
Configuring IP, ARP, RIP, and OSPF Services
A-16
117356-E Rev 00
Parameter: Forward Cache Size
Path: Configuration Manager > Protocols > IP > Interfaces
Default: 128
Options: 64-entry minimum; no maximum
Function: Specifies the maximum number of entries allowed in the forwarding table at
one time.
Instructions: Specify a forwarding table size for each interface. This parameter controls the
number of destinations that are cached in the forwarding table on this receiving
interface. When this interface receives an IP packet, the router looks up the
destination in the forwarding table. Therefore, an interface that receives
packets for a large number of destinations may benefit from a larger
forwarding table. The larger the number of entries, the more likely it is that the
destination will already be in the forwarding table and the faster the route
lookups will be for those destinations. Configuring a forwarding table size that
is larger than necessary reduces the total amount of memory usable by other
applications. Configuring a forwarding table size that is too small can affect
overall router performance. Check the number of cache hits and misses to
determine the optimal size of the forwarding table. For debugging purposes, if
you see the wfIpInterfaceCacheMisses statistic going up at a rapid rate,
consider increasing the table size. However, an occasional cache miss does not
warrant an increase in table size.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.1.4.1.104
Parameter: Enable Security
Path: Configuration Manager > Protocols > IP > Interfaces
Default: Disable
Options: Enable
|
Disable
Function: Specifies whether Revised IP Security Option (RIPSO) is enabled for the
interface.
Instructions: If you do not support RIPSO on your network, accept the default setting,
Disable. If you are configuring RIPSO support, set this parameter to Enable to
access the rest of the RIPSO parameters.
MIB Object ID: 1.3.6.1.4.1.18.3.5.3.2.1.4.1.76
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