Question about tap devices

kirelgt

Member
Nov 16, 2010
85
0
6
Hello everyone.

I have a 1 Giga network. eth0 and eth1. I bond these two interfaces to bon0 and assign this bond0 to vmbr0. Now when I do a ifconfig -a I can see some tap devices being created. The question is that I can see these tap devices run at 10Mbps and this is really worrying me. Does anyone knows if because of this tap devices the VM are only running at 10Mbps.
 
Hello everyone.

I have a 1 Giga network. eth0 and eth1. I bond these two interfaces to bon0 and assign this bond0 to vmbr0. Now when I do a ifconfig -a I can see some tap devices being created. The question is that I can see these tap devices run at 10Mbps and this is really worrying me. Does anyone knows if because of this tap devices the VM are only running at 10Mbps.

hello evrybody,
I have exactly the same problem with the bond0 interface (802.3ad mode) .Mii-tool "bond0" and netperf tests notice me that i have only a bandwidth of 10 Mbits with half duplex, although i use two physical slaves interfaces of 1 Giga capacity!!!!!!!!!!!! I tested this bonding feature on a different Redhat-based System (Centos6) and i still had exactly the same problem. I haven't found any solution to this problem on the web.
Could anyone help me because i i'd like to use this bonding feature in a production environment to increase the bandwidth (performance) and the availability of my servers.
here is the output of my bond interface and the slaves interfaces:
for bond0:
mii-tool -vv bond0
Using SIOCGMIIPHY=0x8947
bond0: 10 Mbit, half duplex, link ok
registers for MII PHY 0:
0004 0004 0004 0004 0004 0004 0004 0004
0004 0004 0004 0004 0004 0004 0004 0004
0004 0004 0004 0004 0004 0004 0004 0004
0004 0004 0004 0004 0004 0004 0004 0004
product info: vendor 00:01:00, model 0 rev 4
basic mode: 10 Mbit, half duplex
basic status: link ok
capabilities:

and for the slaves interfaces (eth0 and eth2):

mii-tool -v eth0 (the same output for eth2)
eth0: negotiated 1000baseT-FD, link ok
product info: vendor 00:50:ef, model 60 rev 8
basic mode: autonegotiation enabled
basic status: autonegotiation complete, link ok
capabilities: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
advertising: 1000baseT-FD 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
link partner: 1000baseT-FD 100baseTx-FD 10baseT-FD flow-control

Thanks again for the help and sorry for my english!!
 

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