ip directed-broadcast and ip forward-protocol

From: Rob Nockowitz (robnockowitz@msn.com)
Date: Tue Nov 08 2005 - 14:35:28 GMT-3


hello all:

i have a few question concerning ip directed-broadcast and ip
forward-protocol.. best way for me to ask is as follows:

suppose a question worded like this:

configure r1 to forward mobile-ip packets arriving on the atm 1/0 interface to
10.10.10.1

so if one does this..

!
ip forward-protocol udp mobile-ip
!
interface ATM1/0
 ip address 20.20.20.1 255.255.255.0
 ip helper-address 10.10.10.1

1:
will it work? (cannot test mobile-ip in my lab)

2:
having configured "ip forward-protocol udp mobile-ip", will this ONLY forward
udp mobile-ip ?
or, will it still forward all of the "default" udp ports [dhcp-discover
(bootp), netbios, etc..] enabled by the "ip helper-address " command?

3:
should this type of question be interpreted as ONLY forward udp mobile-ip ?
{ask proctor maybe??}
if so, should the following be added to the above config:

!
access-list 150 per udp any any eq mobile-ip
!
interface ATM1/0
 ip directed broadast 150

(never really understood this mobile-ip stuff)
thanks
rob



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