Chapter 7 Interfaces

Table 41 Configuration > Network > Interface > Ethernet > Edit (continued)

LABEL

DESCRIPTION

Advertised Hosts

Select this to have the ZyWALL indicate to hosts to obtain DNS information through

Get Other

DHCPv6.

Configuration

 

From DHCPv6

Clear this to have the ZyWALL indicate to hosts that DNS information is not available in

 

 

this network.

 

 

Router

Select the router preference (Low, Medium or High) for the interface. The interface

Preference

sends this preference in the router advertisements to tell hosts what preference they

 

should use for the ZyWALL. This helps hosts to choose their default router especially

 

when there are multiple IPv6 router in the network.

 

Note: Make sure the hosts also support router preference to make this function work.

 

 

MTU

The Maximum Transmission Unit. Type the maximum size of each IPv6 data packet, in

 

bytes, that can move through this interface. If a larger packet arrives, the ZyWALL

 

discards the packet and sends an error message to the sender to inform this.

 

 

Hop Limit

Enter the maximum number of network segments that a packet can cross before

 

reaching the destination. When forwarding an IPv6 packet, IPv6 routers are required to

 

decrease the Hop Limit by 1 and to discard the IPv6 packet when the Hop Limit is 0.

 

 

Advertised

Configure this table only if you want the ZyWALL to advertise a fixed prefix to the

Prefix Table

network.

 

 

Add

Click this to create an IPv6 prefix address.

 

 

Edit

Select an entry in this table and click this to modify it.

 

 

Remove

Select an entry in this table and click this to delete it.

 

 

#

This field is a sequential value, and it is not associated with any entry.

 

 

IPv6

Enter the IPv6 network prefix address and the prefix length.

Address/

 

Prefix Length

The prefix length indicates what the left-most part of the IP address is the same for all

 

computers in the network, that is, the network address.

 

 

Advertised

This table is available when the Interface Type is internal. Use this table to

Prefix from

configure the network prefix if you want to use a delegated prefix as the beginning part

DHCPv6 Prefix

of the network prefix.

Delegation

 

 

 

Add

Click this to create an entry in this table.

 

 

Edit

Select an entry in this table and click this to modify it.

 

 

Remove

Select an entry in this table and click this to delete it.

 

 

#

This field is a sequential value, and it is not associated with any entry.

 

 

Delegated

Select the DHCPv6 request object to use for generating the network prefix for the

Prefix

network.

 

 

Suffix

Enter the ending part of the IPv6 network address plus a slash (/) and the prefix

Address

length. The ZyWALL will append it to the selected delegated prefix. The combined

 

address is the network prefix for the network.

 

For example, you got a delegated prefix of 2003:1234:5678/48. You want to divide it

 

into 2003:1234:5678:1111/64 for this interface and 2003:1234:5678:2222/64 for

 

another interface. You can use ::1111/64 and ::2222/64 for the suffix address

 

respectively. But if you do not want to divide the delegated prefix into subnetworks,

 

enter ::0/48 here, which keeps the same prefix length (/48) as the delegated prefix.

 

 

Address

This is the final network prefix combined by the delegated prefix and the suffix.

 

Note: This field displays the combined address after you click OK and reopen this

 

screen.

 

 

Interface

 

Parameters

 

 

 

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ZyWALL 110/310/1100 Series User’s Guide