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ZT8101 Users Guide 95
Using the Web Console
3. Configure these fields.
4. Click Apply.
To configure the static BOOTP relay setup
You must configure the BOOTP/DCHP relay agent so that it knows the servers’ IP addresses and
subnet names (IP interface names).
1. In the left panel, click Switch Utilities.
2. In the top panel under Others, click BOOTP/DHCP Relay Interface Configurations
.
3. Click New and configure these fields.
4. Click Apply.
The server is added to the BOOTP/DHCP Relay Setup list.
5. To add another server, repeat steps 2 and 3. Each IP interface can be configured for four
servers.
6. To remove a server, select the server and click Delete.
DNS Relay
DNS relay enables the switch to act as a DNS cache or proxy and to forward DNS requests to the
DNS server only when required. Whether you enable DNS relay depends upon whether you want
to
• Ssave a DNS server or the linking WAN extraneous or repetitive traffic.
• Try to shorten the response time for a DNS request on a slow or long WAN.
• Change or control the IP response for a series of DNS requests.
• Control which servers are used for DNS.
Field Description
BOOTP/DHCP Relay Status Enables or disables the BOOTP/DHCP relay function.
BOOTP Hops Count Limit
Sets the maximum number of hops (routers) that the BOOTP
messages can be relayed through. If a packet’s hop count is
more than the hop count limit, the packet is dropped. The
range is between 1—16 hops. The default value is 4.
BOOTP/DHCP Relay Time Threshold
Sets the minimum time (in seconds) that the switch will wait
before forwarding a BOOTREQUEST packet. If the value in
the seconds field of the packet is less than the relay time
threshold, the packet will be dropped. The range is between
1—9999 seconds. The default value is 4 seconds.
Field Description
Interface Name
Specifies the subnet name (IP interface name) of the network that the
BOOTP or DHCP server is located on.
BOOTP/DHCP Server
Specifies the IP address of the BOOTP or DHCP relay server. Multiple
servers may be entered for a given subnet name (IP interface name).