Re: a question about the definition on MIB view

["Jeffrey T. Johnson" <[e-mail]>]

FFA0 is the correct viewMask:

ifEntry OID is 1.3.6.1.2.1.2.2.1
ifEntry.0.2 is 1.3.6.1.2.1.2.2.1.0.2
with a mask of 1 1 1 1 1 1 1 1 1 0 1
zero extended  1 1 1 1 1 1 1 1 1 0 1 0 0 0 0 0
                  F       F       A       0

hope that helps
/jeff


[e-mail] wrote:
> 
> Dear Mistress or Mister:
>         I'm a graduadte student from China, When study
> your writings of RFC 1445, I meet a question I can't
> understand. It's in "4.3 MIB View Configurations Table8":
> 
> Context    Type        Family Name        Family Mask
> lucy       included    system             ''H
> lucy       included    { ifEntry 0 2 }    'FFA0'H
> lucy       excluded    { ifSpeed 2 }      ''H
> ricky      included    icmp               ''H
> ricky      included    { ifEntry 0 5 }    'FFA0'H
> ricky      included    { ifInOctets 4 }   ''H
>              Table 8: More Elaborate View Definitions
> 
> I have checked the ifEntry subtree, it's the tenth one.
> if I havn't missed your meaning of "{ifEntry 0 2}" in the
> second entry of Table 8, the 'ifEntry' should correspond
> to the mask bit '1', followed it, '0' means "wild card",so
> it should correspong to the mask bit '0', at last, '2' means
> the second interface and should correspond to the bit '1',
> that is, "101" should be the mask of "ifEntry 0 2".
> since the ifEntry is the tenth one from the root of the MIB,
> the mask for "{ifEntry 0 2}" should be "1111,1111,1101,0000"B
> or "FFD0"H, but not "FFA0"H. The same problem occurs in the
> fifth entry of Table 8.
> 
>         My question May be naive, or the problem is in my
> wrong understand about "Family Name" and "Family Mask",please
> point out the key for me, thank you.
> 
>                                 yours sincerely
>                                 kaler Wang
>                                 1996.12.26
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