I don’t deploy any servers which are connected to a monitoring
system that calls me at night or calls my manager without fault-tolerant NIC
teaming. Inevitably it will be my fault when the network team crashes a
supervisor in a 6509 or a line card dies. I have no second thoughts about using
a $250 switchport as a failover port. Some shops I’ve found the network guys
expect this from my part so it’s not their problem when a NIC dies or a cable
gets screwed up or whatever. Conversely I’ve dealt with network teams and
systems people who haven’t the faintest clue how teaming works and go ballistic
when they hear it. It won’t cause spanning tree issues (most popular network
team myth I’ve heard), it doesn’t require setting up an etherchannel (you can’t
have an etherchannel span switches), and it doesn’t require four IOS commands
and three TAC calls to make it work. It also doesn’t crash switches, create
broadcast loops, flood segments, etc.
I’ve deployed thousands of network connections with HPQ,
Broadcom, and Intel teaming software and have not had issues yet. On clusters I
always team across the onboard and PCI NIC for the redundancy. DCs and other
stuff without a PCI NIC I just team the two ports for switch fault tolerance.
This is also an easy way to see if your network people didn’t follow directions
on the cross connects – if the team negotiates a 200mbps or 2gbps connection,
they’re on the same switch, and quite likely the same line card
Thanks,
Brian Desmond
[EMAIL PROTECTED]
c - 312.731.3132
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Al Mulnick
Sent: Wednesday, July 12, 2006 8:29 PM
To: [email protected]
Subject: Re: [ActiveDir] Multihomed Domain Controllers
I've not had good luck with teaming and I've yet to see much
benefit. Saying that, I can see where teaming in a failover method might
have some benefits for other types of servers. Due to the way AD is
deployed (fabric vs. cluster or single instance) I see no point in making
anything complex when it comes to a domain controller. I view teaming as
one more piece of software to configure (and potentially mess up) and one more
thing in my troubleshooting list if something goes amiss.
On 7/12/06, Freddy HARTONO
<[EMAIL PROTECTED]>
wrote:
Don't mean to hijack this thread but on a similar note -
whats the
downside for installing DCs with Adapter Teaming?
All I know is that when adapter teaming is enabled, setting up WINS
service will pops and error message (which can be ignored)...but
anything else? I've always been a firm believer of one nic and no
teaming...
Any comments?
Thank you and have a splendid day!
Kind Regards,
Freddy Hartono
Group Support Engineer
InternationalSOS Pte Ltd
mail: [EMAIL PROTECTED]
phone: (+65) 6330-9785
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:
[EMAIL PROTECTED]] On Behalf Of Susan Bradley,
CPA aka Ebitz - SBS Rocks [MVP]
Sent: Wednesday, July 12, 2006 11:41 PM
To: [email protected]
Subject: Re: [ActiveDir] Multihomed Domain Controllers
In the year 2006.. I hope we are still not making host file entries on
servers and workstations.... :-)
Peter Johnson wrote:
> You might want to then create entries in the host file on the backup
> server so that you guarantee that the backup server always uses the
> right network connection.
>
>
>
> ----------------------------------------------------------------------
> --
>
> *From:* [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
] *On Behalf Of *Robert
> Rutherford
> *Sent:* 12 July 2006 12:57
> *To:* [email protected]
> *Subject:* RE: [ActiveDir] Multihomed Domain Controllers
>
>
>
> No issues, if you...
>
>
>
> Go to the TCP/IP settings of the backup network card, click advanced,
> goto the DNS tab and untick register the connection in DNS.
>
>
>
> Cheers,
>
>
>
> Rob
>
>
>
>
>
>
>
>
>
> *Robert Rutherford*
> *QuoStar Solutions Limited*
>
>
> The Enterprise Pavilion
> Fern Barrow
> Wallisdown
> Poole
> Dorset
> BH12 5HH
>
>
>
>
>
>
>
>
> *T:*
>
>
>
> +44 (0) 8456 440 331
>
> *F:*
>
>
>
> +44 (0) 8456 440 332
>
> *M:*
>
>
>
> +44 (0) 7974 249 494
>
> *E: *
>
>
>
> [EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
>
> *W: *
>
>
>
> www.quostar.com <http://www.quostar.com>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> ----------------------------------------------------------------------
> --
>
>
>
>
>
> **From:** [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]
] *On Behalf Of *Jeff Green
> *Sent:* 12 July 2006 11:43
> *To:* [email protected]
> *Subject:* [ActiveDir] Multihomed Domain Controllers
>
> Hi,
>
> First posting to this list but I've
lurked quite a while and I've
> been very impressed by the quality of replies by the gurus.
>
> My question is regarding the advisability of having multihomed DCs.
> Basically I want
> to run backups over a separate GbE and as my servers have dual inbuilt
> NICs this seems an obvious route to take. I know there are some issues
> with DNS (I have a DNS integrated AD).
>
> Would this cause replication problems, etc ?
>
> Any other "gotchas" ?
>
>
>
>
Many Thanks,
>
> ---
> Jeff Green
> Network Support Manager
> SAPIENS (UK) Ltd
> t: +44 (0)1895 464228 f: +44 (0)1895 463098
>
> "I dream of hover cars and old transistor radios ... She dreams of
> flowers in a field of sunny bungalows"
>
>
> ----------------------------------------------------------------------
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> document(s) attached are for the exclusive use of the addressee and
> may contain confidential, privileged and non-disclosable information.
> If the recipient of this email is not the addressee, such recipient is
> strictly prohibited from reading, photocopying, distribution or
> otherwise using this email or its contents in any way.
>
> Please notify the Sapiens (UK) Ltd. Systems Administrator via e-mail
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, if you have received this
> email in error.
>
> Disclaimer: The views, opinions and guidelines contained in this
> confidential e-mail are those of the originating author and may not be
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>
--
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