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Saturday 20 June 2015

Creating a SEA in a VIO

Contents

·         1 Creating a SEA in a VIO
·         2 Comments

Creating a SEA in a VIO

We will see how to create a SEA to bridge packets to client LPAR

Get the list of current devices in VIOs

$ lsdev -type adapter
name             status      description
ent0             Available   2-Port 10/100/1000 Base-TX PCI-Express Adapter (14104003)
ent1             Available   2-Port 10/100/1000 Base-TX PCI-Express Adapter (14104003)
ent2             Available   Virtual I/O Ethernet Adapter (l-lan)
fcs0             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs1             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
pager0           Available   Pager Kernel Extension
vasi0            Available   Virtual Asynchronous Services Interface (VASI)
vbsd0            Available   Virtual Block Storage Device (VBSD)
vhost0           Available   Virtual SCSI Server Adapter
vsa0             Available   LPAR Virtual Serial Adapter
As seen above the VIOS already has a Virtual device and Physical device for bridging. If there are no virtual devices, we can create one from HMC
If you are adding a new device use 'cfgmgr' to 'see' the new device
Note down the names of the adapters needed to bridging
Here we have
Physical: ent0 Virtual: ent2
make sure that the physical interface properties are proper (Ex. Duplex, speed etc...)
If any of the interface has IP configuration, use 'rmtcpip' to remove them

Get the current slot information

$ lsdev -slots
# Slot                       Description       Device(s)
U8233.E8B.1000A1P-V7-C0      Virtual I/O Slot  vsa0
U8233.E8B.1000A1P-V7-C11     Virtual I/O Slot  ent2
U8233.E8B.1000A1P-V7-C12     Virtual I/O Slot  vhost0
U8233.E8B.1000A1P-V7-C32769  Virtual I/O Slot  vasi0

Create SEA

$ mkvdev -sea ent0 -vadapter ent2 -defaultid 7 -default ent2                    
ent3 Available                                                                  
en3                                                                             
et3          

details
§  -sea -- the physical adapter on which to create SEA
§  -vadapter -- the virtual adapter on which to create SEA (can give multiple virtual adapters)
§  -default -- the vitual adapter to use as default adapter
§  -defaultid -- The PVID to use for the SEA. (PVID for the SEA)
The additional VID will be automatically added by VIO, based on the virtual adapters.

verify the virtual device

$ lsdev -virtual                                                                
name             status      description                                        
ent2             Available   Virtual I/O Ethernet Adapter (l-lan)               
vasi0            Available   Virtual Asynchronous Services Interface (VASI)     
vbsd0            Available   Virtual Block Storage Device (VBSD)                
vhost0           Available   Virtual SCSI Server Adapter                        
vsa0             Available   LPAR Virtual Serial Adapter                        
ent3             Available   Shared Ethernet Adapter                            
$ lsdev -type adapter
name             status      description
ent0             Available   2-Port 10/100/1000 Base-TX PCI-Express Adapter (14104003)
ent1             Available   2-Port 10/100/1000 Base-TX PCI-Express Adapter (14104003)
ent2             Available   Virtual I/O Ethernet Adapter (l-lan)
ent3             Available   Shared Ethernet Adapter
fcs0             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
fcs1             Available   8Gb PCI Express Dual Port FC Adapter (df1000f114108a03)
pager0           Available   Pager Kernel Extension
vasi0            Available   Virtual Asynchronous Services Interface (VASI)
vbsd0            Available   Virtual Block Storage Device (VBSD)
vhost0           Available   Virtual SCSI Server Adapter
vsa0             Available   LPAR Virtual Serial Adapter

Get attributes of the SEA

$ lsdev -dev ent3 -attr
attribute     value    description                                                        user_settable
 
accounting    disabled Enable per-client accounting of network statistics                 True
ctl_chan               Control Channel adapter for SEA failover                           True
gvrp          no       Enable GARP VLAN Registration Protocol (GVRP)                      True
ha_mode       disabled High Availability Mode                                             True
jumbo_frames  no       Enable Gigabit Ethernet Jumbo Frames                               True
large_receive no       Enable receive TCP segment aggregation                             True
largesend     0        Enable Hardware Transmit TCP Resegmentation                        True
netaddr       0        Address to ping                                                    True
pvid          7        PVID to use for the SEA device                                     True
pvid_adapter  ent2     Default virtual adapter to use for non-VLAN-tagged packets         True
qos_mode      disabled N/A                                                                True
real_adapter  ent0     Physical adapter associated with the SEA                           True
thread        1        Thread mode enabled (1) or disabled (0)                            True
virt_adapters ent2     List of virtual adapters associated with the SEA (comma separated) True

Assigin an IP to SEA adaper

This is not necessary. You can create a another virtual adapter on the same VLAN on the SEA's PVID or vid, then assign an IP to it
$ mktcpip -hostname sys414_vios7 -interface en3 \                               
> -inetaddr 10.6.133.142 -netmask 255.255.255.0 \                               
> -gateway 10.6.133.254                          

you can try and ping an ip within your network to verify connectivity

get routing table

# netstat -rn
Routing tables
Destination        Gateway           Flags   Refs     Use  If   Exp  Groups
 
Route Tree for Protocol Family 2 (Internet):
default            10.6.133.254      UG        1        61 en3      -      -
10.6.133.0         10.6.133.142      UHSb      0         0 en3      -      -   =>
10.6.133/24        10.6.133.142      U         2        29 en3      -      -
10.6.133.142       127.0.0.1         UGHS      0         2 lo0      -      -
10.6.133.255       10.6.133.142      UHSb      0         0 en3      -      -
127/8              127.0.0.1         U         2        77 lo0      -      -
 
Route Tree for Protocol Family 24 (Internet v6):
::1                ::1               UH        0        54 lo0      -      -

or use 'lstcpip -routtable' as padmin

Create an VSCSI disk in AIX VIO

VSCSI is required to map disk to client LPARs
VIOS will 'own' the physical resource. The VIOS will present an virtual resource (virtual target device) to the LPAR. This virtual device is backed by a physical device



We need a virtual SCSI adapter in VIOS and client LPAR for presenting a disk to client LPAR. This relationship is one-to-one. That is, for every LPAR, there must be 2 virtual SCSI adapters. Once in VIOS and one in client LPAR 

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