Comset CM685VX, Руководство пользователя, Страница: 104 / 108

CM685VX User Manual
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 Suppress logging : Suppress logging of the routine operation of these protocols.
 Allocate IP sequentially : Allocate IP addresses sequentially, starting from the lowest
available address.
 Filter private : Do not forward reverse lookups for local networks.
 Filter useless : Do not forward requests that cannot be answered by public name servers.
 Localise queries : Localise hostname depending on the requesting subnet if multiple IPs are
available.
 Expand hosts : Add local domain suffix to names served from hosts files.
 No negative cache : Do not cache negative replies, e.g. for non-existing domains.
 Strict order : DNS servers will be queried in the order of the resolvfile.
 Bogus NX Domain Override : List of hosts that supply bogus NX domain results.
 DNS server port : Listening port for inbound DNS queries.
 DNS query port : Fixed source port for outbound DNS queries.
 Max DHCP leases : Maximum allowed number of active DHCP leases.
 Max edns0 packet size : Maximum allowed size of EDNS.0 UDP packets.
 Max concurrent queries : Maximum allowed number of concurrent DNS queries.
3.6.12 Diagnostics
 Ping : It is a tool used to test the reachability of a host on an Internet Protocol (IP) network.
 Traceroute : It is a network diagnostic tool for displaying the route (path) and measuring transit
delays of packets across an Internet Protocol (IP) network.
 Nslookup : It is a network administration command-line tool for querying the Domain Name
System (DNS) to obtain domain name or IP address mapping or for any other specific DNS
record.
For example if you want to ping www.google.com, type the target domain name or IP address,
then click the button “Ping”. Wait a couple of seconds, the result will be shown as below.