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ISP migration cisco 1841 ASA5510

I have a problem,

I want migrate from ISP Internet B to Internet A .  The mail service is neccessary to continu to communicate throught Internet B but the default gateway throught Internet A.

Do you have a solution Thks

G.GELINAS@VIDEOTRON.CA

migration_ISP_2.bmp

1 REPLY

Re: ISP migration cisco 1841 ASA5510

Hi,  I can think of two options

Option1 - if you have the Ip block currently assigned by ARIN which allows you to have and ISP announce the public IP you can have the ISP that is currently routing your 67.70.247.xxx IP block via Cisco 1841 to stop routing that block and at the same time ask ISP for internet A to route that block via ASA5510 in conjunction with 206.162.188.xxx IP block, then in the ASA5510 you can re-create static NAT and rules for your mail services using the 67.70.247.xxy ip address ALL via 206.162.188.XXX gateway. ( in this scenario you will completely shut down the 1841 router and Internet B ISP )

Optoin2 -  in Cisco 1841 router  have PBR configure for the mail server 172.16.220.26 to use ASA5510 as its next hop router for outbound traffic and still maintain inbound mail services via Cisco 1841 IP 67.70.247.xxy

Regards

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