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22 NTU-2V, NTU-RG Optical Network Terminals
4.1.5 The Route Submenu. The Routing Table
The menu shows the routing table.
Destination – destination IP address;
Gateway – gateway IP address;
Subnet mask – subnet mask (Genmask);
Flag – routing flag:
– U – active routing;
– I – inactive routing, packets will be rejected;
– G – the routing uses gateway;
– H – destination is a separate host;
– R – restored routing;
– D – the routing was created after receiving a redirected ICMP message;
– M – the routing was changed by a redirected ICMP message;
Metric – routing priority;
Service – a service the routing is associated with;
Interface – an interface the routing is associated with.
4.1.6 The ARP Submenu. Display of the ARP Protocol Cache
The ARP efficiency depends a lot on ARP cache presented in every host. The cache contains Internet
addresses and corresponding MAC addresses. Every record is stored in cache for 5 minutes since its creation.
IP-address – client IP address;
Flags – status flags:
– Complete – active client;
– Incomplete – client does not respond to ARP queries;
HW-Address – client MAC address;
Device – client interface.
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