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Operating Systems AIX LPAR missing virtual interface Post 303027800 by max on Tuesday 25th of December 2018 12:29:45 AM
Old 12-25-2018
Hello Neo
Thanks for the quick response.


ifconfig for both machines is exactly the same other than of course the ip change. Here is one of the two


Code:
working::/ # ifconfig -a
en1: flags=1e084863,480<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,CHECKSUM_OFFLOAD(ACTIVE),CHAIN>
        inet xx.xx.xx.xx netmask 0xfffffc00 broadcast 10.0.227.255
         tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1
lo0: flags=e08084b,c0<UP,BROADCAST,LOOPBACK,RUNNING,SIMPLEX,MULTICAST,GROUPRT,64BIT,LARGESEND,CHAIN>
        inet 127.0.0.1 netmask 0xff000000 broadcast xx.xx.xx.xx
        inet6 ::1%1/0
          tcp_sendspace 131072 tcp_recvspace 131072 rfc1323 1


I guess my first question is when is an interface of type VLAN created for a LPAR; 'ent1' in my case? Since en1 and ent1 is missing on the new lpar I'm just trying to figure out what it means and when it gets created.

Just to be clear both LPARs have same virtual adapter configurations and hence I was expecting the same number of interfaces being visible in lsdev output.

Code:
bash-4.4# lsdev | grep ^en
en0        Defined         Standard Ethernet Network Interface
 en1        Available       Standard Ethernet Network Interface
ent0       Available       Virtual I/O Ethernet Adapter (l-lan)
ent1       Available       VLAN



Code:
bash-4.4# lsdev -C -H -S a -F 'name class subclass type'
name       class     subclass  type
en1        if        EN        en
ent1       adapter   vlan      eth
<--more rows truncated -->


Last edited by max; 12-27-2018 at 03:10 PM..
 

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FIPVLAN(8)							  Open-FCoE Tools							FIPVLAN(8)

NAME
fipvlan - Fibre Channel over Ethernet VLAN Discovery SYNOPSIS
fipvlan [-c|--create] [-s|--start] interfaces fipvlan -a|--auto [-c|--create] [-d|--debug] [-s|--start] [-l|--link-retry <num>] fipvlan -h|--help fipvlan -v|--version DESCRIPTION
The fipvlan command performs Fibre Channel over Ethernet (FCoE) Initialization Protocol (FIP) VLAN Discovery over Ethernet interfaces. fipvlan can be used as a diagnostic tool to determine which VLANs have FCoE services available on a network, prior to configuring VLAN interfaces and the Open-FCoE initiator. fipvlan can also be used to create VLAN interfaces as they are discovered, and to start the Open-FCoE initiator. The --create and --start options are primarily intended to be used as part of an Open-FCoE boot solution. FCoE instances started in this way cannot be destroyed or reset by fcoeadm. fipvlan takes a list of network interface names to run the VLAN discovery protocol over, or the --auto option to use all available Ethernet interfaces. fipvlan will enable any interface which is found to be not enabled by the time the program runs. If no response is received on that interface it will be shutdown again when fipvlan terminates. OPTIONS
-a, --auto Use all Ethernet interfaces currently available -c, --create Create network interfaces for discovered FCoE VLANs. If a VLAN device already exists for a discovered VLAN, a new VLAN device will not be created. -d, --debug Enable debugging output -s, --start Start the Open-FCoE initiator on discovered FCoE VLANs -f, --suffix <suffix string> Append the specified string <suffix string> to VLAN interface names. -l, --link-retry <number of retries> Retry check for link up up to <number of retries> times. The link state is retried every 500 ms. The default is 20. -h, --help Display a help message with basic usage instructions -v, --version Display the fipvlan version string VLAN NAMING CONVENTIONS
The default VLAN device name is dev.vlan; where dev is the name of the Ethernet parent device and vlan is the discovered VLAN ID number. An optional suffix can be appended to this with -f commandline option. EXAMPLES
Display all discoverable VLANs with FCoE services fipvlan --auto Discover FCoE VLANs on interface eth2, create VLAN devices and start the Open-FCoE initiator fipvlan --create --start eth2 In this example if FCoE services were available on VLAN 101 of network interface eth2, then a VLAN interface eth2.101-fcoe would be created and used as the parent device for the initiator. SEE ALSO
fcoeadm(8) fcoemon(8) SUPPORT
fipvlan is part of the fcoe-utils package, maintained through the Open-FCoE project. Resources for both developers and users can be found at the Open-FCoE website http://open-fcoe.org/ Open-FCoE 10/06/2011 FIPVLAN(8)
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