Netgear XSM4324FS CLI Manual Software Version 12.x - Page 674

M4300 Intelligent Edge Series Fully Managed Stackable Switches The columns for the routing table display the following information: Term Definition Code The codes for the routing protocols that created the routes. Default Gateway The IP address of the default gateway. When the system does not have a more specific route to a packet's destination, it sends the packet to the default gateway. IP-Address/Mask The IP-Address and mask of the destination network corresponding to this route. Preference The administrative distance associated with this route. Routes with low values are preferred over routes with higher values. Metric The cost associated with this route. via Next-Hop The outgoing router IP address to use when forwarding traffic to the next router (if any) in the path toward the destination. Route-Timestamp The last updated time for dynamic routes. The format of Route-Timestamp will be Days:Hours:Minutes if days > = 1 Hours:Minutes:Seconds if days < 1 Interface The outgoing router interface to use when forwarding traffic to the next destination. For reject routes, the next hop interface would be Null0 interface. T A flag appended to a route to indicate that it is an ECMP route, but only one of its next hops has been installed in the forwarding table. The forwarding table may limit the number of ECMP routes or the number of ECMP groups. When an ECMP route cannot be installed because such a limit is reached, the route is installed with a single next hop. Such truncated routes are identified by a T after the interface name. To administratively control the traffic destined to a particular network and prevent it from being forwarded through the router, you can configure a static reject route on the router. Such traffic would be discarded and the ICMP destination unreachable message is sent back to the source. This is typically used for preventing routing loops. The reject route added in the RTO is of the type OSPF Inter-Area. Reject routes (routes of REJECT type installed by any protocol) are not redistributed by OSPF/RIP. Reject routes are supported in both OSPFv2 and OSPFv3. Command example: (NETGEAR Switch) #show ip route Route Codes: R - RIP Derived, O - OSPF Derived, C - Connected, S - Static B - BGP Derived, IA - OSPF Inter Area E1 - OSPF External Type 1, E2 - OSPF External Type 2 N1 - OSPF NSSA External Type 1, N2 - OSPF NSSA External Type 2 Default gateway is 1.1.1.2 C 1.1.1.0/24 [0/1] directly connected, 0/11 C 2.2.2.0/24 [0/1] directly connected, 0/1 C 5.5.5.0/24 [0/1] directly connected, 0/5 S 7.0.0.0/8 [1/0] directly connected, Null0 Routing Commands 674 CLI Command Reference Manual