Monitoring and Configuring the Forwarding Cache (Layer 3)

• To clear the statistics only, but still leave the entry in the table, click Clear.

3.Use Figure 11-5 to review the FE Cache fields:

 

Table 11-5.FE Cache Parameters

 

 

Parameter

Defines...

 

 

PRE

The Packet Routing Engine in question.

 

 

Type

The type of packet (for example, IP unicast, IP multicast).

 

 

Mode

The table mode which includes:

 

• DA-Only

 

• SA & DA

 

• SA only

 

The table mode indicates what values are used in a comparison

 

to determine whether or not a packet is forwarded.

 

 

Memory Use in Bytes

Memory used by each entry.

 

 

Total Entries

The number of cumulative entries since the last time the

 

statistics were cleared.

 

 

Current Entries

The number of active entries.

 

 

Aged Entries

The number of entries aged out.

 

 

Duplicate Add

The number of attempts at adding some slow path entries.

Attempts

 

 

 

Failed Add Attempts

The number of failed attempts at adding a forwarding entry.

 

 

Entries Removed Due

The number of entries removed because of route deletions.

to Route Deletes

 

 

 

Entries Removed Due

The number of entries removed because of route changes.

to Route Changes

 

 

 

Lookup Hits

Cache hits.

 

 

Lookup Misses

Cache misses.

 

 

Lookup Levels

Cache depth.

 

 

11-6

Cajun P550/P220 Switch Operation Guide