Comware

Hello,

We would like to use Linux (RHEL5.3) NIC bonding mode 4 (IEEE 802.3ad Dynamic link aggregation) on HP Blade BL460c's, but are having some trouble getting it working with a Procurve 5406. Mode 1 seems to work fine, but as soon as we switch to Mode 4 and reboot the server, we start seeing at least 50% packet loss to/from that server.

/etc/modprobe.conf:
alias bond0 bonding
options bond0 bonding mode=4 miimon=100 use_carrier=0
alias eth0 bnx2x
alias eth1 bnx2x

Switch config (important sections below):

interface B7
name "server001-trk7"
flow-control
lacp Passive
exit
interface A7
name "server001-trk7"
flow-control
lacp Passive
exit

trunk A7,B7 Trk7 LACP

vlan 10
untagged Trk7
ip address 10.10.10.10 255.255.255.0
exit

spanning-tree Trk7 priority 4

according to : http://www.linuxhorizon.ro/bonding.html
did you check Pre-requisites:
- Ethtool support in the base drivers for retrieving the speed and duplex of each slave.
- also did you specify a mac-adress for the bond interface?

Thanks for the reply, Pieter 't Hart.

Yes, both NICs support 'ethtool' (see below), and I am not using a MAC in the bonded config (see below):



# ethtool eth0|grep -i -e speed -e link
Supported link modes: 1000baseT/Full
Advertised link modes: 1000baseT/Full
Speed: 1000Mb/s
Link detected: yes

# ethtool eth1|grep -i -e speed -e link
Supported link modes: 1000baseT/Full
Advertised link modes: 1000baseT/Full
Speed: 1000Mb/s
Link detected: yes



# cat ifcfg-bond0
DEVICE=bond0
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.10.10.25
NETMASK=255.255.255.0
GATEWAY=10.10.10.10

Ahhh, lacp active with no trunking seems to have it working:

interface A13
name "server002-trk13"
flow-control
lacp Active
exit
interface C13
name "server002-trk13"
flow-control
lacp Active
exit

Then we just 'untagged' both ports into the VLAN we wanted, voila!

lacp Active on each port, disabled trunking, and untagged each port in the proper vlan, works like a champ...