[c-nsp] Something I was thinking about whilst idle the otherday.

[Tim Durack]

Except when wildcards aren't quite wildcards:

b-rtr-1(config-router)#network 10.0.0.0 ?
  A.B.C.D  OSPF wild card bits
b-rtr-1(config-router)#network 10.0.0.0 0.255.1.255 area 0
OSPF: Invalid address/mask combination (discontiguous mask)

That one threw me for a minute...

Tim:>

2008/3/21 Tassos Chatzithomaoglou <achatz at forthnet.gr>:
> Wildcards provide greater functionality with acls (possibly in rare cases), as it's mot mandatory to follow strict subnetting
>  rules like in network masks.
>
>  --
>  Tassos
>
>  Scott Granados wrote on 21/3/2008 5:07 πμ:
>
>
> > Right or at least be consistent, use masks or wild card bits but not both.
>  > I remember someone discussing the hardware reasons for this but still.:)
>  >
>  >
>  > ----- Original Message -----
>  > From: "Whisper" <whisper555 at gmail.com>
>  > To: "Wink" <dwinkworth at wi.rr.com>
>  > Cc: <cisco-nsp at puck.nether.net>
>  > Sent: Thursday, March 20, 2008 7:45 PM
>  > Subject: Re: [c-nsp] Something I was thinking about whilst idle the
>  > otherday.
>  >
>  >
>  >> cidr notation for inputting ip addresses for all platforms
>  >>
>  >> 192.168.0.1/24
>  >>
>  >> On Fri, Mar 21, 2008 at 9:42 AM, Wink <dwinkworth at wi.rr.com> wrote:
>  >>
>  >>> I think he means across all platforms the MAC address should be
>  >>> formatted the same.
>  >>>
>  >>> More generally, I wish IOS was more consistent.  Such as the use "mask"
>  >>> or "netmask" in various places.
>  >>>
>  >>> I also wish that the new features weren't always released in a
>  >>> "half-way" fashion.  So "yay!" Cisco can do xyz, but only with numbered
>  >>> ACLs, or the feature can only be bound to a loopback, or VRFs are not
>  >>> supported.  Until 10 releases later.
>  >>>
>  >>> All that being said, Cisco has the richest feature set there is, so
>  >>> obviously getting everything integrated with all the other features
>  >>> probably takes a long time.
>  >>>
>  >>> Sridhar Ayengar wrote:
>  >>>> Wyatt Mattias Ishmael Jovial Gyllenvarg wrote:
>  >>>>
>  >>>>> How about mac addresses are always in the same format and always lower
>  >>> case?
>  >>>>> That one is enough too make me fart blood!
>  >>>>>
>  >>>> So what exactly is the problem with that?  It's a hexadecimal number.
>  >>>>
>  >>>> Any random pile of text you could come up with could just be
>  >>>> represented
>  >>>> by a much longer hexadecimal number.
>  >>>>
>  >>>> Peace...  Sridhar
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