Verify Shared Ethernet Adapter Configuration and Status

How can I determine the shape and status of my Shared Ethernet Adapters ? update or boot of the VIO server may cause some client partition ‘s network to hang temporarily .

Answer

Some VIO servers may have multiple Shared Ethernet Adapters ( SEAs ). If one or more are in the PRIMARY state rather of the BACKUP state of matter, the network communications for the SEA in PRIMARY submit may be affected temporarily during a system update or boot. The state of the SEA can be easily determined with these steps :

1. Login to padmin
2. exchange to root prompt :
$ oem_setup_env
3. List the adapters :
# lsdev -Cc adapter
4. Find the Shared Ethernet Adapters

    ent24 Available Shared Ethernet Adapter
    ent25 Available Shared Ethernet Adapter
    ent26 Available Shared Ethernet Adapter
    ent27 Available Shared Ethernet Adapter

5. Use the entstat command to list the components of the SEA:
5. Use the entstat dominate to list the components of the SEA :

# entstat -d ent24 |more
Note : For IBM inner ; This information can be found in the ./tcpip/tcpip.snap
Note : For IBM internal ; The command channel searches are in “ ( ) ”
6. Use the search or “ / ” to look for the be parameters or research page by page with the space-bar. Searches from the command occupation are case sensitive .

Statistics for adapters in the Shared Ethernet Adapter ent24
————————————————————–
Number of adapters: 2

VLAN Ids : (# entstat -d ent24 |grep -i vlan)
ent18: 174

High Availability Statistics: (# entstat -d ent24 |grep -i pvid)
Control Channel PVID: 94


State: BACKUP (# entstat -d ent24 |grep -i state)
… … … state : BACKUP ( # entstat -d ent24 |grep -i country ) …

High Availability Mode: Auto (# entstat -d ent24 |grep -i priority)
Priority: 2


Real Adapter: ent12 (# entstat -d ent24 |grep -i real)

ETHERNET STATISTICS (ent12) :
Device Type: EtherChannel

Statistics for every adapter in the EtherChannel:
————————————————-

Number of adapters: 2
Operating mode: Standard mode

ETHERNET STATISTICS (ent4) :
Device Type: 4-Port 10/100/1000 Base-TX PCI-X Adapter (14101103)

Link Status: Up (# entstat -d ent24 |grep -i link)

(# entstat -d ent24 |grep -i media)
Media Speed Selected: Auto negotiation
Media Speed Running: 1000 Mbps Full Duplex

ETHERNET STATISTICS (ent8) :
Device Type: 4-Port 10/100/1000 Base-TX PCI-X Adapter (14101103)

Link Status: Up (# entstat -d ent24 |grep -i link)

(# entstat -d ent24 |grep -i media)
Media Speed Selected: Auto negotiation
Media Speed Running: 1000 Mbps Full Duplex

Virtual Adapter: ent18

ETHERNET STATISTICS (ent18) :
Device Type: Virtual I/O Ethernet Adapter (l-lan )

Trunk Adapter: True (# entstat -d ent24 |grep -i trunk)
Priority: 2 Active: False (# entstat -d ent24 |grep -i priority)


PVID: 174 VIDs: None (# entstat -d ent24 |grep -i pvid)

Note: The defaultid value of the SEA should be the Port VLAN ID (PVID) of the default trunk adapter if there are more than one trunk adapters configured in the SEA.

Control Adapter: ent22

ETHERNET STATISTICS (ent22) :
Device Type: Virtual I/O Ethernet Adapter (l-lan)


Trunk Adapter: False (# entstat -d ent24 |grep -i trunk)

PVID: 94 VIDs: None (# entstat -d ent24 |grep -i pvid)

7. Then repeat for the other SEAs.

8. If any of the SEAs are in PRIMARY state, it is recommended to failover to BACKUP state prior to performing any maintenance or reboot of the VIO server or the connectivity of the client partitions that are using the SEA in PRIMARY state may lose connectivity temporarily.

9. Set ha_mode to standby on primary VIOS with chdev command:

    # chdev -l entX -a ha_mode=standby

        or

    $ chdev -dev entX -attr ha_mode=standby

10. Reset it back to auto and the SEA should fail back to the primary VIOS:

    # chdev -l entX -a ha_mode=auto

        or

    $ chdev -dev entX -attr ha_mode=auto

… actual arranger : ent12 ( # entstat -d ent24 |grep -i real ) … … … … … … … … … PVID : 174 VIDs : none ( # entstat -d ent24 |grep -i pvid ) : The defaultid value of the SEA should be the Port VLAN ID ( PVID ) of the default proboscis adapter if there are more than one luggage compartment adapters configured in the SEA … … .Trunk adapter : False ( # entstat -d ent24 |grep -i proboscis ) … PVID : 94 VIDs : none ( # entstat -d ent24 |grep -i pvid ) … 7. then recur for the early SEAs.8. If any of the SEAs are in PRIMARY state, it is recommended to failover to BACKUP department of state anterior to performing any alimony or boot of the VIO server or the connectivity of the node partitions that are using the SEA in PRIMARY express may lose connectivity temporarily.9. Set ha_mode to standby on primary VIOS with chdev command:10. Reset it back to car and the SEA should fail back to the primary VIOS :

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Category : Tech

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