Re: [STDS-802-16] [NETMAN] What is "BS Sector Mac Address" role
Krzysztof hi,
1. The BS MAC address is the same as the "BS ID" that appears in the
DCD. The SS uses it to (insecurely) select the BS to which it wants
to attach.
2. In 802.16e, the security sublayer enables the SS to authenticate
the BS by its MAC Address/BSId that is additionally contained in the
BS's x509 certificate.
3. The D2 MIB has BSId fields defined in the OFDM and OFDMA Downlink
Channel tables - these don't seem to make sense and should be
deleted. BSId / MAC Address should be contained in ifPhysAddr as you
say.
BRs,
Jeff Mandin
Streetwaves Networking
Krzysztof Dudzinski wrote:
>Hi All,
>
>
>
>As described "802.16_2004_TGF.pdf, draft2, section 9.3.2.2" we decided
>to manage wireless man "BS Sectors" as network interface. As such there
>is one row defined in the interface table (ifTable) per "BS Sector"
>along with required attributes e.g. ifType (propBWAp2Mp), IfPhysAddress
>(Mac Address of BS Sector) etc.
>
>Two questions arise:
>
>
>
>1. Can anybody think of the scenario where the Mac Address of "BS
>Sector" would be actually used?
>
>2. Can the ifPhysAddress be filled with zero length octet string as
>suggest the description of this object in the IF-MIB (see extract below)
>if standard doesn't define the use of it?
>
>
>
>Unlike SS Mac Address the Mac Address of BS (Sector) is not defined in
>the standard 802.16-2004 at all. The BS Mac Address is mentioned in the
>802.16e/D5a in the context of Neighbor advertisement message. But in
>this context it is not sure what Mac Address the document refers to
>(what type of interface in the interface table).
>
>Nevertheless the issue is with 802.16f MIB, which is designed for fixed
>operation.
>
>
>
>Extract form IF-MIB:
>
>"
>
>ifPhysAddress OBJECT-TYPE
>
> SYNTAX PhysAddress
>
> MAX-ACCESS read-only
>
> STATUS current
>
> DESCRIPTION
>
> "The interface's address at its protocol sub-layer. For
>
> example, for an 802.x interface, this object normally
>
> contains a MAC address. The interface's media-specific MIB
>
> must define the bit and byte ordering and the format of the
>
> value of this object. For interfaces which do not have such
>
> an address (e.g., a serial line), this object should contain
>
> an octet string of zero length."
>
> ::= { ifEntry 6 }
>
>"
>
>Regards,
>
>Krzysztof Dudzinski
>
>Airspan Networks
>
>
>
>
>
>