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Cisco Nexus 5000 Series Configuration Limits for Cisco NX-OS Release 5.2(1)N1(1)
OL-25851-01
Contents
Layer 2 and Layer 3 Topology Configuration Limits
 shows the configuration limits when using a Layer 3 module (N55-D160L3, N55-M160L3) on 
the Cisco Nexus 5500 Platform switch with Cisco NX-OS Release 5.2(1)N1(1):
Table 2
Cisco NX-OS Release 5.2(1) Layer 2 Switching Dual Homed Fabric Extender Configuration Limits
Feature
Cisco Nexus 5000 Platform
Verified Topology
1
1.
Verified Topology—Indicates the verified scaling capabilities with all listed features enabled at the same time. The numbers 
listed here exceed that used by most customers in their topologies. The scale numbers listed here are not the maximum verified 
values if each feature is viewed in isolation.
Maximum Limits
2
2.
Maximum Limits—Indicates the maximum scale capability tested for the corresponding feature individually. This number is 
the absolute maximum currently supported by Cisco NX-OS Release 5.0(3)N2(1) software for the corresponding feature. If the 
hardware is capable of a higher scale, future software releases may increase this maximum limit.
Active VLANs/VSANs per switch
507
507 (504 when FCoE is 
enabled - 31 are set aside 
for SANs)
VLAN/VSAN ID space
4013 unreserved space
4013 unreserved space
Logical interfaces
3
3.
Logical interfaces are a product of the number of VLANs times the number of ports. This parameter reflects the load of handling 
port programming, and is not dependent on the spanning-tree mode or configuration.
12,000
12,000
VLAN ACLs (VACLs) per switch
128 (10 unique VACLs)
1,024 (128 unique VACLs)
Port ACLs (PACLs) per switch
576
576
Member interfaces per EtherChannel
16
16
Member interfaces per SAN port channel
16
16
IGMP snooping Groups
1000
1000
Maximum FEXs per Cisco Nexus 5000 Series  12
12
Maximum FEXs dual homed to a vPC Cisco 
Nexus 5000 Series 
12
12
MAC table size
13,800
16,000
Number of switchport EtherChannels
16 (with the combination 
not exceeding 16, and not 
more than a total of 16 
ports per EtherChannel)
16 (with the combination 
not exceeding 16, and not 
more than a total of 16 ports 
per EtherChannel)
Number of FEX port channels/vPCs (across 
maximum number of FEXs)
576
576
SPAN sessions
2 active sessions
32 source VLANs as a 
TX source
2 active sessions
32 source VLANs as a TX 
source
Configurable QoS groups (including class 
default)
5
5
No-drop qos-groups
1 class - FCoE no-drop
3 (including FCoE)