From: James.Jackson@broadwing.com
Date: Mon Jun 23 2003 - 13:26:47 GMT-3
It doesn't seem like much more than that...i.e. forcing the UDP broadcasts
to be forwarded down the spanning-tree and choosing the other router as
outbound gateway via IRDP. If you want to also route, I'd imagine you want
to run IRB.
-----Original Message-----
From: wing_lam@jossynergy.com [mailto:wing_lam@jossynergy.com]
Sent: Monday, June 23, 2003 11:03 AM
To: Jonathan V Hays
Cc: ccielab@groupstudy.com
Subject: RE: UDP flooding
Hi Johnathan,
Thx, I think the broadcast MAC will be with all 1's but I have no idea on
the OUI type with all ones, even after I searched the following link:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1824/products_command_refe
rence_chapter09186a008008065d.html
So I guess the example is wrong, and if it's my fault please let me know.
But I still don't know how the "UDP flooding" works. In my perception, it
means "UDP broadcast packets passing hope by hope with the destination
broadcast address changes accordingly in each hope, and the spanning tree
will deal with the forwarding and blocking; while other normal user
traffics will still through unicast routing"
Am I right, anybody please correct me; I am still not very clear in how the
spanning-tree part of the "UDP flooding" functions.
Thx a lot,
BBD (Big Black Dog)
"Jonathan V Hays"
<jhays@jtan.com> To:
<wing_lam@jossynergy.com>
Sent by: cc:
<ccielab@groupstudy.com>
nobody@groupstudy Subject: RE: UDP flooding
.com
06/23/2003 11:11
PM
Please respond to
"Jonathan V Hays"
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
> Behalf Of wing_lam@jossynergy.com
> Sent: Monday, June 23, 2003 10:22 AM
> To: Connie Nie
> Cc: ccielab@groupstudy.com
> Subject: RE: UDP flooding
>
>
> Also, what is the use of access-list 201 deny 0xffff 0x0000
> in example?
You are denying MAC addresses with OUI of all ones.
HINT: So what type of MAC address would begin with all ones?
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