Chapter 1. Overview

This guide contains the maximum verified scalability limits for ACI parameters for the Cisco APIC Release 3.2(9), Cisco Multi-Site Release 1.2(5), and Cisco Nexus 9000 Series ACI-Mode Switches, Release 13.2(9). These values are based on a profile where each feature was scaled to the numbers specified in the tables. These numbers do not represent the theoretically possible ACI fabric scale.

- General Scalability Limits

- Multiple Fabric Options Scalability Limits

- Cisco ACI Multi-Site Scalability Limits

- Fabric Topology, SPAN, Tenants, Contexts (VRFs), External EPGs, Bridge Domains, Endpoints, and Contracts Scalability Limits

- VMM Scalability Limits

- Layer 4 - Layer 7 Scalability Limits

- AD, TACACS, RBAC Scalability Limits

- QoS Scalability Limits

General Scalability Limits

- L2 Fabric: In Legacy mode there is no routing, L3 context, nor contract enabled in the L2 fabric profile.  A tenant in this profile does not need to be mapped to one dedicated ACI tenant.  A tenant can be represented by a set of EPGs instead. To improve the load sharing among APIC controller nodes, you must distribute EPGs and BDs across an ACI tenant.

- L3 Fabric: The ACI L3 fabric solution provides a feature-rich highly scalable solution for public cloud and large enterprise. With this design, almost all supported features are deployed at the same time and are tested as a solution. The scalability numbers listed in this section are multi-dimensional scalability numbers. The fabric scalability numbers represent the overall number of objects created on the fabric. The per-leaf scale numbers are the objects created and presented on an individual leaf switch. The fabric level scalability numbers represent APIC cluster scalability and the tested upper limits. Some of the per-leaf scalability numbers are subject to hardware restrictions. The per-leaf scalability numbers are the maximum limits tested and supported by leaf switch hardware. This does not necessarily mean that every leaf switch in the fabric was tested with maximum scale numbers.

- Stretched Fabric: Stretched fabric allows multiple fabrics (up to 3) distributed in multiple locations to be connected as a single fabric with a single management domain. The scale for the entire stretched fabric remains the same as for a single site fabric. For example a L3 stretched fabric will support up to 200 leaf switches total which is the maximum number of leaf switches supported on a single site fabric. Parameters only relevant to stretched fabric are mentioned in the tables below.

- Multi-Pod: Multipod enables provisioning a more fault-tolerant fabric comprised of multiple pods with isolated control plane protocols. Also, multipod provides more flexibility with regard to the full mesh cabling between leaf and spine switches. For example, if leaf switches are spread across different floors or different buildings, multipod enables provisioning multiple pods per floor or building and providing connectivity between pods through spine switches.

Multipod uses a single APIC cluster for all the pods; all the pods act as a single fabric. Individual APIC controllers are placed across the pods but they are all part of a single APIC cluster.

- Multi-Site: Multi-Site is the architecture interconnecting and extending the policy domain across multiple APIC cluster domains. As such, Multi-Site could also be named as Multi-Fabric, since interconnects separate Availability Zones (Fabrics) each deployed as a single Pod in this release and managed by an independent APIC controller cluster. An ACI Multi-Site policy manager is part of the architecture and is used to communicate with the different APIC domains to simplify the management of the architecture and the definition of inter-site policies.

NOTE: The maximum number of leaf switches overall is 400 per fabric scale. The maximum number of physical ports is 19,200 per fabric. The maximum number of remote leaf switches is 40 per fabric

Feature

L2 Fabric

L3 Fabric

Large L3 Fabric

Number of APIC controllers

Note

* denotes preferred cluster size.

While the higher number of controllers is supported, the preferred size is based on the number of leaf switches in the environment.

3* or 4 node APIC cluster

3* or 4 node APIC cluster

5*, 6, or 7 node APIC cluster

Number of leaf switches

80

80

300 for 5- or 6-node cluster

400 for 7-node cluster

Number of spine switches

Maximum spines per pod: 6. Total spines 24.

Maximum spines per pod: 6. Total spines 24.

Maximum spines per pod: 6. Total spines 24.

Number of FEXs

N/A

20 per leaf switch, 576 ports/leaf switch, 650 per fabric

N/A

Number of tenants

N/A

1,000

3,000

Number of Layer 3 (L3) contexts (VRFs)

N/A

1,000

3,000

Number of contracts/filters

N/A

- 10,000 contracts

- 10,000 filters

- 10,000 contracts

- 10,000 filters

Number of endpoint groups (EPGs)

21,000 ( 500 maximum per tenant, or 4,000 if there is a single tenant in a fabric )

15,000 (500 maximum per tenant, or 4,000 if there is a single tenant in a fabric)

15,000 (500 maximum per tenant, or 4,000 if there is a single tenant in a fabric)

Number of Isolation enabled EPGs

400

400

400

Number of bridge domains (BDs)

21,000

15,000

15,000

Number of BGP + number of OSPF sessions + EIGRP (for external connection)

N/A

3,000

3,000

Number of Multicast groups

N/A

8,000

8,000

Number of Multicast groups per VRF

N/A

8,000

8,000

Number of static routes to a single SVI/VRF

N/A

5,000

10,000

Number of static routes on a single leaf switch

N/A

5,000

10,000

Number of vCenters

N/A

- 200 VDS

- 50 AVS

- 50 Cisco ACI Virtual Edge

- 200 VDS

- 50 AVS

- 50 Cisco ACI Virtual Edge

Number of Service Chains

N/A

1,000

1,000

Number of L4 - L7 devices

N/A

30 managed or 50 unmanaged physical HA pairs, 1,200 virtual HA pairs (1,200 maximum per fabric)

30 managed or 50 unmanaged physical HA pairs, 1,200 virtual HA pairs (1,200 maximum per fabric)

Number of ESXi hosts - VDS

N/A

3,200

3,200

Number of ESXi hosts - AVS

N/A

3,200 (Only 1 AVS instance per host)

3,200 (Only 1 AVS instance per host)

Number of ESXi hosts - AVE

N/A

3,200 (Only 1 AVE instance per host)

3,200 (Only 1 AVE instance per host)

Number of VMs

N/A

Depends upon server scale

Depends upon server scale

Number of configuration zones per fabric

30

30

30

Number of BFD sessions per leaf switch

256

Minimum BFD timer required to support this scale:

- minTx:50

- minRx:50

- multiplier:3

256

Minimum BFD timer required to support this scale:

- minTx:50

- minRx:50

- multiplier:3

256

Minimum BFD timer required to support this scale:

- minTx:50

- minRx:50

- multiplier:3

Multi-Pod

NOTE: * is preferred cluster size

3* or 4 node APIC cluster,6 pods, 80 leaf switches overall

3* or 4 node APIC cluster,6 pods, 80 leaf switches overall

- 5* or 6 node APIC cluster,6 pods, 200 leaf switches max per pod, 300 leaf switches max overall

- 7 node APIC cluster,12 pods, 200 leaf switches max per pod, 400 leaf switches max overall

L3 EVPN Services over Fabric WAN - GOLF (with and without OpFlex)

N/A

1,000 VRFs, 60,000 routes in a fabric

1,000 VRFs, 60,000 routes in a fabric

Layer 3 Multicast routes

N/A

8,000

8,000

Number of Routes in Overlay-1 VRF

1,000

1,000

1,000

Multiple Fabric Options Scalability Limits

Configurable Options

Per Leaf Scale

Per Fabric Scale

Stretched Fabric

Maximum number of fabrics that can be a stretched fabric

N/A

3

Maximum number of Route Reflectors

N/A

6

Multi-Pod

Maximum number of PODs

N/A

12

Maximum number of leaf switches per POD

N/A

200

Maximum number of leaf switches overall

N/A

400

Cisco ACI Multi-Site Scalability Limits

Stretched vs. non Stretched—Stretched in multi-site means the Multi-Site fabric has stretched objects such as EPG, BD, VRF or Subnet across multiple sites or has cross site contracts between EPGs. The scale parameters for this scenario is described in the "Stretched (Multi-Site)" column. Non-Stretched in Multi-Site means all objects such as EPG, contract, and BD are local to a site only and do not cross the local-site boundary. The scale parameters for this scenario is described in the "Non-Stretched (APIC)" column in the table below:

Note

For maximum scale Multi-Site configurations with many features enabled simultaneously, it is recommended that those configurations be tested in a lab prior to deployment.

Multi-Site General Scalability Limits

Configurable Options

Scale

Sites

10

Pods per site

12

Leaf switches per site

200

Multi-Site Object Scale

Configurable Options

Scale

Policy Objects per Schema

500

Templates per Schema

5

Application Profiles per Schema

200

Number of Schemas

60

Number of Templates

300

Multi-Site Orchestrator Users (nonparallel*)

*Multi-Site Orchestrator processes requests sequentially from multiple users even if they are deploying different schemas.

50

Multi-Site Scalability Limits for Stretched Objects

Scaling Item

Stretched (Multi-Site)

Non-Stretched (APIC)

Tenants

300

2,500

VRFs

800

3,000

BDs

3,000

10,000

Contracts

3,000

2,000

End Points

100,000

150,000 including:

- 100,000 - stretched from other sites

- 50,000 - locally learned in site-local

EPGs

3,000

10,000

Isolated EPGs

400

400

MicroSegment EPGs

400

400

IGMP Snooping

8,000

8,000

L3Out external EPGs

500

2,400

Subnets

8,000

10,000

Number of L4-L7 Logical devices

400

Refer to L4-L7 Site Local Scalability Numbers

Number of graph instances

250

Refer to L4-L7 Site Local Scalability Numbers

Number of device clusters per tenant

10

Refer to L4-L7 Site Local Scalability Numbers

Number of interfaces per device cluster

Any

Refer to L4-L7 Site Local Scalability Numbers

Number of graph instances per device cluster

125

Refer to L4-L7 Site Local Scalability Numbers

Fabric Topology, SPAN, Tenants, Contexts (VRFs), External EPGs, Bridge Domains, Endpoints, and Contracts Scalability Limits

The table below shows the mapping of the "ALE/LSE Type" to the corresponding TOR switches. This information is helpful to determine which TOR switch is affected when we use the terms ALE v1, ALE v2, LSE or LSE2 in remaining sections.

Note

In the following table, the N9K-C9336C-FX2 switch is listed as LSE for scalability limits purpose only. The switch is capable of supporting LSE2 platform features, consult specific feature documentation for full list of supported devices.

ALE/LSE Type

ACI-Supported TORs

ALE v1

- N9K-C9396PX + N9K-M12PQ

- N9K-C93128TX + N9K-M12PQ

- N9K-C9396TX + N9K-M12PQ

ALE v2

- N9K-C9396TX + N9K-M6PQ

- N9K-C93128TX + N9K-M6PQ

- N9K-C9396PX + N9K-M6PQ

- N9K-C9372TX 64K

- N9K-C9332PQ

- N9K-C9372PX

LSE

N9K-C93108TC-EX + N9K-C93180YC-EX + N9K-C9336C-FX2

LSE2

N9K-C93108TC-FX + N9K-C93180YC-FX + N9K-C9348GC-FXP

Note

Unless explicitly called out, LSE represents both LSE and LSE2 and ALE represents both ALE v1 and ALE v2 in the rest of this document.

Configurable Options

Per Leaf Scale

Per Fabric Scale

Fabric Topology

Number of PCs, vPCs

320 (with FEX HIF)

N/A

Number of encaps per access port, PC, vPC (non FEX HIF)

3,000

N/A

Number of encaps per FEX HIF, PC, vPC

20

N/A

Number of member links per PC, vPC*

*vPC total ports = 32, 16 per leaf

16

N/A

Number of ports x VLANS (global scope and no FEX HIF)

64,000

168,000 (when using legacy BD mode)

N/A

Number of ports x VLANS (FEX HIFs and/or local scope)

For ALE v1 and v2: 9,000

For LSE and LSE2:

10,000

N/A

Number of static port bindings

For ALE v1 and v2: 30,000

For LSE and LSE2:

60,000

400,000

Number of VMACs

For ALE v2: 255

For LSE and LSE2: 510

N/A

STP

All VLANs

N/A

Mis-Cabling Protocol (MCP)

256 VLANs per interface

2,000 logical ports (port x VLAN) per leaf

N/A

Maximum number of endpoints (EPs)

Default profile (Dual stack)—

- For ALE v1 and v2:

- MAC: 12,000

- IPv4: 12,000 or

- IPv6: 6,000 or

- IPv4: 4,000

IPv6: 4,000

Default Profile or High LPM Profile—

- For LSE or LSE2:

- MAC: 24,000

- IPv4: 24,000

- IPv6: 12,000

IPv4 Scale profile—

- For LSE and LSE2:

- MAC: 48,000

- IPv4: 48,000

- IPv6: Not supported

- For ALE v1 and v2: Not supported

High Dual Stack Scale profile—

- For LSE:

- MAC: 64,000

- IPv4: 64,000

- IPv6: 24,000

- For LSE2:

- MAC: 64,000

- IPv4: 64,000

- IPv6: 48,000

- For ALE v1 and v2: Not supported

16-slot and 8-slot modular spine switches:

Max. 450,000 Proxy Database Entries in the fabric, which can be translated into any one of the following:

- 450,000 MAC-only EPs (each EP with one MAC only)

- 225,000 IPv4 EPs (each EP with one MAC and one IPv4)

- 150,000 dual-stack EPs (each EP with one MAC, one IPv4, and one IPv6)

The formula to calculate in mixed mode is as follows:

#MAC + #IPv4 + #IPv6 <= 450,000

NOTE: Four fabric modules are required on all spines in the fabric to support above scale.

4-slot modular spine switches:

Max. 360,000 Proxy Database Entries in the fabric, which can be translated into any one of the following:

- 360,000 MAC-only EPs (each EP with one MAC only)

- 180,000 IPv4 EPs (each EP with one MAC and one IPv4)

- 120,000 dual-stack EPs (each EP with one MAC, one IPv4, and one IPv6)

The formula to calculate in mixed mode is as follows:

#MAC + #IPv4 + #IPv6 <= 360,000

NOTE: Four fabric modules are required on all spines in the fabric to support above scale.

Fixed spine switches:

Max. 180,000 Proxy Database Entries in the fabric, which can be translated into any one of the following:

- 180,000 MAC-only EPs (each EP with one MAC only)

- 90,000 IPv4 EPs (each EP with one MAC and one IPv4)

- 60,000 dual-stack EPs (each EP with one MAC, one IPv4, and one IPv6)

The formula to calculate in mixed mode is as follows:

#MAC + #IPv4 + #IPv6 <= 180,000

Number of MAC EPGs

N/A

125

Number of Multicast Groups

Default or High LPM profile (Dual stack): 8,000

IPv4 Scale profile: 8,000

High Dual stack Scale profile: 512

8,000

Number of Multicast Groups per VRF

8,000

8,000

Number of IPs per MAC

4,096

4,096

SPAN

ALE based ToRs:

- 4 uni-directional or 2 bi-directional access/tenant sessions

- 4 uni-directional or 2 bi-directional fabric sessions

LSE based ToRs:

- 8 uni-directional or 4 bi-directional sessions (fabric, access, or tenant)

N/A

Number of ports per SPAN session

ALE-based TORs:

- All leaf access ports could be in one session

- All leaf fabric ports could be in one session

LSE/LSE2-based TORs:

- 30 – total number of unique ports (fabric + access) across all types of SPAN sessions

N/A

Number of source EPGs in tenant SPAN sessions

Note

The numbers listed in this row assume that only tenant SPAN is configured.

If both, Access and Tenant SPAN are configured, the following formula applies for both ingress and egress SPAN:

E + P + E*P + EPP + v6FePP + 0.5*v4FePP <= 230

Where:

- E— Number of source EPGs in Tenant SPAN

- P—Number of source Ports in access SPAN without any filters

- EPP—Number of (Epg,Port) Pairs in access SPAN with EPG filter only (no filter group)

- v4FePP—Number of (v4 filter entry, Port) Pairs in access SPAN with filter group

- v6FePP—Number of (v6 Filter entry, Port) Pairs in access SPAN with filter group

ALE-based ToR switches:

- 230 ingress direction + 50 egress direction

LSE-based ToR switches:

- 230 bidirectional

- 460 unidirectional (230 ingress + 230 egress)

N/A

Common pervasive gateway

256 virtual IPs per Bridge Domain

N/A

Maximum number of Data Plane policers at interface level

ALE:

- 64 ingress policers

- 64 egress policers

LSE and LSE2:

- 7 ingress policers

- 3 egress policers

N/A

Maximum number of Data Plane policers at EPG and interface level

128 ingress policers

N/A

Maximum number of interfaces with Per-Protocol Per-Interface (PPPI) CoPP

63

N/A

Maximum number of TCAM entries for Per-Protocol Per-Interface (PPPI) CoPP

256

One PPPI CoPP configuration may use more than one TCAM entry. The number of TCAM entries used for each configuration varies in each protocol and leaf platform. Use vsh_lc -c 'show system internal aclqos pppi copp tcam-usage' command to check on LSE/LSE2 platforms

N/A

Maximum number of SNMP trap receivers

10

10

First Hop Security (FHS)*

With any combination of BDs/EPGs/EPs within the supported limit

2,000 endpoints

1,000 bridge domains

N/A

Maximum number of Q-in-Q tunnels

(both QinQ core and edge combined)

1,980

N/A

Maximum number of TEP-to-TEP atomic counters

(tracked by 'dbgAcPathA' object)

N/A

1,600

Tenants

Number of Contexts (VRFs) per tenant

ALE: 50

LSE: 128

ALE: 50

LSE: 128

Number of application profiles per tenant (or per Context (VRF))

N/A

N/A

Contexts (All numbers applicable to dual stack unless explicitly called out)

Maximum number of Contexts (VRFs)

ALE: 400

LSE and LSE2: 800

3,000

Maximum ECMP (equal cost multipath) for BGP best path

16

N/A

Maximum ECMP (equal cost multipath) for OSPF best path

64

N/A

Maximum ECMP (equal cost multipath) for Static Route best path

64

N/A

Number of isolated EPGs

N/A

400

Border Leafs per L3 Out

N/A

12

Maximum number of vzAny Provided Contracts

Shared services: Not supported

Non-shared services: 70 per Context (VRF)

N/A

Maximum number of vzAny Consumed Contracts

Shared services: 16 per Context (VRF)

Non-shared services: 70 per Context (VRF)

N/A

Number of service graphs per device cluster

N/A

500

L3 Out per context (VRF)

--

400

Maximum number of Routed, Routed Sub-interface, or SVIs per L3 Out

- 8 for Routed and Routed sub-interface

- 1,000 for SVI

- 12 for Routed and Routed sub-interface

- 1,000 for SVI

Maximum number of BGP neighbors

400

3,000

Maximum number of OSPF neighbors

300

(Maximum number of VRFs with an l3out where OSPF is the only routing protocol enabled, cannot exceed 142)

N/A

Maximum number of EIGRP neighbors

16

N/A

Maximum number of IP Longest Prefix Matches (LPM) entries

Note

The total of (# of IPv4 prefixes) + 2*(# of IPv6 prefixes) must not exceed the scale listed for IPv4 alone

Default profile (Dual stack) -

- For ALE v1 and v2:

- IPv4: 10,000 or

- IPv6: 6,000 or

- IPv4: 4,000, IPv6: 4,000

- IPv6 wide prefixes (> /64): 1,000

- For LSE or LSE2:

- IPv4: 20,000 or

- IPv6: 10,000

- IPv6 wide prefixes (>= /84): 1,000

NOTE: For LSE2 and FX2 models there's no restriction on wide prefixes

IP4 Scale profile –

- For LSE or LSE2:

- IPv4: 38,000

- IPv6: Not supported

- For ALE v1 and v2: Not supported

High Dual Stack Scale Profile –

- For LSE or LSE2:

- IPv4: 38,000 or

- IPv6: 19,000

- IPv6 wide prefixes (>= /84): 1,000

NOTE: For LSE2 and FX2 models there's no restriction on wide prefixes

- For ALE v1 and v2: Not supported

N/A

Maximum number of IP Longest Prefix Matches (LPM) entries

(Continued)

Note

The total of (# of IPv4 prefixes) + 2*(# of IPv6 prefixes) must not exceed the scale listed for IPv4 alone

High LPM Scale profile –

- For LSE or LSE2:

- IPv4: 128,000 or

- IPv6: 64,000

- IPv6 wide prefixes (>= /84): 1,000

NOTE: For LSE2 and FX2 models there's no restriction on wide prefixes

- For ALE v1 and v2: Not supported

N/A

Maximum number of Secondary addresses per logical interface

1

1

Maximum number of L3 interfaces per Context (SVIs and sub-interfaces)

- 1000 for SVI

- 32 for sub-interfaces with or without port-channel

N/A

Maximum number of ARP entries for L3 Outs

7,500

N/A

Shared L3 Out

- IPv4: 2,000 or

- IPv6: 1,000

- IPv4: 6,000 or

- IPv6: 3,000

Maximum number of L3 Outs

400

For LSE and LSE2: 800

2,400 (single-stack)

1,800 (dual-stack)

External EPGs

Number of External EPGs

800

ALE: 2,400

LSE: 4,000

The listed scale is calculated as a product of (Number of external EPGs)*(Number of border leaf switches for the L3Out)

For example, the following combination adds up to a total of 2,000 external EPGs in the fabric (250 external EPGs * 2 border leaf switches * 4 L3Outs):

- 250 External EPGs in L3Out1 on leaf1 and leaf2

- 250 External EPGs in L3Out2 on leaf1 and leaf2.

- 250 External EPGs in L3Out3 on leaf3 and leaf4

- 250 External EPGs in L3Out4 on leaf3 and leaf4

Number of External EPGs per L3 Out

250

600

The listed scale is calculated as a product of (Number of external EPGs per L3Out)*(Number of border leaf switches for the L3Out)

For examples, 150 external EPGs on L3Out1 that is deployed on leaf1, leaf2, leaf3, and leaf4 adds up to a total of 600

Maximum number of LPM Prefixes for External EPG Classification

ALE: 1,000 IPv4

LSE: refer to LPM scale section

N/A

Maximum number of host prefixes for External EPG Classification

ALE: 1,000

LSE and LSE2:

- Default Profile:

- IPv4 (/32): 16,000

- IPv6 (/128): 12,000

(combined number of host prefixes and endpoints can't exceed 12,000)

- IPv4 Profile:

- IPv4 (/32): 16,000

(combined number of host prefixes, mcast routes, and endpoints can't exceed 56,000)

- IPv6 (/128) : 0

- High Dual Stack Profile:

- IPv4 (/32): 64,000

(combined number of host prefixes, mcast routes, and endpoints can't exceed 64,000)

- IPv6 (/128): 24,000 (LSE)

(combined number of host prefixes and endpoints can't exceed 24,000)

- IPv6 (/128): 48,000 (LSE2 only)

(combined number of host prefixes and endpoints can't exceed 48,000)

N/A

Maximum number of host prefixes for External EPG Classification

(Continued)

- High LPM Profile:

- IPv4 (/32): 24,000

(combined number of host prefixes, mcast routes, and endpoints can't exceed 24,000)

- IPv6 (/128): 12,000

(combined number of host prefixes and endpoints can't exceed 12,000)

N/A

Bridge Domain

Maximum number of BDs

1,980

Legacy mode: 3,500

On ALE TORs with multicast optimized mode: 50

15,000

Maximum number of BDs with Unicast Routing per Context (VRF)

ALE: 256

LSE: 1,000

1,750

Maximum number of subnets per BD

1,000 (cannot be for all BDs)

1,000 per BD

Maximum number of EPGs per BD

3,960

4,000

Number of L2 Outs per BD

1

1

Number of BDs with Custom MAC Address

1,000

If on ALE TORs with multicast optimized mode: 50

1,000

If on ALE TORs with multicast optimized mode: 50

Maximum number of EPGs + L3 Outs per Multicast Group

128

128

Maximum number of BDs with L3 Multicast enabled

1,750

1,750

Maximum number of VRFs with L3 Multicast enabled

64

64

Maximum number of L3 Outs per BD

ALE: 4

LSE: 16

N/A

Number of static routes behind pervasive BD (EP reachability)

N/A

450

DHCP relay addresses per BD across all labels

16

N/A

Number of external EPGs per L2 out

1

1

Maximum number of PIM Neighbors

1,000

1,000

Maximum number of PIM Neighbors per VRF

64

64

Maximum number of L3Out physical interfaces with PIM enabled

32

N/A

Endpoint Groups (Under App Profiles)

Maximum amount of EPGs

Normally 3,960; if legacy mode 3,500

15,000

Maximum amount of encaps per EPG

1 Static leaf binding, plus 10 Dynamic VMM

N/A

Maximum Path encap binding per EPG

Equals to number of ports on the leaf

N/A

Maximum amount of encaps per EPG per port

One (path or leaf binding)

N/A

Maximum number of domains (physical, L2, L3)

- 10 static (L2, L3, physical)

- 10 dynamic

N/A

Maximum number of VMM domains

N/A

- 200 vDS

- 50 AVS

- 50 Cisco ACI Virtual Edge

Maximum amount of native encaps

- 1 per port (if a VLAN is used as a native VLAN)

- If there is a different native VLAN per port then it equals the number of ports

Applicable to each leaf independently

Maximum amount of 802.1p encaps

- 1, if path binding then equals number of ports

- If there is a different native VLAN per port then it equals the number of ports

Applicable to each leaf independently

Can encap be tagged and untagged?

No

N/A

Maximum number of Static endpoints per EPG

Maximum endpoints

N/A

Maximum number of Subnets for Inter-context access per tenant

4,000

N/A

Maximum number of Taboo Contracts per EPG

2

N/A

IP-based EPG (bare metal)

4,000

N/A

MAC-based EPG (bare metal)

4,000

N/A

Contracts

Security TCAM size

Default Scale profile

- For ALE v1: 4,000

- For ALE v2: 40,000

- For LSE and LSE2: 64,000

IPv4 Scale profile

- For LSE and LSE2: 64,000

- For ALE v1/v2: N/A

High Dual Stack Scale profile

- For LSE: 8,000

- For LSE2: 128,000

- For ALE v1/v2: N/A

High LPM Scale profile

- For LSE and LSE2: 8,000

- For ALE v1/v2: N/A

N/A

Approximate TCAM calculator given contracts and their use by EPGs

Number of entries in a contract X Number of Consumer EPGs X Number of Provider EPGs X 2

N/A

Maximum number of EPGs providing the same contract

100

100

Maximum number of EPGs consuming the same contract

100

100

Maximum number of consumers/providers for the same contract

N/A

number of consumer EPGs * number of provider EPGs * number of filters in the contract <= 50,000

Maximum number of rules for consumer/provider relationships with in-band EPG

400

N/A

Maximum number of rules for consumer/provider relationships with out-of-band EPG

400

N/A

FCoE NPV

Maximum number of VSANs

32

N/A

Maximum number of VFCs configured on physical ports and FEX ports

151

N/A

Maximum number of VFCs on port-channel (PC) interfaces and virtual port-channel (vPC) interfaces

7

N/A

Maximum number of FDISC per port

96

N/A

Maximum number of FDISC per leaf

96

N/A

FC NPV

Maximum number of FC NP Uplink interfaces

48

N/A

Maximum number of VSANs

32

N/A

Maximum number of FDISC per port

255

N/A

Maximum number of FDISC per leaf

1,000

N/A

VMM Scalability Limits

VMware

Configurable Options

Per Leaf Scale

Per Fabric Scale

Number of vCenters (vDS)

N/A

200 (Verified with a load of 10 events/minute for each vCenter)

Number of vCenters (AVS)

N/A

50

Number of vCenters (Cisco ACI Virtual Edge)

N/A

50

Datacenters in a vCenter

N/A

4

Total Number of VMM domain (vCenter, Datacenter) instances.

N/A

- 200 vDS

- 50 AVS

- 50 Cisco ACI Virtual Edge

Number of ESX hosts per AVS

240

N/A

Number of ESX hosts running Cisco ACI Virtual Edge

150

N/A

Number of EPGs per vCenter/vDS

N/A

5,000

Number of EPGs to VMware domains/vDS

N/A

5,000

Number of EPGs per vCenter/AVS

N/A

3,500

Number of EPGs to VMware domains/AVS

N/A

3,500

Number of EPGs per vCenter/Cisco ACI Virtual Edge

N/A

VLAN Mode: 1,300

VXLAN Mode: 2,000

Number of EPGs to VMware domains/Cisco ACI Virtual Edge

N/A

VLAN Mode: 1,300

VXLAN Mode: 2,000

Number of endpoints (EPs) per AVS

10,000

10,000

Number of endpoints per vDS

10,000

10,000

Number of endpoints per vCenter

10,000

10,000

Number of endpoints per Cisco ACI Virtual Edge

10,000

10,000

Support RBAC for AVS

N/A

Yes

Support RBAC for vDS

N/A

Yes

Support RBAC for Cisco ACI Virtual Edge

N/A

Yes

Number of Microsegment EPGs with vDS

400 (Tested with a total of 500 EPs attached to 1 vPC)

N/A

Number of Microsegment EPGs with AVS

1,000

N/A

Number of Microsegment EPGs with Cisco ACI Virtual Edge

1,000

N/A

Number of DFW flows per vEth with AVS

10,000

N/A

Number of DFW flows per vEth with Cisco ACI Virtual Edge

10,000

N/A

Number of DFW denied and permitted flows per ESX host with AVS

250,000

N/A

Number of DFW denied and permitted flows per ESX host with Cisco ACI Virtual Edge

250,000

N/A

Number of VMM domains per EPG with AVS

N/A

10

Number of VMM domains per EPG with Cisco ACI Virtual Edge

N/A

10

Number of VM Attribute Tags per vCenter

N/A

vCenter version 6.0: 500

vCenter version 6.5: 1,000

Microsoft SCVMM

Configurable Options

Per Leaf Scale (On-Demand Mode)

Per Leaf Scale (Pre-Provision Mode)

Per Fabric Scale

Number of controllers per SCVMM domain

N/A

N/A

5

Number of SCVMM domains

N/A

N/A

5

EPGs per Microsoft VMM domain

N/A

N/A

3,000

EPGs per all Microsoft VMM domains

N/A

N/A

9,000

EP/VNICs per HyperV host

N/A

N/A

100

EP/VNICs per SCVMM

3,000

10,000

10,000

Number of Hyper-V hosts

64

N/A

N/A

Number of logical switch per host

N/A

N/A

1

Number of uplinks per logical switch

N/A

N/A

4

Microsoft micro-segmentation

1,000

Not Supported

N/A

Microsoft Windows Azure Pack

Configurable Options

Per Leaf Scale

Per Fabric Scale

Number of Windows Azure Pack subscriptions

N/A

1,000

Number of plans per Windows Azure Pack instance

N/A

150

Number of users per plan

N/A

200

Number of subscriptions per user

N/A

3

VM networks per Windows Azure Pack user

N/A

100

VM networks per Windows Azure Pack instance

N/A

3,000

Number of tenant shared services/providers

N/A

40

Number of consumers of shared services

N/A

40

Number of VIPs (Citrix)

N/A

50

Number of VIPs (F5)

N/A

50

Layer 4 - Layer 7 Scalability Limits

Configurable Options

(L4-L7 Configurations)

Per Leaf Scale

Per Fabric Scale

Maximum number of L4-L7 logical device clusters

N/A

1,200

Maximum number of graph instances

N/A

1,000

Number of device clusters per tenant

N/A

30

Number of interfaces per device cluster

N/A

Any

Number of graph instances per device cluster

N/A

500

Deployment scenario for ASA (transparent or routed)

N/A

Yes

Deployment scenario for Citrix - One arm with SNAT/etc.

N/A

Yes

Deployment scenario for F5 - One arm with SNAT/etc.

N/A

Yes

AD, TACACS, RBAC Scalability Limits

Configurable Options

Per Leaf Scale

Per Fabric Scale

Number of ACS/AD/LDAP authorization domains

N/A

4 (16 maximum /server type)

Number of login domains

N/A

15

Number of security domains/APIC

N/A

15

Number of security domains in which the tenant resides

N/A

4

Number of priority

N/A

4 (16 per domain)

Number of shell profiles that can be returned

N/A

4 (32 domains total)

Number of users

N/A

8,000 local / 8,000 remote

Number of simultaneous logins

N/A

500 connections / NGNIX simultaneous REST logins

QoS Scalability Limits

The table below shows QoS scale limits. The scale numbers depend on whether remote leafs are present in the topology as well as MPOD QoS Policy and CoS Preservation settings.

QoS Scale with Remote Leaf in Topology

QoS Scale without Remote Leaf in Topology

MPOD QoS Policy enabled

Custom QOS Policy with DSCP

8

9

Custom QOS Policy with DSCP and Dot1P

8

9

Custom QOS Policy with Dot1P

43

48

Custom QOS Policy via a Contract

43

48

CoS Preservation enabled

Custom QOS Policy with DSCP

9

9

Custom QOS Policy with DSCP and Dot1P

9

9

Custom QOS Policy with Dot1P

48

48

Custom QOS Policy via a Contract

48

48

Notices