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Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter 12 CTC Network Connectivity
12.4 Routing Table
• Interface—Shows the ONS 15454 SDH interface used to access the destination. Values are:
–
motfcc0—The ONS 15454 SDH Ethernet interface, that is, the RJ-45 jack on the TCC2/TCC2P
card and the LAN connection on the MIC-C/T/P FMEC
–
pdcc0—An SDCC interface, that is, an STM-N trunk card identified as the SDCC termination
–
lo0—A loopback interface
Table 12-8 shows sample routing entries for an ONS 15454 SDH.
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 are 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 are sent to this gateway.
• Interface (motfcc0) indicates that the ONS 15454 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 a destination.
• Gateway (172.20.214.92) is the gateway address. All outbound traffic belonging to this network is
sent to this gateway.
• Interface (motfcc0) indicates that the ONS 15454 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.
Table 12-8 Sample Routing Table Entries
Entry Destination Mask Gateway Interface
1 0.0.0.0 0.0.0.0 172.20.214.1 motfcc0
2 172.20.214.0 255.255.255.0 172.20.214.92 motfcc0
3 172.20.214.92 255.255.255.255 127.0.0.1 lo0
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