Cisco Nexus 5000 Series Configuration Limits

For Cisco NX-OS Release 5.0(2)N1(1) and Release 5.0(2)N2(1)

This document describes the Cisco configuration limits for Cisco Nexus 5000 Series switches running Cisco NX-OS Release 5.0(2)N1(1). Some of these limits apply only when one or more Cisco Nexus 2000 Fabric Extender units are attached to the switch.

Configuration Limits

The following tables list the Cisco verified limits for Cisco Nexus 5000 Platform switches and Cisco Nexus 5500 Platform switches running Cisco NX-OS Release 5.0(2)N1(1).

Table 1 Ethernet Environments

Feature

Cisco Nexus 5000 Platform

Cisco Nexus 5500 Platform

Active VLANs/VSANs per switch

507 (504 when Fibre Channel over Ethernet is enabled) 31 are set aside for VSANs and the remaining are for VLANs.

 4013 (31 are set aside for VSANs and the remaing are for VLANs)

VLAN/VSAN ID Space

4,013 Unreserved Space

 4013 Unreserved Space

Logical Interfaces

1

12,0002

 12,0003

MST Instances per bridge topology per switch

64 (IEEE Standard)

 64 (IEEE Standard)

VLAN ACLs (VACLs) per switch

1,024

 1024

Port ACLs (PACLs) per switch

2564

 256

ACL Accounting

32

 32

Member interfaces per EtherChannel

16

 16
IGMP Groups 1,000 4,000
1 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.
2 12,000 with a maximum subset of 4000 non-edge STP logical interfaces.
3 For the Cisco Nexus 5548 switch, there are no non-edge restrictions.
4 There can be a maximum of 50 ACLs per PACL.
Table 2 Fibre Channel Environments

Feature

Cisco Nexus 5000 Platform

 Cisco Nexus 5500 Platform

Device Aliases per fabric

8,000

8,000

Switches per physical fabric or VSAN

505

50

Domains per VSAN

406

40

Native FC Links per switch

16—Requires two N5K-M1008 expansion modules.

16—Requires two N5K-M1008 expansion modules.

FLOGIs or FDISCs per NPV port group

255

255

Zones per virtual or physical F port (includes all VSANs)

32

32

Zone sets per switch (includes all VSANs)

5007

500

Zone members per physical fabric (includes all VSANs)

8,0008

8,000

Zones per switch (includes all VSANs)

8,000

8,000

Maximum diameter of a SAN Fabric

3 hops9

3 hops

FSPF interface instances per switch

51210

512

ISL instances per switch

25611

256

Virtual Fibre Channel interfaces

16012

160

Max FCIDs allocated

2,048

2048

Fibre Channel Flows

32

32
5 The switch is capable of supporting up to 239 switches per fabric but this is not currently implemented.
6 The switch is capable of supporting up to 239 domains per VSAN but the scale is not currently implemented.
7 The switch is capable of 1000 Zone Sets but this is not currently implemented.
8 The switch is capable of supporting up to 20,000 zone members per fabric but the scale is not currently implemented.
9 The switch is capable of supporting up to 12 hops but the scale is not currently implemented.
10 The switch is capable of supporting 4096 (the number of Extended ISLs (16) times the number of VSANs (256)) but the scale is not currently implemented.
11 Each ISL instance can support up to 32 VSAN instances.
12 The switch is capable of supporting 480 virtual Fibre Channel interfaces but the scale is not currently implemented.
Table 3 General Parameters

Feature

Cisco Nexus 5000 Platform

 Cisco Nexus 5500 Platform

Maximum Fabric Extenders per Cisco Nexus 5000 Series or Nexus 5500 Series switch

12 units

13

16 units

Maximum Fabric Extenders dual-homed to a vPC Cisco Nexus 5000 Series or Nexus 5500 Series switch pair

12 units14

16 units

MAC Table Size

16,000 entries15

32,000 entries 16

 

Event Traps - forward via Email

4 destinations17

4 destinations

Port Channels

4 SAN Port Channels

 4 SAN Port Channels

EtherChannels

 16 EtherChannels (with the combination not exceeding 16, and not more than a total of 16 ports per EtherChannels)

48 Etherchannels

Ports assigned to a port profile

256

 256

SPAN Sessions

2 active sessions

4 active sessions
Configurable QoS groups (including class default) 5 6
No-drop qos-groups 3 (including FCoE) 4
QoS Marking CoS CoS and DSCP
13 The number of Fabric Extenders is limited by the total number hosts connected through the single homed Fabric Extenders to the parent Cisco Nexus 5000 Series switch. This applies both in the case where the parent switch is running vPC or not.
14 The number of Fabric Extenders is limited by the total number hosts connected through dual homed Fabric Extenders to a pair of Cisco Nexus 5000 Series switches running vPC. In dual homed Fabric Extender vPC mode, the Fabric Extenders provide a redundant network path to the hosts in case of a direct failure in the primary path.
15 2,200 entries are reserved multicast MAC addresses. The usable limit for unicast MAC addresses is 13,800.
16 4,000 entries are reserved multicast MAC addresses; 25,000 entries are reserved unicast entries.
17 The switch is capable of up to 50 different destinations but this is not currently implemented.