ASA 5510 ISP Failover

[Janardhan Meesala]

Dear Gurus!!!!!

Configured ASA 5510 ISP failover and working fine.

My ASA as configured as DHCP server also. So its serves IP addressing details including mask,default-gateway, DNS server IPs.

Here my issue is whenever my ISP failover occurs my ASA sends previous ISP DNS server IPs to my inside clients.

Here i like to configure my ASA to serve IP addresses dynamically.

Or is there any global DNS IP addresses which will work for all ISPs?????

Help me to configure the same.

Regards,

MJR

[Kureli Sankar]

Why don't you hand 1 DNS from ISP1 and 1 DNS from ISP2 as dns servers along with the dhcp config?

4.2.2.2 - is one you can use. Some ISPs do not allow anything but thier own IPs for DNS so, you may have to double check.

-KS