Cisco Firewall :: Migrating To New ISP - ASA 5510

Jan 4, 2012

I currently have the following set up (excuse my quick drawing):
 
--------------Vendors VPN Router----                                                           
|    ------Cisco 3000 VPN------        |                                                                        
|    |                                   |        |
Private Network-------ASA5510---------Pub Switch------Cisco Router 2x T1

I've been tasked with migrating to the new ISP, which provides us with Cisco ME-3400E switch and /26 public subnet. I currently have 15 static NATs and 14 L-2-L VPN tunnels configured in ASA. Is there a way to configure additional Outside int on ASA and use it to migrate the existing VPN tunnels and static NATs? I'm trying to avoid downtime and hope to do it step by step. I'm thinking about adding additional Public switch, so I can also migrate vendor's router and VPN concentrator, which need to be in parallel to ASA. Assuming that this is possible I'd would like to do the following:

1.Configure and connect additional Outside Interface on ASA - public IP address and ACLs

2.Connect it to additional "Public switch", which would be configured with public IP address and connected to new ISP's Cisco ME-3400E.

3.Migrate my VPN tunnels and static NATs.

4.Migrate vendors equipment/VPN concentrator

5.Update my global NAT pool

6.Shut down old ISP

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I have recently migrated from a PIX 515e to an ASA 5510. In the main this was successful. However, I have a number of L2L VPN's (all connecting to Cisco PIX 501 or 505). The majority of these VPN's are working fine. However, I have a couple of VPN's that are causing me a problem. It seems like the tunnel is established for anything between 10 minutes and 4 hours before going 'down'. I cannot initiate the tunnel again from the hub end (ASA 5510) of the VPN.However, if the remote end reboots the PIX, the tunnel is re-established.The ASA is running 8.3(1) and the remote PIX's will be running various versions of code but will all be 6.3(x). The strange thing here is that the majority of the sites are working and the config for each tunnel is identical other than the access-lists for interesting traffic and peer address.

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On the running ASA 5510 there is:
 
one interface for WEB
static IP xx.xxx.xxx.178
route  0.0.0.0 xx.xxx.xxx.177

[Code].....

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export from LMS 4.2.3
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L-N-PI12-100-M=
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L-PILMS42-100-M
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reason=DEL_REASON-IKE_NEG_FAILED 
 
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Jul 4, 2012

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!
boot-start-marker
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...
Router#sh bootvar
BOOT variable = bootflash:s2t54-advipservicesk9-mz.SPA.150-1.SY1.bin,1;

[code]....

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Apr 15, 2011 19:41:55 Session 4, Peer 10.190.249.40 PASS welcome2acsApr 15, 2011 19:41:55 Session 4, Peer 10.190.249.40 230 User logged inApr 15, 2011 19:41:55 Session 4, Peer 10.190.249.40 FTP: Login successfulApr 15, 2011 19:41:55 Session 4, Peer

[Code].....

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[Code].....

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: Saved
:

[Code]......

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