Thank you! It's the Rosetta Stone for Sun Ray. :-)
Seriously, you guys rule.
-tom
>>>>> On Wed, 21 Mar 2007 19:20:38 -0700, ottomeister <[EMAIL PROTECTED]> said:
> On 3/21/07, Thomas L Baca <[EMAIL PROTECTED]> wrote:
>> This brings forward the general question of what are the semantics of
>> -a, -A, and -L. From the docs, the simple rule is to use -a for
>> "dedicated interconnect" and -A for "shared network". The manual says
>> that -A also turns on the "LAN connection" a la -L.
> '-a <interface>' tells SRSS that the subnet attached to that interface
> is an "interconnect", a subnet that is dedicated to carrying Sun Ray
> traffic and that has no connectivity to any other subnets. When you
> set up an interconnect 'utadm' knows that the Sun Rays will need to
> be told to contact the server at its IP address on the interconnect, so
> that's how 'utadm' sets up the DHCP parameters for this subnet. The
> fact that this subnet is an interconnect is remembered; it's a factor
> when this server tries to decide whether to offer sessions to Sun Ray
> units, and it's important if this server ever needs to redirect DTUs on
> the interconnect to other servers on the interconnect.
> '-L on' tells SRSS that it's OK for this server to offer sessions to Sun
> Ray units that connect from subnets that are not dedicated
> interconnects. By default SRSS will offer sessions only to units
> that connect from subnets that have been declared (by 'utadm -a')
> to be interconnects.
> '-A <subnet>' tells SRSS that you want to set up DHCP on this
> server to deliver parameters to the given subnet, and possibly to
> issue IP address leases to the given subnet. '-A' tells SRSS that
> even though you want DHCP to do something for this subnet, the
> subnet is not an interconnect -- it's just another subnet on a
> fully-connected internet. . '-A' therefore implies that you want this
> server to offer sessions to Sun Ray units on non-interconnect
> subnets, so in addition to setting up DHCP it automatically does
> the equivalent of '-L on' for you.
>> In our facility, we have multiple class C IP subnets running on the
>> same VLAN (we have no direct control of VLAN configs - that's campus
>> networking) and are starting to have DTUs and servers on various of
>> the IP subnets (but on the same LAN!). I believe this circumstance is
>> causing some of our confusion as it may not be common in Sun Ray
>> deployments.
> If you have no interconnects then you won't use '-a' at all. Your
> Sun Rays are on your internet so you'd use '-A' for each subnet
> where you wanted the Sun Ray server to offer some degree of
> DHCP service to the subnet. If you didn't want the server to
> provide DHCP service to any subnets then you'd just run '-L on'
> once.
>> Also, this all ties in to the various status flags in the utgstatus
>> output... How do the T N U A M flags relate to those utadm configs?
> -a/-A/-L do not affect T or N.
> T and N are per-host flags. T is "Trusted", which means that that
> server has demonstrated that it belongs to the same Sun Ray host
> group as the server you ran 'utgstatus' against. 'N' is "oNline" which
> means that the server may bid to provide a new session when one
> needs to be created within its group. (That's controlled by 'utadm -n'
> and 'utadm -f'.)
> U, A and M are per-subnet flags. U (for Up) means that this server
> has recently received Sun Ray group membership announcements
> from that server over that subnet. A (for Active) means that that
> server is willing to offer sessions to Sun Ray units that connect to it
> over that subnet. (So, for instance, a server that is offering sessions
> only to interconnects will not advertise A on its non-interconnect
> subnets, and other servers should not automatically redirect units
> to that server's address on those non-A subnets.) M means that
> that server considers that subnet to be an interconnect. (M is for
> Managed. We could have used I for interconnect but with some
> fonts I looks like l or 1 so we went with M. D for Dedicated was
> another possibility but we worried that people might mistake it for
> Down.)
> So '-a' causes M and causes A on M subnets. '-A' and '-L on'
> cause A on non-M subnets.
> U isn't tied to any options, it's produced entirely by packet
> reception.
> OttoM.
> __
> ottomeister
> Disclaimer: These are my opinions. I do not speak for my employer.
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