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HP-UX 11.11 APA - MAC Flapping Issue

sysad1_1
Advisor

HP-UX 11.11 APA - MAC Flapping Issue

Hi Guru's,

I recently setup an APA for my HP-UX 11.11 machine. However, our network guys has detected that there's a MAC flapping that is occurring.

Is there any setting in APA to disable this MAC flapping issue?


TIA
5 REPLIES
Manix
Honored Contributor

Re: HP-UX 11.11 APA - MAC Flapping Issue

Hello Sysadm !!


Is the LAN card & switch auto negotiating
with each other in speed & mode.

Hope the APA configuration is as per the switch topology.

# lanadmin -x 0
Speed = 100 Full-Duplex.
Autonegotiation = On.

Thanks

Manix
HP-UX been always lovable - Mani Kalra
sysad1_1
Advisor

Re: HP-UX 11.11 APA - MAC Flapping Issue

this is somewhat weird, i already tested the APA by physically removing the cables and it worked.

but how come my lanadmin shows that there is no link?

lanadmin -x 0
Current Config = NO LINK AUTONEG

Manix
Honored Contributor

Re: HP-UX 11.11 APA - MAC Flapping Issue

You may run the following commands as well to check the Aggregate characteristics

echo "lan ppa 900 display quit" |lanadmin

# lanscan -q
0
1
4
5
2
3
900
HP-UX been always lovable - Mani Kalra
sysad1_1
Advisor

Re: HP-UX 11.11 APA - MAC Flapping Issue

Hi,


Here's the output of the command

# lanscan -q
0
3
4
5
2
7
8
9
900 1 6
901
902
903
904


===


# echo "lan ppa 900 display quit" | lanadmin


LOCAL AREA NETWORK ONLINE ADMINISTRATION, Version 1.0
Thu, Jan 13,2011 07:50:34

Copyright 1994 Hewlett Packard Company.
All rights are reserved.



LAN INTERFACE STATUS DISPLAY
Thu, Jan 13,2011 07:50:34

PPA Number = 900
Description = lan900 Hewlett-Packard LinkAggregate Interface
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 2000000000
Station Address = 0x12799e692a
Administration Status (value) = up(1)
Operation Status (value) = up(1)
Last Change = 21476841
Inbound Octets = 4213165772
Inbound Unicast Packets = 3122590589
Inbound Non-Unicast Packets = 2521063
Inbound Discards = 39574
Inbound Errors = 0
Inbound Unknown Protocols = 46
Outbound Octets = 3081624074
Outbound Unicast Packets = 3460004285
Outbound Non-Unicast Packets = 11316
Outbound Discards = 0
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 0

LAN Interface test mode. LAN Interface PPA Number = 900



skt_skt
Honored Contributor

Re: HP-UX 11.11 APA - MAC Flapping Issue

Did u find the cause of this? Also do you know why "Inbound Discards = 39574" reporting??