4-21
Cisco ONS 15327 User Documentation, R3.3
June 2002
Chapter 4 IP Networking
ONS 15327 Routing Table
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.
4
172.20.214.93
255.255.255.255
0.0.0.0
pdcc0
5
172.20.214.94
255.255.255.255
172.20.214.93
pdcc0
Table 4-5
Sample Routing Table Entries (continued)
Entry
Destination
Mask
Gateway
Interface
Summary of Contents for ONS 15327
Page 22: ...Contents xxii Cisco ONS 15327 User Documentation June 2002 I N D E X ...
Page 30: ...Figures xxviii Cisco ONS 15327 User Documentation June 2002 ...
Page 44: ...Procedures xlii Cisco ONS 15454 Installation and Operations Guide R3 2 June 2002 ...
Page 540: ...Glossary GL 16 Cisco ONS 15327 User Documentation R3 3 June 2002 ...