Cisco ONS 15600 Reference Manual page 197

Chapter 9 Management Network Connectivity
Table 9-5
Entry
4
5
Entry 1 shows the following:
Destination (0.0.0.0) is the default route entry. All undefined destination network or host entries on
•
this routing table will be mapped to the default route entry.
Mask (0.0.0.0) is always 0 for the default route.
•
Gateway (172.20.214.1) is the default gateway address. All outbound traffic that cannot be found in
•
this routing table or is not on the node's local subnet will be sent to this gateway.
• Interface (cpm0) indicates that the ONS 15600 SDH Ethernet interface is used to reach the gateway.
Entry 2 shows the following:
Destination (172.20.214.0) is the destination network IP address.
•
Mask (255.255.255.0) is a 24-bit mask, meaning all addresses within the 172.20.214.0 subnet can
•
be destinations.
Gateway (172.20.214.92) is the gateway address. All outbound traffic belonging to this network is
•
sent to this gateway.
• Interface (cpm0) indicates that the ONS 15600 SDH Ethernet interface is used to reach the gateway.
Entry 3 shows the following:
Destination (172.20.214.92) is the destination host IP address.
•
Mask (255.255.255.255) is a 32-bit mask, meaning only the 172.20.214.92 address is a destination.
•
Gateway (127.0.0.1) is a loopback address. The host directs network traffic to itself using this
•
address.
Interface (lo0) indicates that the local loopback interface is used to reach the gateway.
•
Entry 4 shows the following:
Destination (172.20.214.93) is the destination host IP address.
•
Mask (255.255.255.255) is a 32-bit mask, meaning only the 172.20.214.93 address is a destination.
•
Gateway (0.0.0.0) means the destination host is directly attached to the node.
•
Interface (pdcc0) indicates that a SDH DCC interface is used to reach the destination host.
•
Entry 5 shows a DCC-connected node that is accessible through a node that is not directly connected:
Destination (172.20.214.94) is the destination host IP address.
•
Mask (255.255.255.255) is a 32-bit mask, meaning only the 172.20.214.94 address is a destination.
•
Gateway (172.20.214.93) indicates that the destination host is accessed through a node with the IP
•
address 172.20.214.93.
Interface (pdcc0) indicates that a SDH DCC interface is used to reach the gateway.
•
78-18400-01
Sample Routing Table Entries (continued)
Destination Mask
172.20.214.93 255.255.255.255
172.20.214.94 255.255.255.255
Gateway Interface
0.0.0.0 pdcc0
172.20.214.93 pdcc0
Cisco ONS 15600 SDH Reference Manual, Release 9.0
9.3 Routing Table
9-21