new IP block and secondary IP

[fraserchen]

I have a CP R55 AI on SPLAT. got a new IP block from ISP. (Not necessary to do ISP redundancy, just want more public IP for NAT).

I put the 2 routers onto the same external switch. On SPLAT, I added eth0:1 as secondary external IP, added a new default gateway with matric value 20.

Now I can see eth0:1 in SPLAT sysconfig, but can not detect it through GUI fw, get interface with topology.

My question is:
since I can retrieve the virtual interface topology, do I have to add a NIC instead of virtual IP(eth0:1)?

TIA

[fraserchen]

Update:

Tested a solution as following, it works.
1)add a new external interface
2)install load sharing ISP redundancy

Comments:
1)the 2nd default gateway with matric 20 was removed automatically after I installed ISP redundancy policy.

2)If I disable ISP redundancy, enable 2nd default gateway(ISP-2) with matric value, the NAT address I configured for the new IP block doesn't work because FW still forwards the response to ISP-1, the default gateway.

fraser

[fraserchen]

Update 2:

Instead of ISP redundancy, I tried to put secondary IP on external interface to represent new ip block and failed.

after I configured secondary IP and secondary default gateway IP, everything seems fine. then I login to FW GUI, could not GET the secondary IP from fw object. then I manually added the IP and choose it to be external Interface. After I installed this policy, fw detected the ISP-2 interface down immediately. Even if I was able to ping the ISP-2 gateway IP.