Layer 2

Table 1. Layer 2 Maximums
Attribute	Product	Maximum number supported
MAC table size (without SPBM)	5320 Series	32,000
	5420 Series	32,000 for 5420F Series models 64,000 for 5420M Series models
	5520 Series	81,920
	5720 Series	164,000 for 5720MXW models 100,000 for 5720MW models
MAC table size (with SPBM)	5320 Series	16,000
	5420 Series	16,000 for 5420F Series models 32,000 for 5420M Series models
	5520 Series	40,960
	5720 Series	82,000 for 5720MXW models 50,000 for 5720MW models
Endpoint Tracking MAC addresses per switch	5320 Series	n/a
	5420 Series	n/a
	5520 Series	8,000
	5720 Series	8,000
Directed Broadcast interfaces	5320 Series	200 See Maximum Number of Directed Broadcast Interfaces.
	5420 Series	200 See Maximum Number of Directed Broadcast Interfaces.
	5520 Series	200 See Maximum Number of Directed Broadcast Interfaces.
	5720 Series	200 See Maximum Number of Directed Broadcast Interfaces.
Port-based VLANs Note: When you use Flex-UNI functionality, you can use the complete range from 1 to 4096 for port VLAN IDs.	5320 Series	4,059
	5420 Series	4,059
	5520 Series	4,059
	5720 Series	4,059
Private VLANs	5320 Series	See Private VLAN and Layer 2 E-Tree maximums
	5420 Series	See Private VLAN and Layer 2 E-Tree maximums
	5520 Series	See Private VLAN and Layer 2 E-Tree maximums
	5720 Series	See Private VLAN and Layer 2 E-Tree maximums
Protocol-based VLANs (IPv6 only)	5320 Series	1
	5420 Series	1
	5520 Series	1
	5720 Series	1
RSTP instances	5320 Series	1
	5420 Series	1
	5520 Series	1
	5720 Series	1
MSTP instances	5320 Series	12
	5420 Series	12
	5520 Series	12
	5720 Series	12
LACP aggregators	5320 Series	48-port models: 56 24-port models: 32 16-port models: 20
	5420 Series	56 (48 fixed ports, 4 Universal Ethernet ports, 4 SFP-DD ports)
	5520 Series	48-port models: up to 60 with channelization 24-port models: up to 36 with channelization
	5720 Series	64
Ports per LACP aggregator	5320 Series	8 active
	5420 Series	8 active
	5520 Series	8 active
	5720 Series	8 active
MLT groups	5320 Series	48-port models: 56 24-port models: 32 16-port models: 20
	5420 Series	56 (48 fixed ports, 4 Universal Ethernet ports, 4 SFP-DD ports)
	5520 Series	48-port models: up to 60 with channelization 24-port models: up to 36 with channelization
	5720 Series	64
Ports per MLT group	5320 Series	8 active
	5420 Series	8 active
	5520 Series	8
	5720 Series	8
Link State Tracking (LST) groups	5320 Series	48
	5420 Series	48
	5520 Series	48
	5720 Series	48
Interfaces per LST group	5320 Series	48-port models: 9 upstream/128 downstream 16- and 24-port models: 8 upstream/128 downstream
	5420 Series	8 upstream 128 downstream
	5520 Series	8 upstream 128 downstream
	5720 Series	8 upstream 128 downstream
SLPP VLANs	5320 Series	128
	5420 Series	128
	5520 Series	128
	5720 Series	500
VLACP interfaces	5320 Series	48-port models: 56 24-port models: 32 16-port models: 20
	5420 Series	56 (48 fixed ports, 4 Universal Ethernet ports, 4 SFP-DD ports)
	5520 Series	48-port models: up to 60 with channelization 24-port models: up to 36 with channelization
	5720 Series	64 with no SPB mode: up to 56 with SPBM mode with the channelization enabled when using 5720-VIM-2CE. 64 with no VIM: up to 54 with 5720-VIM-6YE.
Microsoft NLB cluster IP interfaces	5320 Series	Not supported
	5420 Series	Not supported
	5520 Series	200 See Maximum Number of Microsoft NLB Cluster IP Interfaces.
	5720 Series	200 See Maximum Number of Microsoft NLB Cluster IP Interfaces.

The number of Private VLANs/Layer 2 E-Tree varies depending on the number of private VLAN trunk ports as members. The following table provides the maximum numbers.

Table 2. Private VLAN and Layer 2 E-Tree maximums
Platform	Total Private VLANs and Layer 2 E-Tree with 2 Private VLAN trunk ports	Total Private VLANs and Layer 2 E-Tree with 4 Private VLAN trunk ports
5320 16- and 24-port models	40	20
5320 48-port models	100	50
5420 Series	100	50
5520 Series	200	100
5720 Series	200	100