Verified Scalability Limits
This chapter describes the Cisco NX-OS configuration limits for the Cisco Nexus 3164Q switch.
Introduction
The values provided in this guide should not be interpreted as theoretical system limits for Cisco Nexus 3164Q 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 (Unidimensional)
The tables in this section list the unidimensional verified scalability limits for Cisco NX-OS Release 7.0(3)I1(2) on the Cisco Nexus 3164Q switch. 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.
|
Feature |
3164Q Verified Limit |
|---|---|
|
BFD sessions |
128 (IPv4) + 128 (IPv6) |
|
Generic routing encapsulation (GRE) tunnels |
8 |
|
Port channel links |
32 |
|
SVIs |
250 |
|
vPCs |
60 |
|
Feature |
3164Q Verified Limit |
|---|---|
|
MST instances |
64 |
|
MST virtual ports |
48,000 |
|
RPVST virtual ports |
12,000 |
|
VLANs |
3900 |
|
VLANs in RPVST mode |
500 |
 Note |
The number of supported VLANs per vPC should be within the MST or RPVST virtual port count specified in this table, depending on the topology. |
|
Feature |
3164Q Verified Limit |
|---|---|
|
IPv4 multicast routes |
32,000 |
|
Outgoing interfaces (OIFs) |
40 (see CSCum58876) |
|
IGMP snooping groups |
32,000 |
|
PIM neighbors |
250 |
Note |
The IPv4 multicast routes and the IPv4/IPv6 host routes share the same hardware table. Limits are provided for both the default line card mode and the max host line card mode. |
Note |
High availability (graceful restart and stateful switchover) is not supported when unicast or multicast aggressive timers are configured at any scale. |
|
Feature |
3164Q Verified Limit |
|---|---|
|
DHCP snooping bindings |
2000 |
|
IPv4 ingress ACLs |
3070 (per network forwarding engine) |
|
IPv4 egress ACLs |
765 (per network forwarding engine) |
|
IPv6 ingress ACLs |
1530 (per network forwarding engine) |
|
IPv6 egress ACLs |
250 (per network forwarding engine) |
Note |
The ACL scalability limits also apply to policy-based ACLs (PBACLs). |
|
Feature |
3164Q Verified Limit |
|---|---|
|
PTP |
|
|
10G physical ports enabled for PTP |
44 |
|
SPAN and ERSPAN |
|
|
Configurable SPAN or ERSPAN sessions |
4 |
|
Active SPAN or ERSPAN sessions1 |
4 |
|
Active localized SPAN or ERSPAN sessions per line card2 |
4 |
|
Source interfaces per SPAN or ERSPAN session (Rx and Tx, Rx, or Tx) |
48 |
|
Destination interfaces per SPAN session |
1 (physical interface) |
|
Source VLANs per SPAN or ERSPAN session |
32 |
|
TAP Aggregation |
|
|
Redirect interfaces in the redirect port list |
12 |
|
Redirect port lists (or fan outs) per system |
100 |
|
Feature |
3164Q Verified Limit |
|---|---|
|
Unicast Routing |
|
|
BGP neighbors |
512 (IPv4 only) 512 (IPv6 only) 256 (IPv4) + 256 (IPv6) |
|
eBGP |
1000 |
|
EIGRP neighbors |
128 (IPv4), 128 (IPv6) |
|
EIGRP routes |
20,000 |
|
HSRP groups |
250 |
|
IPv4 ARP |
48,000 |
|
IPv4 host routes |
208,000 |
|
IPv6 host routes |
40,000 |
|
IPv6 ND |
40,000 |
|
IPv4 unicast routes (LPM) |
128,000 (default system routing mode) 128,000 with no IPv6 routes (64-bit ALPM routing mode) |
|
IPv6 unicast routes (LPM) |
20,000 (default system routing mode) 80,000 with no IPv4 routes (64-bit ALPM routing mode) |
|
IPv4 and IPv6 unicast routes (LPM) in 64-bit ALPM routing mode |
x IPv6 routes and y IPv4 routes, where 2x + y <= 128,000 |
|
MAC addresses |
80,000 |
|
OSPFv2 neighbors |
256 |
|
OSPFv3 neighbors |
256 |
|
VRFs |
1000 |
|
VRRP groups per interface or I/O module |
250 |
|
Policy-Based Routing (PBR) |
|
|
Configured sequences per policy |
256 |
|
Next-hop addresses per policy |
32 |
|
IPv4 ACEs (unidimensional) |
3072 (per network forwarding engine) |
|
IPv6 ACEs (unidimensional) |
1536 (per network forwarding engine) |
|
IPv4 and IPv6s ACEs |
2048 IPv4 + 256 IPv6 |
|
Interfaces with PBR policy |
512 |
|
VRRPv3 |
|
|
VRRPv3 groups per interface |
255 |
|
VRRPv3 groups with default timers (1 s) |
490 |
|
VRRPv3 groups with aggressive timers (100 ms) |
200 |
|
VRRPv3 groups with relaxed timers (3 s) |
490 |
|
Pathways with one VRRPv3 group with default timer (1 s) |
489 |
|
VRRPv3 groups and pathways combined |
490 |
Note |
The IPv4 and IPv6 unicast routes share the same hardware table. Limits are provided for both the default line card mode and the max host line card mode. |
Note |
The IPv4/IPv6 host routes and the IPv4 multicast routes share the same hardware table. Limits are provided for both the default line card mode and the max host line card mode. |
Note |
High availability (graceful restart and stateful switchover) is not supported when unicast or multicast aggressive timers are configured at any scale. |
Guidelines and Limitations for OSPF Verified Scalability Limits
- To achieve the highest scale, we recommend that you use a single OSPF instance instead of multiple instances.
- Each OSPFv2 and OSPFv3 scale value might vary when combined with other parameters.
- The graceful restart timeout value might need to be increased in multidimensional scenarios.
|
Feature |
3164Q Verified Limit |
|---|---|
|
VXLAN Flood and Learn |
|
|
Virtual network identifiers (VNIs) or VXLAN-mapped VLANs |
1000 |
|
Underlay multicast groups |
128 |
|
Overlay MAC addresses |
64,000 |
|
Remote VXLAN tunnel endpoints (VTEPs) |
256 |
|
Ingress replication peers |
256 |
|
Ingress replication Layer 2 VNIs |
1000 |
|
MAC addresses for ingress replication |
64,000 |
|
VXLAN VLAN logical port VP count |
6000 |
|
VXLAN BGP eVPN |
|
|
Layer 2 VNI |
1000 |
|
Underlay multicast groups |
128 |
|
VTEPs |
256 |
|
BGP VTEP peers |
256 |
|
MAC addresses |
64,000 |
|
VXLAN VLAN logical port VP count |
6000 |
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