Verified Scalability for Cisco Nexus 6000 Series NX-OS Release 6.0(2)N2(1)
Verified Scalability for Cisco Nexus 6000 Series NX-OS Release 6.0(2)N2(1)
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Verified Scalability for Cisco Nexus 6000 Series NX-OS Release 6.0(2)N2(1)

Verified Scalability for Cisco Nexus 6000 Series NX-OS Release 6.0(2)N2(1)

This chapter contains the following sections:

Overview of Verified Scalability

This document lists the Cisco verified scalability limits.


Note


The following scaling capabilities apply to Cisco Nexus 6000 Series switches. For example, 6001 and 6004.


In the following tables, the Verified Topology column lists the verified scaling capabilities with all listed features enabled at the same time. The numbers listed here exceed those 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.

The Verified Maximum column lists the maximum scale capability tested for the corresponding feature individually. This number is the absolute maximum currently supported by the Cisco NX-OS Release software for the corresponding feature. If the hardware is capable of a higher scale, future software releases may increase this verified maximum limit.

Verified Scalability for a Layer 2 Switching Deployment

This table lists the verified scalability for a Layer 2 switching deployment.

Table 1 Verified Scalability for a Layer 2 Switching Deployment

Feature

Verified Topology

Verified Maximum

Active VLANs/VSANs per switch

4000

4013 (31 are reserved for VSANs, and the remaining are for VLANs.)

VLAN/VSAN ID Space

4013

4013 Unreserved Space

Logical Interfaces1

96,000 (MST)

2

64,000 (96,000 MST)

3

VLAN ACLs (VACLs)

128 (10 Unique VACLs)

1024 (512 unique VACLs with up to 1024 ACE entries across all VACLs)

Maximum interfaces per EtherChannel

16

16

IGMP Snooping Groups

4000 (in FEX deployments)

8000 (in non-FEX deployments)

4000 (in FEX deployments)

16,000 (in non-FEX deployments)

Maximum FEXs per Switch

48

4

48

5

Maximum FEXs dual-homed to a vPC Switch Pair

48

48

MAC Table Size (Entries)

64,000

115,000

Number of Switchport Etherchannels

48

96 (Single member port-channel for 40G ports)

384 (Single member port-channel for 10G ports)

64 (Multi member port-channel)

Number of HIF FEX port channels/vPCs (across the maximum number of FEXs)

576

576

SPAN Sessions

4 active sessions

32 source VLANs as a RX source

16 active sessions

32 source VLANs as a RX source

SVIs

2

256

FabricPath VLANs

40006

4000

FabricPath Switch IDs

128

128

FabricPath Multicast Trees

2

2

Number of FabricPath Topologies

2

2

Number of FabricPath Core Port-Channels

4 core links with 4 ports each

16

FEX Host Interface Storm Control

1936 7

1936

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 32,000 STP logical interfaces are verified in the unified fabric topology.
3 16,000 PV scaling number applies to PVST and non-STP modes. For MST mode only, the verified maximum for PV scaling is 96,000.
4 48 maximum FEXs per switch applies to the Cisco Nexus 6004 only. The limit is 24 maximum FEXs per switch for the Cisco Nexus 6001.
5 48 maximum FEXs per switch applies to the Cisco Nexus 6004 only. The limit is 24 maximum FEXs per switch for the Cisco Nexus 6001.
6 FabricPath VLANs are verified in the unified fabric topology
7 This is the target maximum number that HIF-SC can support. Beyond this number, NIF-SC is recommended for deployment.

Verified Scalability for a Layer 2 Switching and Layer 3 Routing Deployment

This table contains the verified scalability for a Layer 2 switching and Layer 3 routing deployment.

Note


The currently tested values do not provide an indication for the maximum scalability of the control plane. These numbers vary based on the load of the system in terms of routing protocols, timers settings, and other values. Proof of concept testing should be used to determine the scalability of a given feature for your environment.


Table 2 Verified Scalability for a Layer 2 Switching and Layer 3 Routing Deployment

Feature

Verified Topology

Verified Maximum

Active VLANs/VSANs per Switch

1000

8

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

VLAN/VSAN ID Space

4013 Unreserved space

4013 Unreserved space

STP Instances

16,000

16,000

Maximum Interfaces per EtherChannel

16

16

IGMP Snooping Groups

4000 (in FEX deployments)

8000 (in non-FEX deployments)

4000 (in FEX deployments)

16,000 (in non-FEX deployments)

Maximum FEXs per Switch

24

24

Maximum FEXs Dual-homed to a vPC Switch Pair

9

24

10

24

11

MAC Table Size (Entries)

32,000

12

64,000

13

Number of FEX Port Channels/vPCs (across the maximum number of FEXs)

500

768

SPAN Sessions

4 active sessions

32 source VLANs as an RX source

16 active sessions

32 source VLANs as an RX source

Number of SVIs

256

256

Dynamic IPv4 Routes

14

8000

24,000

Dynamic IPv6 Routes

15

4000

16

6000

Multicast IPv4 Routes

17

4000

8000

ARPs (IPv4 Hosts)

18

32,000

64,000

IPv6 Hosts

16,000

32,000

VRFs

25

1000

RACLs

64 Ingress RACLs with up to 1152 ACE entries across all the RACLs

896 Ingress RACLs with up to 1152 ACE entries across all the RACLs

HSRP Groups

19

256

500

VRRP Groups

20

256

500

BFD sessions over L3-intf for CE mode

8 sessions (250ms intvl, 750ms dead-intvl)

30 (250ms intvl, 750ms dead-intvl)

BFD sessions over SVI for L2MP mode

64 (250ms intvl, 750ms dead-intvl)

64 (250ms intvl, 750ms dead-intvl)

PBR IPv4

95

95

PBR IPv6

95

95

8 4,013 VLANs are verified in Layer 2 switching, Fibre Channel;, and FCoE topologies.
9 FEXs are verified in the Layer 2 topology
10 24 FEXs are verified in the Layer 2 topology.
11 24 FEXs are verified in the Layer 2 topology.
12 128,000 entries are reserved for unicast MAC entries and 128,000 entries are reserved for IP host routes.
13 128,000 entries are reserved for unicast MAC entries and 128,000 entries are reserved for IP host routes.
14 The maximum number of entries that can be supported is 24,000. This table is shared between IPv4 and IPv6. An IPv4 route takes up one entry in the table and an IPv6 route takes up four entries.
15 The maximum number of entries that can be supported is 24,000. This table is shared between IPv4 and IPv6. An IPv4 route takes up one entry in the table and an IPv6 route takes up four entries.
16 With no IPv4, the number increases to 6000.
17 This includes (*,G) entries, (S,G) entries, and the entries required for vPC with bind-vrf configured. When bind-vrf is configured, each (*,G) and (S,G) entry is replicated.
18 The maximum number of hosts supported is listed under ARPs. This includes IPv4 and IPv6 hosts. IPv4 hosts take up one entry and IPv6 hosts take up 2 entries in hardware. So, for the verified limit, the switch supports one of the following: 32,000 IPv4 hosts and 0 IPv6 hosts, 16,000 IPv6 hosts and 0 IPv4 hosts, or a combination of IPv4 and IPv6 hosts.
19 The limit of the table that holds the Router MAC and Virtual MAC entries that determines whether the packet needs to be bridged or routed is 500 entries. The Virtual MAC entries can be shared across Layer 3 interfaces. So, we recommend that you configure the same group ID across all or multiple Layer 3 interfaces/SVIs. If multiple group IDs are configured on an Layer 3 interface, then we recommend that you configure the same set of group IDs across all or multiple Layer 3 interfaces. This way, HSRP/VRRP can be supported on more interfaces. Please refer to the unicast configuration guide for more information.
20 The limit of the table that holds the Router MAC and Virtual MAC entries for determining packet routing or switching is 500 entries. The Virtual MAC entries can be shared across Layer 3 interfaces. So, we recommend that you configure the same group ID across all or multiple Layer 3 interfaces/SVIs. If multiple group IDs are configured on an Layer 3 interface, then we recommend that you configure the same set of group IDs across all or multiple Layer 3 interfaces. This way, HSRP/VRRP can be supported on more interfaces. Please refer to the unicast configuration guide for more information.

Verified Scalability for a Layer 3 Aggregation Routing Deployment

This table lists the verified scalability for a Layer 3 aggregation routing deployment.

Table 3 Verified Scalability for a Layer 3 Aggregation Routing Deployment

Feature

Verified Topology

Verified Maximum

Active VLANs/VSANs per Switch

4000

21

4000

VLAN/VSAN ID Space

4013 unreserved space

4013 unreserved space

STP Instances

64,000

64,000

Maximum Interfaces per EtherChannel

16

16

IGMP Snooping Groups

8000 (in non-FEX deployments)

16,000 (in non-FEX deployments)

MAC Table Size

64,000

22

115,000

23

SPAN Sessions

4 active sessions

32 source VLANs as an RX source

16 active sessions

32 source VLANs as an RX source

SVIs

1000

4000

Dynamic IPv4 Routes

24

8000

24,000

Dynamic IPv6 Routes

25

4000

26

6000

Multicast IPv4 Routes

27

8000

16,000

RACLs

64 ingress RACLs with up to 1,152 ACE entries across all of the RACLs.

512 ingress RACLs with up to 1,152 ACE entries across all of the RACLs.

VRFs

25

1,000

ARPs (IPv4 Hosts)

28

64,000

64,000

IPv6 Hosts

29

10,000

30

32,000

IGP Peers

64

100

HSRP Groups

31

1721 (911 IPv4, 810 IPv6)

1721 (911 IPv4, 810 IPv6)

VRRP Groups

32

500

500

FabricPath Switch IDs

128

128

FabricPath Multicast Trees

2

2

Number of FabricPath Topologies

2

2

Number of FabricPath Core Links

32

32

PBR IPv4

110

110

PBR IPv6

110

110

BFD sessions over L3-intf for CE Mode

100 sessions (250ms intvl, 750ms dead-intvl)

100 sessions (250ms intvl, 750ms dead-intvl)

BFD sessions over SVI for L2MP mode

64 sessions (250ms intvl, 750ms dead-intvl)

64 sessions (250ms intvl, 750ms dead-intvl)

21 4,013 VLANs are verified in Layer 2 switching, Fibre Channel, and FCoE topologies.
22 128,000 entries are reserved for Unicast MAC entries, and 128,000 entries are reserved for IP host routes.
23 128,000 entries are reserved for Unicast MAC entries, and 128,000 entries are reserved for IP host routes.
24 The maximum number of entries that can be supported is 24,000. This table is shared between IPv4 and IPv6. An IPv4 route takes up one entry in the table and an IPv6 route takes up four entries.
25 The maximum number of entries that can be supported is 24,000. This table is shared between IPv4 and IPv6. An IPv4 route takes up one entry in the table and an IPv6 route takes up four entries.
26 Entries shared between IPv4, IPv6 network routes.
27 This includes (*,G) entries, (S,G) entries, and the entries required for vPC with bind-vrf configured. When bind-vrf is configured, each (*,G) and (S,G) entry is replicated. This includes (*,G) entries, (S,G) entries, and IGMP-snooping entries combined.
28 The maximum number of hosts supported is listed under ARPs. This includes IPv4 and IPv6 hosts. IPv4 hosts take up one entry and IPv6 hosts take up 2 entries in hardware. So, for the verified limit, the switch supports one of the following: 64,000 IPv4 hosts and 0 IPv6 hosts, 16,000 IPv6 hosts and 0 IPv4 hosts, or a combination of IPv4 and IPv6 hosts.
29 The maximum number of hosts supported is listed under ARPs. This includes IPv4 and IPv6 hosts. IPv4 hosts take up one entry and IPv6 hosts take up 2 entries in hardware. So, for the verified limit, the switch supports one of the following: 64,000 IPv4 hosts and 0 IPv6 hosts, 16,000 IPv6 hosts and 0 IPv4 hosts, or a combination of IPv4 and IPv6 hosts.
30 Entries shared between IPv4 multicast, IPv4, IPv6 host routes .
31 The limit of the table that holds the Router MAC and Virtual MAC entries that determine whether the packet needs to be bridged or routed is 500 entries. The Virtual MAC entries can be shared across Layer 3 interfaces. So we recommend that you configure the same group ID across all or multiple Layer 3 interfaces/SVIs. If multiple group IDs are configured on a Layer 3 interface, then we recommend that you configure the same set of group IDs across all or multiple Layer 3 interfaces. This way, HSRP/VRRP can be supported on more interfaces. Please refer to the Unicast Routing Configuration Guide for more information.
32 The limit of the table that holds the Router MAC and Virtual MAC entries for determining packet routing or switching is 500 entries. The Virtual MAC entries can be shared across Layer 3 interfaces. So we recommend that you configure the same group ID across all or multiple Layer 3 interfaces/SVIs. If multiple group IDs are configured on a Layer 3 interface, then we recommend that you configure the same set of group IDs across all or multiple Layer 3 interfaces. This way, HSRP/VRRP can be supported on more interfaces. Please refer to the Unicast Routing Configuration Guide for more information.

Verified Scalability for a Layer 2 Switching and Unified Fabric (FCoE) Deployment

This table lists the verified scalability for a Layer 2 switching and unified fabric (FCoE) deployment.

Table 4 Verified Scalability for a Layer 2 Switching and Unified Fabric (FCoE) Deployment

Feature

Verified Topology

Verified Maximum

Active VLANs/VSANs per switch

4,013

4,013 (31 are set reserved for VSANs and the remaining are for VLANs)

VLAN/VSAN ID Space

4,013 Unreserved Space

4,013 Unreserved Space

Logical Interfaces

33

32,000

32,000

IGMP Snooping Groups

4,000 (in FEX deployments)

8,000 (in non-FEX deployments)

4,000 (in FEX deployments)

16,000 (in non-FEX deployments)

Maximum FEXs per Cisco Nexus 6000 Series Switch

9

24

Maximum FEXs Dual Homed to a vPC Cisco Nexus 6000 Series Switch Pair

24

24

MAC Table Size

32,000 unicast entries

34

115,000 entries

35

Number of Switchport EtherChannels

8

384

SPAN Sessions

4 active sessions

32 source VLANs as a RX source

16 active sessions

32 source VLANs as a RX source

Number of FEX Port Channels/vPCs (across the maximum number of FEXs)

288

768

FabricPath VLANs

4,000

4,000

FabricPath Switch IDs

128

128

FabricPath Multicast Trees

2

2

Number of FabricPath Topologies

2

2

Number of FabricPath Core Links

2

16

Number of FabricPath Topologies

1

1

Number of FabricPath Core Links

2

16

FLOGIs or FDISCs per NPV Port Group

180

255

Zone Sets per Switch

32

500

Zone Members per Physical Fabric (includes all VSANs)

1,280

`

8,000

Zones per Switch (includes all VSANs)

640

8,000

Maximum Diameter of a SAN Fabric

7 hops

12

FSPF Interface Instances per Switch

192

3,072

ISL Instances per Switch

6

96

VFC Interfaces

288

288

Maximum FCIDs Allocated

576

2,048

Fibre Channel Flows

32

32

33 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.
34 128,000 entries are reserved for unicast MAC entries and 128,000 entries are reserved for IP host routes.
35 128,000 entries are reserved for unicast MAC entries and 128,000 entries are reserved for IP host routes.

Verified Scalability for Multicast Routing

This table lists the verified scalability for multicast routing.

Table 5 Verified Scalability for Multicast Routing

Feature

Parameter

Verified Maximum

Protocol Independent Multicast (PIM)

Number of neighbors

500

Number of neighbors/total routes per system with aggressive hello timers (5 seconds)

16/4,000

Multicast Source Discovery Protocol (MSDP)

Number of MSDP Source-Active (SA) cache entries

6,000

Verified Scalability for Unicast Routing

This table lists the verified scalability for unicast routing.

Table 6 Verified Scalability for Unicast Routing

Feature

Parameter

Verified Maximum

OSPFv2

Number of active interfaces

256

Number of passive interfaces

256

Number of neighbors/total routes with aggressive timers (1 sec/ 3 sec)

16/6,000

OSPFv3

Number of active interfaces

256

Number of passive interfaces

256

EIGRP

Number of active interfaces

50

BGP

Number of peers (iBGP and eBGP, active)

256

Number of AS path entries

512

Number of prefix-list entries in a single prefix-list

10,000

HSRP

Number of groups with aggressive timers (1 sec/3 sec)

500