[geeks] A U30 puzzle

[Nadine Miller]

On Jul 3, 2009, at 12:03 PM, Phil Stracchino wrote:

> Patrick Giagnocavo wrote:
>> You have a network problem.
>
> I figured that much, but I can't figure out what it is.  Trying to  
> gain
> more insight into that was why I added the gigabit adapter to minbar.
>
>
>> Check the link characteristics, /etc/hosts , etc.
>>
>> Disable IPv6.
>
> Not enabled in the first place.  /etc/hosts is fine (and almost empty)
> on both machines.
>
>> Check results of "dladm show-dev" .
>
> Hmm, good call.  Interesting:
>
> minbar:root:/home:130 # ifconfig -a
> lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu
> 8232 index 1
>        inet 127.0.0.1 netmask ff000000
> hme0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500  
> index 2
>        inet 10.24.32.12 netmask ffffff00 broadcast 10.24.32.255
>        ether 8:0:20:92:9e:46
> e1000g0: flags=201000851<UP,POINTOPOINT,RUNNING,MULTICAST,IPv4,CoS>  
> mtu
> 1500 index 3
>        inet 10.24.34.2 --> 10.24.34.1 netmask ffffffff
>        ether 8:0:20:92:9e:46
>
> And that hme0 is remotely pingable.  Yet...
>
> minbar:root:/home:131 # dladm show-dev
> hme0            link: unknown   speed: 100   Mbps       duplex: full
> e1000g0         link: up        speed: 1000  Mbps       duplex: full
>
> Curious and suspicious.
>
> minbar:root:/home:137 # dladm show-link
> hme0            type: legacy    mtu: 1500       device: hme0
> e1000g0         type: non-vlan  mtu: 1500       device: e1000g0
>
>
>> ndd /dev/tcp \?
>>
>> is IP forwarding on?
>
> minbar:root:/home:146 # svcs -a | grep forward
> disabled       11:07:54 svc:/network/ipv4-forwarding:default
> disabled       11:07:54 svc:/network/ipv6-forwarding:default

Are you patched up to current levels?  I'd check to see if there are  
any regressions from Solaris 10 release in your OS.  What about your  
cables?  Cat-5 or 6?  Length?  Known to be good?

There's a bug in netatalk, if you have that installed that can cause  
your network connection to drop (had that problem on mine) recompiled  
with the latest, which fixed it.

I've seen some weird stuff with Solaris and network adaptors.  I have  
one motherboard that is known good with an rge (Realtek 8111C) NIC  
that falls off the network for about 5 minutes at a time.  It works  
fine in both Mac OS X and Windows XP.  The problem is a known bug  
regression in Nevada, but I am running Solaris 10 release on the  
system.  I have the same chipset NIC in my NAS, no problems  
whatsoever.  I can only surmise it is a hardware chip revision level  
issue.

=Nadine=