Giving a device an external address

LizardKing

LizardKing

LizardKing

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Joined
18 Oct 2002
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The Land of Roundabouts
Sorry for what seems to be a bit of a n00b question but networking just isn't my thing :)

I've got a Zyxel Prestige 662HW and 4 ip's of which 2 are usable from my ISP, i need to give a SAP router the 2nd usable IP, only i cant see any easy way of doing this :o

The SAP router has already been preconfigured to have the 2nd ip and the 1st ip as its gateway, i'm hoping this is possible as otherwise it needs to get sent back to Germany to be reconfigured!

Any help would be great, thanks!
 
Ah, think i've found the answer!

I have P662HW-D1 setup in a similar configuration. The P662 receives a public IP from ISP and the ISP has assigned a /30 subnet (mask = 255.255.255.252) to the LAN. Assume the ISP has given 1.2.3.0/30 as public IP block, therefore we have:
1.2.3.0 - subnet (reserved)
1.2.3.1 - available for P662 or my router
1.2.3.2 - available for P662 or my router
1.2.3.3 - broadcast (reserved)

Therefore I configure the P662 as follows:
- LAN IP is 1.2.3.1 (255.255.255.252)
- NAT/SUA is disabled
- adjust firewall to allow WAN-LAN

And I configure my router as follows:
- WAN IP is 1.2.3.2 (255.255.255.252)
- Gateway is 1.2.3.1

And then everything works.
Click to expand...

Handy thing to know, previous routers I've used do all this via a fisher price style gui :D
 
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