Table 4-5 Sample Routing Table Entries - Cisco ONS 15327 User Documentation

Chapter 4 IP Networking
Table 4-5
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 15327 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 a destination.
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 15327 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 SONET SDCC 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 IP
address 172.20.214.93.
Interface (pdcc0) indicates that a SONET SDCC interface is used to reach the gateway.
•
June 2002
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 15327 User Documentation, R3.3
ONS 15327 Routing Table
4-21