Netgear M4100-26G (GSM7224v2h2) - 22‐port GE + 4 GE Combo L2 Managed Switch Software Guide

This command displays a summary of the memory allocation from the routing heap. The 
routing heap is a chunk of memory set aside when the system boots for use by the routing 
applications.

(NETGEAR Switch) #show routing heap summary 

Heap Size....................... 92594000 bytes 

Memory In Use................... 149598 bytes (0%) 

Memory on Free List............. 78721 bytes (0%) 

Memory Available in Heap........ 92365249 bytes (99%) 

In Use High Water Mark.......... 210788 bytes (0%)

This section describes the commands you use to view and configure VLAN routing and to 
view VLAN routing status information.

This command enables routing on a VLAN. The vlanid value has a range from 1 to 4093. The 
[interface ID] value has a range from 1 to 128. Typically, you will not supply the interface ID 
argument, and the system automatically selects the interface ID. However, if you specify an 
interface ID that is already in use, the CLI displays an error message and does not create the 
VLAN interface. 

Format

show routing heap summary

Mode

Privileged EXEC

Heap Size

The amount of memory, in bytes, allocated at startup for the routing heap.

Memory In Use

The number of bytes currently allocated.

Memory on Free List

The number of bytes currently on the free list. When a chunk of memory from the 
routing heap is freed, it is placed on a free list for future reuse.

Memory Available in 
Heap

The number of bytes in the original heap that have never been allocated.

In Use High Water 
Mark

The maximum memory in use since the system last rebooted.

Format

vlan routing <vlan-id> [interface id]

Mode

VLAN Config