ma qiang
2010-Sep-21 06:02 UTC
[Xen-users] problem about using multiple network cards in Xen 3.4.3, again.
Hi all,
I have asked some questions about network several day ago. Now this is
my latest question. Thanks again.
this is how I config my physical machine:
====================begin of config==================================
#vi /etc/xen/scripts/multi-network-bridge
append:
#!/bin/sh
/etc/xen/scripts/network-bridge "$@" netdev=eth0 bridge=eth0
/etc/xen/scripts/network-bridge "$@" netdev=eth1 bridge=eth1
# chmod +x /etc/xen/scripts/multi-network-bridge
#vi /etc/xen/xend-config.sxp
change
(network-script network-bridge)
to
(network-script multi-network-bridge)
#service xend restart
======================end of config===================================
while I execute "ethtool peth0", I get information as follows:
Settings for peth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: d
Link detected: yes
this seems pretty normal. but the peth1 is not as good. when I execute
"ethtool peth1", I got:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised auto-negotiation: Yes
Speed: Unknown! (65535) ###########################
Duplex: Unknown! (255) ###########################
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
Supports Wake-on: g
Wake-on: d
Link detected: no ###########################
these lines ending with "###" is what I believe is abnormal.
then I created a domainU with two network cards:
vif=[ ''type=ioemu, mac=00:16:3E:63:7B:F4, bridge=eth0'',
''type=ioemu,
mac=00:16:3E:7F:B6:A3, bridge=eth1'' ]
and then I made a network performance test on the domainU, and I found out
the best performance the domainU could reach is 1000Mb/s( I mean, eth0 +
eth1 = 1000Mb/s). But I was expecting the sum should be 2000Mb/s, that is,
eth0=1000Mb/s, eth1=1000Mb/s, if you know what I mean.
from my own point of view, I believe it is because of the wrong
configuration of peth1, based on the fact that the result of "ethtool
peth1"
is abnormal.
so is there anybody could shed some light on this? I need to solve this
problem so badly. Thanks a lot!
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