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Full Discussion: Configure VIOS SEA w. load sharing
Operating Systems AIX Configure VIOS SEA w. load sharing Post 302681263 by bakunin on Friday 3rd of August 2012 05:10:48 AM
Old 08-03-2012
SEA with Load-sharing How-To
OK, as promised, here is the How-To. First off, it was basically an occurrence of PEBKAC on my side, but once i straightened this out it worked fairly straightforward. You might want to read the following documents for reference:

How to Setup SEA Failover on DUAL VIO servers

Shared Ethernet Adapter (SEA) Failover with Load Balancing

Tips for implementing PowerHA in a virtual I/O environment


1. Build EtherChannel
=============

Code:
# lsdev -type adapter | grep '10 Gigabit Ethernet Adapter'
ent7             Available   10 Gigabit Ethernet Adapter (ct3)
ent8             Available   10 Gigabit Ethernet Adapter (ct3)

# chdev -dev ent7 -attr flow_ctrl=yes large_receive=yes large_send=yes
ent7 changed
# chdev -dev ent8 -attr flow_ctrl=yes large_receive=yes large_send=yes
ent8 changed

# mkvdev -lnagg ent7,ent8 -attr mode=8023ad hash_mode=src_dst_port
ent9 Available
en9
et9



2. Build SEA on the EtherCannel Device
========================

This is the critical part, where i failed before: for every external VLAN there has to be a distinct internal VLAN to match. We have 5 external VLANS here and for every VLAN there is one virtual adapter defined. The adapters are created with a priority of 1 on the "primary" VIOS and 2 on the "secondary" VIOS, every other property stays identical. The control channel has only an internal VLAN (ID=99) because it is only internally used.

Code:
# lsdev -slots | grep ent
U9119.FHB.841DC07-V1-C2      Virtual I/O Slot  ent0
U9119.FHB.841DC07-V1-C3      Virtual I/O Slot  ent1
U9119.FHB.841DC07-V1-C4      Virtual I/O Slot  ent2
U9119.FHB.841DC07-V1-C5      Virtual I/O Slot  ent3
U9119.FHB.841DC07-V1-C6      Virtual I/O Slot  ent4
U9119.FHB.841DC07-V1-C7      Virtual I/O Slot  ent5
U9119.FHB.841DC07-V1-C8      Virtual I/O Slot  ent6

# for i in ent0 ent1 ent2 ent3 ent4 ent5 ent6 ; do
     echo $i ; entstat -all $i | grep -E 'Port VLAN ID|VLAN Tag IDs'
done

ent0
Port VLAN ID:     1
VLAN Tag IDs:   <first external VLAN-ID>
ent1
Port VLAN ID:     2
VLAN Tag IDs:   <second external VLAN-ID>
ent2
Port VLAN ID:     3
VLAN Tag IDs:   <third external VLAN-ID>
ent3
Port VLAN ID:     4
VLAN Tag IDs:   <fourth external VLAN-ID>
ent4
Port VLAN ID:     5
VLAN Tag IDs:   <fifth external VLAN-ID>
ent5
Port VLAN ID:    99
VLAN Tag IDs:  None
ent6
Port VLAN ID:   <external VLAN-ID>
VLAN Tag IDs:  None

# mkvdev -sea ent9 -vadapter ent0,ent1,ent2,ent3,ent4 \
         -default ent0 -defaultid 1 \
         -attr ha_mode=sharing accounting=enabled largesend=1 \
                large_receive=yes ctl_chan=ent5
ent10 Available
en10
et10

Note that "load balancing" is not done, at least not in the classical way. In fact this setup serves the first (third, fifth, ...) VLAN over the first route (first SEA) and the second (fourth, sixth, ...) over the second. It is advisable, therefore, to sort the VLANs based on expected traffic prior to defining the adapters to balance the load as good as possible.


I hope this helps.

bakunin
Last edited by bakunin; 08-03-2012 at 09:00 AM..
These 2 Users Gave Thanks to bakunin For This Post:
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