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08-05-2014 01:09 AM
08-05-2014 01:09 AM
Slow transfer rate on VLAN with HP 1Gb Ethernet Pass-Thru Module for c-Class C7000
Hi,
I have a C7000 infrastructure and two BL460c G6 with four NIC (two: Broadcom Corporation NetXtreme II BCM57711E 10-Gigabit PCIe + two: Broadcom Corporation NetXtreme BCM5715S Gigabit Ethernet (rev a3))
For connect server to my network I use the module "HP 1Gb Ethernet Pass-Thru Module for c-Class".
I have tested the speed with iperf between physical eth and I reach 940 Mbits/sec, but if I test the speed with iperf on a VLAN (on the same physical eth) I reach 15 Mbits/sec.
Why this behavior?
The firmware on the On Board Administration is 4.22 and the firmware on the pass-thru module is 3.0.3.
The switch I use is an Hp 2510 with the following (simplified) config:
; J9279A Configuration Editor; Created on release #Y.11.16
[...]
vlan 508
untagged 1-6,15-19,21-24,Trk1-Trk2
ip address (x.x.x.x) 255.255.255.0
exit
vlan 506
name "VlanRSE6"
tagged 23-24,Trk1-Trk2
exit
[...]
On both server running Debian and the network configuration is:
Server1:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.9.8.1
netmask 255.255.255.0
gateway 10.9.8.254
auto vlan506
iface vlan506 inet static
address 10.9.6.1
netmask 255.255.255.0
gateway 10.9.6.254
vlan_raw_device eth0
iface eth1 inet manual
iface eth2 inet manual
iface eth3 inet manual
Server1:~#
Server2:~# cat /etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 10.9.8.2
netmask 255.255.255.0
gateway 10.9.8.254
auto vlan506
iface vlan506 inet static
address 10.9.6.2
netmask 255.255.255.0
gateway 10.9.6.254
vlan_raw_device eth0
iface eth1 inet manual
iface eth2 inet manual
iface eth3 inet manual
Server2:~#