Autonegotiation fail with Gigabit

[Jimmy_13]

HI,

I have a Superdome 32 way with HP A6847-60101 PCI 1000Base-SX Adapter and a switch Cisco 3508G-XL.

Both work well, but the networking guys wolud like to turn off the autonegotiation. Whe the autonegotiation is off in both devices, the link fall.

One of two need is with autonegotiation on for the link work.

which it could be the problem?
Thanks

[Michael Steele_2]

Ask the network guys what speed and duplex. Verify speed to be 1000. Refer to lanadmin to change your NIC's speed and duplex and lanscan to find the NMID / PPA number.

# lanscan (* write down NMID / PPA *)

This will list current speed and duplex:

# lanadmin -x 4 (* 4 = NMID *)

This will change :

# lanadmin -X 1000FD 4

1000 = speed
FD = Full duplex

[Pete Randall]

Jimmy,

Gigabit cards can not be manually set - they must be allowed to auto-netgotiate.


Pete

[Alzhy]

Same here..

Our experence with CISCO's and 1000-SX cars is that both link partners should always be set to "auto-negotiate"

[Steven E. Protter]

Tell the networking guys to find something else to do.

It is very clear in the documentation for each and every 1000 BaseT card HP certifies for its HP-9000 servers. Autonegotiate on the switch and the software settings for the card.

No exceptions.

!00 BaseT cards are better off with manual settings, hard coded into /etc/rc.config.d/hpbtlanconf

SEP

[Stefan Farrelly]

Weve had similar problems - you simply have to leave HP Gigabit cards with Autonegotiation set to ON, and same at switch end. You cannot switch it off, not matter what you do, weve tried.

[Geoff Wild]

We went through the same thing here when we switched from FDDI to Gigabit Ethernet - all ports on the Cisco which are used by 1000 SX cards have to be set to auto-negotiate.

Rgds...Geoff

[Michael Steele_2]

Thanks Guys!

Didn't know that.