Changing VLAN on AIX lpars in the same subnet Post: 302975832

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Operating Systems AIX Changing VLAN on AIX lpars in the same subnet Post 302975832 by kaelu26 on Sunday 19th of June 2016 09:32:39 PM

06-19-2016

Registered User

Quote:

Originally Posted by bakunin

What do you mean by that? Because the "PVID" (Physical Volume Identifier) has nothing to do with networks at all. Or is that completely unrelated to the rest of your question? In this case please create a new thread (or ask a moderator, we can split this thread into two for the separate questions).

I hope this helps.

bakunin

Sorry for the confusion there Bakunin. What I meant by the PVID is (Port VLAN ID) in the virtual ethernet adapter settings. But I know how this works now.

- K

---------- Post updated at 11:32 AM ---------- Previous update was at 11:26 AM ----------

Quote:

Originally Posted by agent.kgb

if you can bring your systems offline:

1. add VLAN 31 to the network switch ports.
2. configure a new virtual adapter for VLAN 31 on both of your VIOSes.
3. configure the virtual adapter into the existing SEA.
4. configure a new virtual adapter for VLAN 31 for all of your AIX LPARs.
5. check that it works (usually it is enough to get it up with ifconfig and look at traffic with tcpdump, even without an IP address).
6. on day X, when you have downtime, remove your old virtual adapters with VLAN 30 from the AIX LPARs and configure IP addresses on the new virtual adapters.
7. if everything works ok, remove virtual adapter with VLAN 30 from SEA and from all VIOSes.
8. remove VLAN 30 from the network switch ports.

Thanks agent.kgb. This seems like a good plan. I will try this and see how it goes.

- Kaelu

kaelu26

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LEARN ABOUT DEBIAN

vconfig

VCONFIG(8)						      System Manager's Manual							VCONFIG(8)

NAME

       vconfig - VLAN (802.1q) configuration program.

SYNOPSIS

       vconfig [lots of long options]

DESCRIPTION

       The  vconfig program allows you to create and remove vlan-devices on a vlan enabled kernel. Vlan-devices are virtual ethernet devices which
       represents the virtual lans on the physical lan.

OPTIONS

       add [interface-name] [vlan-id]
	      Creates a vlan-device on [interface-name]. The resulting vlan-device will be called according to the nameing convention set.

       rem [vlan-device]
	      Removes the named vlan-device.

       set_flag [vlan-device] 0 | 1
	      When 1 (the default since 2.6.18), ethernet header reorders are turned on.  Dumping the device will  appear  as  a  common  ethernet
	      device  without  vlans.  When  0	however, ethernet headers are not reordered, which results in vlan tagged packets when dumping the
	      device. Usually the default gives no problems, but some packet filtering programs might have problems with it.

       set_egress_map [vlan-device] [skb-priority] [vlan-qos]
	      This flags that outbound packets with a particular skb-priority should be tagged with the particular  vlan  priority  vlan-qos.  The
	      default vlan priority is 0.

       set_ingress_map [vlan-device] [skb-priority] [vlan-qos]
	      This  flags  that  inbound  packets  with the particular vlan priority vlan-qos should be queued with a particular skb-priority. The
	      default skb-priority is 0.

       set_name_type VLAN_PLUS_VID | VLAN_PLUS_VID_NO_PAD | DEV_PLUS_VID | DEV_PLUS_VID_NO_PAD
	      Sets the way vlan-device names are created. Use vconfig without arguments to see the different formats.

       NOTES  VLAN will use Broadcom's NICE interface when the network device supports it. This is necessary, since usually the hardware of  these
	      devices  already	removes the vlan tag from the ethernet packet. The set_flag option on vlan-devices created on such a physical net-
	      work device will be ignored.  Dumping the network-device will show only untagged(non-vlan) traffic,  and	dumping  the  vlan-devices
	      will only show traffic intended for that vlan, without the tags.

FILES

       /proc/net/vlan/config
       /proc/net/vlan/[vlan-device]

SEE ALSO

       ip(8), ifconfig(8)

AUTHORS

       This manual page was written by Ard van Breemen <ard@kwaak.net>
       The vlan patch is written by Ben Greear <greearb@candelatech.com>

																	VCONFIG(8)