Introduction

The values provided in this guide should not be interpreted as theoretical system limits for Cisco Nexus 3000 Series hardware or Cisco NX-OS software. These limits refer to values that have been validated by Cisco. They can increase over time as more testing and validation is done.

Verified Scalability Limits

The tables in this section list the Cisco verified scalability limits for Cisco NX-OS Release 7.0(3)I7(7). The values provided in these tables focus on the scalability of one particular feature at a time.

Each number is the absolute maximum currently supported by this Cisco NX-OS release for the corresponding feature. If the hardware is capable of a higher scale, future software releases might increase this verified maximum limit. Results might differ from the values listed here when trying to achieve maximum scalability with multiple features enabled.


Note

  • If the verified maximum values are exceeded in an ALPM or a non-ALPM mode, you get a table full syslog even in the hash collision scenario.

  • For Verified Maximum, 16 path ECMP is tested with 40K IPv4 and 40K IPv6.

  • If your scale requirements exceed either the Verified Topology or the Verified Maximum limit, please contact your Cisco representative. Based on your requirements, it may be possible to validate support for your requirement, as long as the scale capability of the hardware is not exceeded.


Table 1. Unicast Routing Verified Scalability Limits (Unidimensional)

Feature

3000 Platform Verified Limit

3100 Platform Verified Limit (ALPM Mode)

3100 Platform Verified Limit (Non-ALPM Mode)

3132Q Platform Verified Limit

3132Q-V Platform Verified Limit

3132Q-X Platform Verified Limit

3172PQ Platform Verified Limit

31108PC-V Platform Verified Limit

31108TC-V Platform Verified Limit

3232C Platform Verified Limit

3264Q-S Platform Verified Limit

Active VLANs per switch

507 (RSTP) and 4000 (MSTP)

Not applicable

Not applicable

507 (RSTP) and 4013 (MSTP)

507 (RSTP) and 4013 (MSTP)

507 (RSTP) and 4013 (MSTP)

507 (RSTP) and 4013 (MSTP)

507 (RSTP) and 4013 (MSTP)

507 (RSTP) and 4013 (MSTP)

500 (RSTP) and 3900 (MSTP)

500 (RSTP) and 3900 (MSTP)

BFD neighbors

64

64

Not applicable

104

104

104

104

104

104

256

Not applicable

BFDv6 neighbors

64

64

Not applicable

104

104

104

104

104

104

256

Not applicable

BGP neighbors

141

141

Not applicable

140

140

140

140

140

140

256

Not applicable

BGPv4 neighbors (vPC)

141

141

Not applicable

128

128

128

140

141

141

256

Not applicable

BGPv4 neighbors (non-vPC)

141

Not applicable

Not applicable

141

141

141

141

141

141

Not applicable

Not applicable

BGPv6 (vPC)

128

128

Not applicable

128

128

128

128

128

128

256

Not applicable

BGPv6 (non-vPC)

128

128

Not applicable

128

128

128

128

128

128

Not applicable

Not applicable

BGP6

128

128

Not applicable

128

128

128

128

128

128

256

Not applicable

Configurable QoS groups

8

Not applicable

Not applicable

8

8

8

8

8

8

8

8

EtherChannel Members

32

Not applicable

Not applicable

32

32

32

24

24

24

32

32

ECMP paths

16

16

16

16

16

16

16

16

16

16

16

ECMP

64-way

64-way

Not applicable

64-way

64-way

64-way

64-way

64-way

64-way

64-way

64-way

HSRP

500

500

Not applicable

500

500

500

500

500

500

400

500

HSRPv6

500

500

Not applicable

500

500

500

490

490

490

400

400

IGMP Snooping groups

8,000

Not applicable

Not applicable

8,000

8,000

8,000

8,000

8,000

8,000

8,000

8,000

IPv4 hosts

8,000 (Nexus 3064PQ)

16,000 (All other Nexus 3000 Series platforms)

8,000 (Nexus 3064PQ)

16,000 (All other Nexus 3000 Series platforms)

Not applicable

16,384 (Multicast is 0.)

16,384 (Multicast is 0.)

16,384 (Multicast is 0.)

16,384 (Multicast is 0.)

16,384 (Multicast is 0.)

16,384 (Multicast is 0.)

104,000 - Default system routing mode (hash table and there will be more collisions after 80%)

Not applicable

IPv6 host routes

8,000

8,000

Not applicable

4,096 (4096 is reserved for multicast.)

4,096 (4096 is reserved for multicast.)

4,096 (4096 is reserved for multicast.)

4,096 (4096 is reserved for multicast.)

4,096 (4096 is reserved for multicast.)

4,096 (4096 is reserved for multicast.)

52,000 - Default system routing mode

Not applicable

IPv4 LPM routes (No IPv6 carving)

16,000 (with system urpf disabled) and 8192 (with system urpf enabled)

128,000 (with system urpf disabled)

64K (with system urpf enabled)

16,000 (with system urpf disabled) and 8K (with system urpf enabled)

15,360 (with system urpf disabled) and 7680 (with system urpf enabled)

15,360 (with system urpf disabled) and 7680 (with system urpf enabled)

15,360 (with system urpf disabled) and 7680 (with system urpf enabled)

15,360 (with system urpf disabled)

15,360 (with system urpf disabled)

15,360 (with system urpf disabled)

12,000 - Default system routing mode

Not applicable

IPv6 LPM routes (No IPv6 carving)

80,000 (with system urpf disabled)

20K (with system urpf enabled)

80,000 (with system urpf disabled)

20K (with system urpf enabled)

0 (with both, system urpf disabled and enabled)

Not applicable

Not applicable

Not applicable

Not applicable

6144 (with system urpf disabled)

6144 (with system urpf disabled)

6,000

6,144 (with system urpf disabled)

IPv6 LPM <=64 (no IPv6 carving)

8,000 (with system urpf disabled) and 4,000 (with system urpf enabled)

8,000 (with system urpf disabled) and 4,000 (with system urpf enabled)

8,000 (with system urpf disabled) and 4,000 (with system urpf enabled)

6,144 (with system urpf disabled) and 2,048 (with system urpf enabled)

6,144(with system urpf disabled) and 2,048 (with system urpf enabled)

6,144 (with system urpf disabled) and 2,048 (with system urpf enabled)

6,144 (with system urpf disabled)

6,144 (with system urpf disabled)

6,144 (with system urpf disabled)

6,144 (with system urpf disabled)

6,144 (with system urpf disabled)

IPv6 LPM >64 and <=127

8,000 (with system urpf disabled) and 4,000 (with system urpf enabled)

8,000 (with system urpf disabled) and 4,000 (with system urpf enabled)

Not applicable

256 (with system urpf disabled) and 128 (with system urpf enabled)

256 (with system urpf disabled) and 128 (with system urpf enabled)

256 (with system urpf disabled) and 128 (with system urpf enabled)

Not applicable

1024

1024

1024

1024

IPv4 LPM routes (IPv6 carve value 1024)

Not applicable

96,000 (with system urpf disabled)

12,000 (with system urpf disabled) and 6,000 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM routes (IPv6 carve value 1024)

Not applicable

5,000 (with system urpf disabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM <=64 (IPv6 carve value 1024)

Not applicable

Not applicable

6,000 (with system urpf disabled) and 2,000 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM >64 (IPv6 carve value 1024)

Not applicable

Not applicable

1,024 (with system urpf disabled) and 512 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv4 LPM routes (IPv6 carve value 2048)

Not applicable

64,000 (with system urpf disabled)

32,000 (with system urpf enabled)

8,000 (with system urpf disabled) and 4,000 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM routes (IPv6 carve value 2048)

Not applicable

5,000 (with system urpf disabled)

2,000 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM <=64 (IPv6 carve value 2048

Not applicable

Not applicable

4,000 (with system urpf disabled) and 2,000 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM >64 (IPv6 carve value 2048)

Not applicable

Not applicable

2,000 (with system urpf disabled) and 1,000 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv4 LPM routes (IPv6 carve value 3072)

Not applicable

32,000 (with system urpf disabled)

4,000(with system urpf disabled) and 2,000(with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM routes (IPv6 carve value 3072)

Not applicable

15,000 (with system urpf disabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM <=64 (IPv6 carve value 3072)

Not applicable

Not applicable

2,000 (with system urpf disabled) and 0 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM >64 (IPv6 carve value 3072)

Not applicable

Not applicable

3,072(with system urpf disabled) and 0 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv4 LPM Routes(IPv6 carve value 4096)

Not applicable

Not applicable

0 (with both, system urpf disabled and enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM <=64 (IPv6 carve value 4096)

Not applicable

Not applicable

0 (with both, system urpf disabled and enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

IPv6 LPM >64 (IPv6 carve value 4096)

Not applicable

Not applicable

4,096 (with system urpf disabled) and 2,048 (with system urpf enabled)

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Layer 3 physical interfaces

Not applicable

Not applicable

64

64

64

64

24

24

24

24

24

Layer 3 SVI, subinterfaces EtherChannels

1024

1024

1024

1024

1024

1024

1024

1024

1024

1024

1024

MAC table size (non-vPC)

128,000

Not applicable

Not applicable

131,072

131,072

131,072

98000

98000

Not applicable

30,000

30,000

MAC table size (vPC)

40,000

Not applicable

Not applicable

131,072

131,072

131,072

98,000

98,000

98,000

30,000

30,000

MST instances

65

Not applicable

Not applicable

65

65

65

65

65

65

64

64

MTU

Not applicable

Not applicable

Not applicable

9,216

9,216

9,216

9,216

9,216

9,216

Not applicable

Not applicable

Multicast routes

4,000 (Nexus 3064PQ)

8,000 (All other Nexus 3000 Series platforms)

4,000 (Nexus 3064PQ)

8,000 (All other Nexus 3000 Series platforms)

Not applicable

8,000 routes

8,000 routes

8,000 routes

8,000 routes

8,000 routes

8,000 routes

8,000 routes

Not applicable

Number of switch port EtherChannels

64

Not applicable

Not applicable

32

32

32

10

10

10

32

32

Number of system logging destination ports

8

Not applicable

Not applicable

8

8

8

8

8

8

8

8

OSPF neighbors

Not applicable

Not applicable

128

128

128

128

128

128

128

128

128

OSPFv3

Not applicable

Not applicable

128

128

128

128

Not applicable

128

128

128

128

sFlow

64

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

SNMP Servers

Not applicable

Not applicable

Not applicable

8

8

8

8

8

8

10

10

SPAN sessions

2 active sessions

Not applicable

Not applicable

2 active sessions

2 active sessions

2 active sessions

2 active sessions

2 active sessions

2 active sessions

2 active sessions

2 active sessions

SSH

Not applicable

Not applicable

Not applicable

32

32

32

32

32

32

32

32

STP logical interfaces

9,000

Not applicable

Not applicable

9,000

9,000

9,000

9,000

9,000

9,000

12,000

12,000

TCAM entries for ACL

1,664 ingress and 1,024 egress

Not applicable

Not applicable

2,048 ingress and 512 egress

2,048 ingress and 512 egress

2,048 ingress and 512 egress

2,048 ingress and 512 egress

2,048 ingress and 512 egress

2,048 ingress and 512 egress

768 ingress and 768 egress

768 ingress and 768 egress

Telnet session

Not applicable

Not applicable

Not applicable

64

64

64

64

64

64

32

32

VRF

1,000

1,000

Not applicable

1,000

1,000

1,000

1,000

1,000

1,000

2,000

1,000

VRRP

255

255

Not applicable

255

255

255

255

255

255

255

255


Note

You can configure upto 2034 Layer 2 VNIs with 32 static ingress replication peers on the following Cisco Nexus 3000 Series platforms

  • C3132Q-V

  • C31108TC-V

  • C31108PC-V


Table 2. VXLAN Verified Scalability Limits

Feature

3132Q Platform Verified Limit

3132Q-V Platform Verified Limit

3172Q Platform Verified Limit

31108PC-V Platform Verified Limit

31108TC-V Platform Verified Limit

3264C-E Platform Verified Limit

VXLAN Flood and Learn

Layer 2 VNI

640

640

640

640

640

640

Underlay multicast groups

128

128

128

128

128

128

Total MAC addresses

64,000

64,000

64,000

64,000

64,000

64,000

VTEPS

128

128

128

128

128

128

Ingress replication peers

128

128

128

128

128

128

Ingress replication Layer 2 VNIs

384

384

384

384

384

384

MAC addresses for ingress replication

64,000

64,000

64,000

64,000

64,000

64,000

Local MAC (MAC on vpc leg)

64,000

64,000

64,000

64,000

64,000

Port VLAN translations in a switch

100

100

100

100

100

100

VXLAN BGP eVPN

Layer 2VNI

Not applicable

640

Not applicable

640

640

Not applicable

Layer 3 VNI/VRFs

Not applicable

160

Not applicable

160

160

Not applicable

Underlay multicast groups

Not applicable

320

Not applicable

320

320

Not applicable

VTEPs

Not applicable

32

Not applicable

32

32

Not applicable

Local MAC (MAC on vpc/access leg)

Not applicable

64,000

Not applicable

64,000

64,000

Not applicable

IPv4 host routes

Not applicable

8,000

Not applicable

8,000

8,000

Not applicable

IPv6 host routes

Not applicable

4,000

Not applicable

4,000

4,000

Not applicable

Overlay IPv4 LPM routes

Not applicable

8000

Not applicable

8000

8000

Not applicable

Overlay IPv6 LPM routes

Not applicable

4000

Not applicable

4000

4000

Not applicable

VXLAN BGP eVPN Ingress Replication

Layer 2 VNI

Not applicable

640

Not applicable

640

640

Not applicable

Underlay multicast groups

Not applicable

320

Not applicable

320

320

Not applicable

VTEPs

Not applicable

32

Not applicable

32

32

Not applicable

MAC addresses

Not applicable

64,000

Not applicable

64,000

64,000

Not applicable

IPv4 host routes

Not applicable

8000

Not applicable

8000

8000

Not applicable

IPv6 host routes

Not applicable

4000

Not applicable

4000

4000

Not applicable

Overlay IPv4 LPM routes

Not applicable

8000

Not applicable

8000

8000

Not applicable

Overlay IPv6 LPM routes

Not applicable

4000

Not applicable

4000

4000

Not applicable

Verified Topology Limits

The tables in this section list the verified scaling capabilities with all listed features enabled at the same time. The scale numbers listed here exceed those used by most customers in their topologies. These numbers are not the maximum verified values if each feature is viewed in isolation.


Note

  • The scale numbers in the Verified Topology Limits tables are for the Non-ALPM mode and the default IPv6 LPM carve value is 256 for all the platforms, except for the 3064 and the 3548P platforms.

  • For the verified topology scale numbers for 3132Q platform, refer to the scale numbers for 3132Q-X platform since they are identical for both these platforms.

  • All the scale numbers are with Unicast RPF disabled.

  • The verified topology scale numbers for the 3548P platform is based on the warp mode configuration with default LPM/Host/L2/multicast carving.


Table 3. Verified Topology Limits

Feature

3064 Platform Verified Limit

3132Q-V Platform Verified Limit

3132Q-X Platform Verified Limit

3172PQ Platform Verified Limit

31108PC-V Platform Verified Limit

31108TC-V Platform Verified Limit

3548P Platform Verified Limit

Active VLANs per switch

507 (MSTP)

507 (MSTP)

507 (MSTP)

507 (MSTP)

507 (MSTP)

507 (MSTP)

205(RSTP)

BFD neighbors

64

64

64

64

64

64

2

BGPv4 neighbors

Note 
These values are for vPC only

97

97

128

97

97

97

13

BGPv6

Note 
These values are for vPC only.

33

33

64

33

33

33

Not applicable

EtherChannel Members

18

16

16

18

10

16

12

ECMP

32-way

32-way

32-way

32-way

32-way

32-way

Not applicable

HSRP

100

100

100

100

100

100

50

HSRPv6

100

100

100

100

100

100

Not applicable

IGMP Snooping groups

1000

1000

1000

1000

1000

1000

1500

IPv4 hosts

4000

4000

4000

4000

4000

4000

4000

IPv6 host routes

1500 (with system urpf disabled)

1400

1400

1400

1400

1300

Not applicable

Layer 3 SVI, subinterfaces EtherChannels

360

355

355

355

355

355

100

MAC table size (vPC)

40,000

40,960

40,960

40,000

40,000

40,000

4600

MST instances

65

65

65

65

65

65

Not applicable

Multicast routes

2000

2000 routes (without TCAM carving)

2200 routes (without TCAM carving)

2000 routes

2000 routes

2000 routes

3200

Multicast NAT translations

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

400

Number of switch port EtherChannels

8

7

7

8

8

7

5

OSPF neighbors

8

9

9

9

8

8

3

OSPFv3

8

9

9

9

8

8

Not applicable

PBR entries

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

50

STP logical interfaces

395 (MST mode)

329 (MST mode)

329 (MST mode)

395 (MSTP)

395 (MSTP)

200 (MSTP)

415 (RSTP)

Unicast NAT translations

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

250

VRF

2

2

2

2

2

2

13

VRRP

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

50

VRRPv3

200

200

200

200

200

200

Not applicable

Table 4. Verified Topology Limits

Feature

3064 Platform Verified Limit

3132Q-V Platform Verified Limit

3132Q-X Platform Verified Limit

3172PQ Platform Verified Limit

31108PC-V Platform Verified Limit

31108TC-V Platform Verified Limit

3548P Platform Verified Limit

IPv4 LPM routes (No IPv6 carving)

4000

4000

4000

4000

4000

4000

2000

IPv6 LPM <=64

4000

4000

4000

4000

4000

4000

Not applicable

IPv6 LPM >64 and <=127

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Not applicable

Table 5. Verified Topology Limits

Feature

3064 Platform Verified Limit

3132Q-V Platform Verified Limit

3132Q-X Platform Verified Limit

3172PQ Platform Verified Limit

31108PC-V Platform Verified Limit

31108TC-V Platform Verified Limit

VXLAN Flood and Learn

Overlay MAC addresses

Not applicable

Not applicable

2000

Not applicable

Not applicable

Not applicable

Layer 2 VNI

Not applicable

Not applicable

200

Not applicable

Not applicable

Not applicable

Underlay multicast groups

Not applicable

Not applicable

100

Not applicable

Not applicable

Not applicable

Ingress replication peers

Not applicable

Not applicable

100

Not applicable

Not applicable

Not applicable

Ingress replication Layer 2 VNIs

Not applicable

Not applicable

100

Not applicable

Not applicable

Not applicable