Hi,

This is probably more of a networking issue but it may well be bridge
specific.

I was looking at the output from ifconfig the other day and was trying to
work out how much 'stuff' had gone through the bridge in its 100days
uptime but I can't make much sense out of it. Here's the output (eth0 is
connected to the outside world, eth1 to our local area):

br0       Link encap:Ethernet  HWaddr 00:00:21:66:14:54
          inet addr:138.253.x.x  Bcast:138.253.255.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:44659327 errors:0 dropped:0 overruns:0 frame:0
          TX packets:521221 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1563336578 (1490.9 Mb)  TX bytes:709294220 (676.4 Mb)

eth0      Link encap:Ethernet  HWaddr 00:90:27:CA:E3:C8
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:105807934 errors:10 dropped:0 overruns:2 frame:17920323
          TX packets:53124137 errors:0 dropped:0 overruns:0 carrier:855
          collisions:3434939 txqueuelen:100
          RX bytes:231790215 (221.0 Mb)  TX bytes:4103016707 (3912.9 Mb)
          Interrupt:11 Base address:0x2000

eth1      Link encap:Ethernet  HWaddr 00:00:21:66:14:54
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:155722064 errors:1 dropped:0 overruns:0 frame:609458
          TX packets:93922393 errors:176 dropped:0 overruns:0 carrier:189
          collisions:434266 txqueuelen:100
          RX bytes:1721287803 (1641.5 Mb)  TX bytes:1761488571 (1679.8 Mb)
          Interrupt:10 Base address:0x300

What I'm trying to work out is how the RX/TX sums for eth0, eth1 and br0
are related. Are the sums for br0 purely for connections made to the
'virtual network device' br0 (eg scp-ing things from the firewall) or is
it linked in any way with eth0/1?

I don't see how eth0 can only have received 221MB when I know I've dragged
at least 3GB through it recently mirroring SuSE 7.3. But the transmitted
bytes seem to tally reasonably ok with this, although this seems to be the
wrong way round.

Am I assuming to much here?

Cheers,
       JB

-- 
John Bland M.Phys (Hons) AMInstP /    \ PhD Student & Sys Admin
Email: j.bland at cmp.liv.ac.uk /      \ Condensed Matter Group
http://ringtail.cmp.liv.ac.uk/ /        \ Liverpool  University
                    "'andsome!" -- 'orrible

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