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Table 10 Configuration > WAN > Management WAN: IPoE Encapsulation (continued)
LABEL
DESCRIPTION
VID
Enter a VLAN identifier between 11 to 4094 (the 802.1Q tag specifies only a priority and is
referred to as a priority tag).
VID 1 (the default VLAN ID) is reserved for a management VLAN.
Note: This field is not available when you are configuring the default WAN entry.
IP Address
This is not available when you select IPv4 Only or Dual Stack in the IPv6/IPv4 field.
Obtain an IP
Select this option If your ISP did not assign you a fixed IP address. This is the default selection.
Address
Automatically
Static IP Address
Select this option If the ISP assigned a fixed IP address.
IP Address
Enter your WAN IP address in this field if you selected Static IP Address.
Subnet Mask
Enter the Subnet Mask in this field.
Gateway IP
Enter a Gateway IP Address (if your ISP gave you one) in this field.
Address
MTU Size
Enter the MTU (Maximum Transmission Unit) size for each packet. If a larger packet arrives, the
EMG2881-T20A divides it into smaller fragments.
DNS Server
First DNS Server
Select Obtained From ISP if your ISP dynamically assigns DNS server information (and the
EMG2881-T20A's WAN IP address). The field to the right displays the (read-only) DNS server IP
Second DNS Server
address that the ISP assigns.
Third DNS Server
Select User-Defined if you have the IP address of a DNS server. Enter the DNS server's IP
address in the field to the right.
Select None if you do not want to configure DNS servers. If you do not configure a DNS server,
you must know the IP address of a computer in order to access it.
WAN MAC Address
The MAC address section allows users to configure the WAN port's MAC address by using the
EMG2881-T20A's MAC address, or manually entering a MAC address.
Factory default
Select Factory default to use the factory assigned default MAC Address.
Set WAN MAC
Select this option and enter the MAC address you want to use.
Address
IPv6 Address
This is not available when you select IPv6 Only or Dual Stack in the IPv6/IPv4 field.
Obtain an IP
Select this if you want to obtain an IPv6 address from a DHCPv6 server.
Address
•
Automatically
•
Static IP Address
Select this if you have a fixed IPv6 address assigned by your ISP.
IPv6 Address
Enter the IPv6 address assigned by your ISP.
Prefix length
Enter the address prefix length to specify how many most significant bits in an IPv6 address
compose the network address.
IPv6 Default
Enter the IP address of the next-hop gateway. The gateway is a router or switch on the same
Gateway
segment as your EMG2881-T20A's interface(s). The gateway helps forward packets to their
destinations.
Link Local Only
Select this option to use the link-local address which uniquely identifies a device on the local
network (the LAN).
IPv6 DNS server
This is not available when you select IPv6 Only or Dual Stack in the IPv6/IPv4 field.
Chapter 6 WAN
Select DUID-LL (Default) to have the EMG2881-T20A use DUID-LL (DUID Based on Link-layer
Address) for identification when exchanging DHCPv6 messages.
Select DUID-LLT to have the EMG2881-T20A use DUID-LLT (DUID Based on Link-layer
Address Plus Time) for identification when exchanging DHCPv6 messages.
EMG2881-T20A User's Guide
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