 # And eth3
brctl addif br0 eth3 # And eth3
brctl setfd br0
0
# Forward immediately.
brctl stp br0
off
# Turn off Spanning Tree.
ifconfig eth2
up
# bring up eth2
ifconfig eth3 up # Bring up eth3
ifconfig br0 up # Bring up the bridge.
ifconfig eth3 up # Bring up eth3
ifconfig br0 up # Bring up the bridge.
Which seems to
bridge OK. However, I have noticed that the bridge appears to be truncating some
packets. In particular, I am worried about packets such as IP ACK's, which are
entering the bridge as 64-byte packets, but coming out the other side as 60-byte
packets.
As I recall, the
smallest valid ehternet packet is 64 bytes. The bridge seems to be removing any
padding in the packet and sending it on it's way as a packet smaller than the
minimum ethernet packet size.
Looking at the
packet distribution on other devices connected to the bridge, it seems to be
doing the same to lots of other packets, too.
Anybody got any idea
why the bridge might be truncating packets?
Any idea why it's
sending 60-byte packets, when the minimu should be 64? Or where to tell it to
pad all packets out to 64 bytes?
Leigh.
Regards,
Leigh
Leigh
Leigh Sharpe
Network Systems Engineer
Pacific Wireless
Ph +61 3 9584 8966
Mob 0408 009 502
Network Systems Engineer
Pacific Wireless
Ph +61 3 9584 8966
Mob 0408 009 502
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