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This chapter contains the following sections:
This document lists the Cisco verified scalability limits.
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.
This table lists the 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 |
24 4 |
48 |
Maximum FEXs dual-homed to a vPC Switch Pair |
24 |
48 |
MAC Table Size (Entries) |
64,000 |
115,000 |
Number of Switchport Etherchannels |
48 |
The following three values apply to the Cisco Nexus 5672:
The following three values apply to the Cisco Nexus 56128: |
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 |
40005 |
4000 |
FabricPath Switch IDs |
500 |
500 |
FabricPath Multicast Trees |
1 |
1 |
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 6 |
1936 |
Segmentation ID |
3000 (1000 global segments, 2000 local segments) |
3000 (1000 global segments, 2000 local segments) |
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. |
Feature |
Verified Topology |
Verified Maximum |
|
---|---|---|---|
Active VLANs/VSANs per Switch |
1000 7 |
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 8 |
24 |
24 |
|
MAC Table Size (Entries) |
32,000 9 |
64,000 10 |
|
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 11 |
8000 |
24,000 |
|
Dynamic IPv6 Routes 12 |
4000 13 |
6000 |
|
Multicast IPv4 Routes 14 |
4000 |
8000 |
|
ARPs (IPv4 Hosts) 15 |
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 16 |
256 |
500 |
|
VRRP Groups 17 |
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 |
This table lists the verified scalability for a Layer 3 aggregation routing deployment.
Feature |
Verified Topology |
Verified Maximum |
---|---|---|
Active VLANs/VSANs per Switch |
4000 18 |
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 19 |
115,000 20 |
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 21 |
8000 |
24,000 |
Dynamic IPv6 Routes 22 |
4000 23 |
6000 |
Multicast IPv4 Routes 24 |
8000 |
32,000 |
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) 25 |
64,000 |
64,000 |
IPv6 Hosts 26 |
10,000 27 |
32,000 |
IGP Peers |
64 |
100 |
HSRP Groups 28 |
1721 (911 IPv4, 810 IPv6) |
1721 (911 IPv4, 810 IPv6) |
VRRP Groups 29 |
500 |
500 |
FabricPath Switch IDs |
500 |
500 |
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) |
This table lists the 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 (32 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 30 |
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 5600 Series Switch |
17 per DUT |
24 |
Maximum FEXs Dual Homed to a vPC Cisco Nexus 5600 Series Switch Pair |
34 |
34 |
MAC Table Size |
32,000 unicast entries 31 |
115,000 entries 32 |
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) |
544 |
768 |
FabricPath VLANs |
4,000 |
4,000 |
FabricPath Switch IDs |
500 |
500 |
FabricPath Multicast Trees |
2 |
2 |
Number of FabricPath Topologies |
2 |
2 |
Number of FabricPath Core Links |
2 |
16 |
FLOGIs or FDISCs per NPV Port Group |
512 |
512 |
Zone Sets per Switch |
32 |
500 |
Zone Members per Physical Fabric (includes all VSANs) |
16,000 |
16,000 |
Zones per Switch (includes all VSANs) |
8000 |
8000 |
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 |
544 |
544 |
Maximum FCIDs Allocated |
1024 |
4000 |
Fibre Channel Flows |
32 |
32 |
FLOGIs or FDISCs per switch |
1024 |
4000 |
The maximum number of vFCs that can be bound to a port-channel |
48 |
48 |
This table lists the 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 |
This table lists the 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 |
L3 ISIS |
Number of adjacencies |
100 |
Feature |
Verified Maximum |
---|---|
VTEP Peers 1K |
872 remote peers and 128 peers. |
Local VTEP Peers (hypervisors) |
128 |
Multicast Distribution Groups |
200 |
Number of VNIs |
650 |
SVIs |
900 |
MAC addresses |
64000 |
L3 Routes |
8000 |
Multicast Groups |
4000 |
VRFs |
125 |
FEXes |
24 |