ASA QUESTION - URGENT HELP PLEASE!!!

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Oct 14th, 2008
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Hi - I am new to Cisco NetPro forum,


I have a dilemma/question relating to bridging two networks utilising an ASA 5505 device.


We are in the process of connecting two MPLS networks with a 4Mbps link, for example:


MPLS 1 Network address is 172.100.0.0/24 - there are remote branch networks that connect to this network and those remote branch networks address range are: 172.100.1.0/24, 172.100.2.0/24, 172.100.3.0/24 etc.


Now, the second MPLS (MPLS 2) network address is 192.168.1.0/24 and again this network also has remote branch networks connecting to it and those network address range are: 192.168.2.0/24, 192.168.3.0/24, 192.168.4.0/24 etc.


We are in the middle of a company merger and are looking (in the short term) to bridge the two network utilising a spare ASA 5505 firewall, the requirements are that all 172.100.0.0/24 devices/traffic flow can connect to resources on the 192.168.0.0/24 network and vice versa - of course we will look at controlling which resource/service the 172.100.0.0 devices can contact using access lists.


All internet access for the 172.100.0.0 network will travel via 192.168.0.0 network.


We will connect the ASA on one end of the 4Mbps link, possibly on the 192.168.0.0 side.


My question to all experts - can you please recommend the best solution (with configuration examples) for the above scenario i.e. can I use the ASA 5505 as a bridge and if yes can you please help me?


I wait for your valued response or if you need any further information.

Regards / Eric


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ababab2222 Tue, 10/14/2008 - 00:58
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Hi Andrew - thank you for you vlaued response,


I may have not explained correctly in my post - What we are trying to achive is to allow traffic flow between the two networks so placing the ASA in the middle to achive this - is this possible? If yes, can you peovide examples of configurations?


We will have a 4Mbps lease line connecting from one MPLS to the other but require both networks to be seperate.


Can you or someone help?


Many thanks for your valued support/answer.

ababab2222 Tue, 10/14/2008 - 01:20
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Hi Andrew - thank you for your response,


Slightly confused - which link? your 2nd link is for a single internal network with internet connection??



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