Re: excessive inbound/outbount discards with all my VPARs showing in lanadmin (86 Views)
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Super Advisor
Yaboto
Posts: 451
Registered: ‎02-07-2007
Message 1 of 5 (133 Views)

excessive inbound/outbount discards with all my VPARs showing in lanadmin

[ Edited ]

Hi,

 

Here is a sample from one of the VPAR:

 

 

[root@erp1]/#lanadmin -g 0

 

                      LAN INTERFACE STATUS DISPLAY

                       Mon, Jul 21,2014  12:38:25

 

PPA Number                      = 0

Description                     = lan0 HP PCI AVIO LAN Release B.11.31.1403

Type (value)                    = ethernet-csmacd(6)

MTU Size                        = 1500

Speed                           = 10000000000

Station Address                 = 0xde282d348b55

Administration Status (value)   = up(1)

Operation Status (value)        = up(1)

Last Change                     = 78

Inbound Octets                  = 2904109

Inbound Unicast Packets         = 2159

Inbound Non-Unicast Packets     = 26081

Inbound Discards                = 4362

Inbound Errors                  = 0

Inbound Unknown Protocols       = 7433

Outbound Octets                 = 168377

Outbound Unicast Packets        = 2265

Outbound Non-Unicast Packets    = 3

Outbound Discards               = 0

Outbound Errors                 = 0

Outbound Queue Length           = 4

Specific                        = 655367

 

Ethernet-like Statistics Group

 

Index                           = 1

Alignment Errors                = 0

FCS Errors                      = 0

Single Collision Frames         = 0

Multiple Collision Frames       = 0

Deferred Transmissions          = 0

Late Collisions                 = 0

Excessive Collisions            = 0

Internal MAC Transmit Errors    = 0

Carrier Sense Errors            = 0

Frames Too Long                 = 0

Internal MAC Receive Errors     = 0

 

[root@erp1/#

 

Platform is BL890 i4C; 10GB Virtual Connect; HP-UX 11.31; VPAR 6.3 ...

 

Please what should i do to resolve this issue?

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Super Advisor
Yaboto
Posts: 451
Registered: ‎02-07-2007
Message 2 of 5 (100 Views)

Re: excessive inbound/outbount discards with all my VPARs showing in lanadmin

Pls HELP...
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HP Pro
Dave Olker
Posts: 1,424
Registered: ‎10-10-2002
Message 3 of 5 (91 Views)

Re: excessive inbound/outbount discards with all my VPARs showing in lanadmin

In most cases this is expected behavior.  

 

Typically what we see when different HP support tools are used shows the inbound discards are because the VM/vPar virtual NIC is receiving multicast packets.  These packets are discarded because the guest has no multicast listener program subscribing to the Mulitcast "channel", that would read the packets.  This is a normal condition on any network, Virtualized, or not.

 

Dave

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Super Advisor
Yaboto
Posts: 451
Registered: ‎02-07-2007
Message 4 of 5 (88 Views)

Re: excessive inbound/outbount discards with all my VPARs showing in lanadmin

Thanks Dave,

 

I understand your clarification, but in my case all the npars (physical hardware) are showing 0 (zero) for inbound/outbound discards while all the vpars are showing extremely high values above 100,000.

 

How could i justify to the customer that this is a normal occurrence?

 

Best regards,

Yaboto

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HP Pro
Dave Olker
Posts: 1,424
Registered: ‎10-10-2002
Message 5 of 5 (86 Views)

Re: excessive inbound/outbount discards with all my VPARs showing in lanadmin

Open a support case with HP and ask for the "lanshow" command. That command will break down the discards into buckets and show very clearly why the discards are happening. In most cases the reason is "multicast discards". If that is the case then I would assume the nPar is either not receiving these packets or it has a process consuming them where the vPar does not.

Dave
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