E. Interface Faq; E01. How To Setup The Wan Interface With Pppoe Or Pptp; E02. How To Add A Virtual Interface (Ip Alias); E03. Why Can't I Get Ip Address Via Dhcp Relay - ZyXEL Communications ZYWALL USG 1000 Support Notes

ZyWALL USG 1000 Support Notes

E. Interface FAQ

E01. How to setup the WAN interface with PPPoE or PPTP?

First, you need to create an ISP account, which has protocol type of PPPoE or PPTP. Then you
need to create PPP interface on GUI menu Interface > PPPOE/PPTP. You can name this PPP
interface, for example 'ppp0' (you can have ppp0~ppp11 ppp interface, ppp12 is reserved to
modem dialup interface). After that, you need to create a policy route, which has next-hop
interface set to ppp0.

E02. How to add a virtual interface (IP alias)?

To add a virtual interface, go to GUI menu Interface > Ethernet, click the "+" icon on each
interface row. For example, I want to add a virtual interface of ge1. click the "+" icon from the
interface ge1 row, and fill out the necessary fields. It will create the virtual interface, ge1:1.

E03. Why can't I get IP address via DHCP relay?

It requires special support from a DHCP server. Some DHCP servers would check special
fields in a DHCP discover/request and it is possible for the servers to not to respond them. So
make sure your DHCP server supports DHCP relay.

E04. Why can't I get DNS options from ZyWALL's DHCP server?

There could be several reasons. If you configure a static IP on a WAN interface, you should
have custom defined DNS servers in the LAN interface or there would be no way to get DNS
servers from ISP. If the interface that provides the DNS server goes down, the DNS server
would be regarded as dead one and won't pass it to the LAN PCs. So make sure all the
interfaces that provide DNS server don't go down because of link down, ping-check or
becoming disabled.
E05. Why does the PPP interface dials successfully even its base interface goes
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