3.7 DHCP snooping

The following tables show the capacity limits for DHCP snooping.

Table 3-39: Maximum DHCP snooping Entries
Receiving-side flow detection mode	Number of binding database entries #1		Number of terminal filter entries #2
Receiving-side flow detection mode	Total number of dynamic/static	Static	Number of terminal filter entries #2
layer3-dhcp-1, layer3-suppress-dhcp-1	3070	256	3070
custom	3070	256	0~3070^#3
All other cases	3070	256	0

Note #1

Each terminal connected to an untrusted port takes up one entry.

Note #2

Each port belonging to a binding database entry takes up one entry.

For channel groups, the number of ports per channel group is calculated.

Note #3

The range is from 0 entries when DHCP snooping terminal filters are not specified in the entry block to 3070 entries when DHCP snooping terminal filters are specified in the entry block as the maximum number of entries in the binding database.

Table 3-40: Maximum VLAN count for DHCP snooping
Model	Maximum number of VLANs
All models	1024