Verified Scalability Limits
This document describes the Cisco NX-OS configuration limits for the Cisco Nexus 9508 switch with an X9636C-R or X9636Q-R line card or a C9508-FM-R fabric module.
Introduction
The values provided in this guide should not be interpreted as theoretical system limits for Cisco Nexus 9000 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 verified scalability limits for Cisco NX-OS Release 7.0(3)F1(1). These limits are validated with a unidimensional configuration. 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 |
Verified Limit |
---|---|
DHCP clients per switch |
5 (IPv4) + 5 (IPv6) |
Port channel links |
32 |
SVIs |
410 (with HSRP), 2000 without HSRP |
vPCs |
30 |
Feature |
Verified Limit |
---|---|
Forwarding Equivalence Classes (FECs) |
1000 |
Equal-cost multipaths (ECMPs) |
8 |
FECs ECMPs |
8000 |
Flex counters for static MPLS in egress direction |
0 |
Flex counters per adjacency |
0 |
Feature |
Verified Limit |
---|---|
MAC addresses |
92,000 |
MST instances |
64 |
MST virtual ports |
218,185 |
RPVST virtual ports |
13,750 |
VLANs |
4000 |
VLANs in RPVST mode |
250 |
Feature |
Verified Limit |
---|---|
IPv4 multicast routes |
32,000 (Layer 3) |
Outgoing interfaces (OIFs) |
16 OIFs for 32K mroutes or 287 OIFs for 1000 mroutes |
PIM neighbors |
500 |
Feature |
Verified Limit |
---|---|
IPv4 ingress access control entries (ACEs) |
RACL-2048, PACL-1024 (without TCAM Carving) IPv4 52640 ACEs per system |
IPv4 egress access control entries (ACEs) |
N/A |
IPv6 ingress access control entries (ACEs) |
RACL-1024, PACL-1024 (without TCAM Carving) IPv4 25200 ACEs per system |
IPv6 egress access control entries (ACEs) |
N/A |
Feature |
Verified Limit |
---|---|
SPAN and ERSPAN |
|
Configurable SPAN or ERSPAN sessions |
32 |
Active SPAN or ERSPAN sessions |
32 |
Active localized SPAN or ERSPAN session per line card |
32 sessions across ports on single line card |
Active localized SPAN or ERSPAN session (Rx and Tx, Rx, or Tx) |
32 sessions, 128 sources and 1 destination |
Destination interfaces per SPAN session |
1 |
Source VLANs per SPAN or ERSPAN |
32 |
Feature |
Verified Limit |
---|---|
BFD sessions (echo mode) |
288 |
BGP neighbors |
256 |
HSRP groups |
410 |
IPv4 ARP |
80,000 |
IPv4 host routes |
750,000 |
IPv6 host routes |
62,000 |
IPv6 ND |
32,000 |
IPv4 unicast routs (LPM) |
192,000 |
IPv6 unicast routs (LPM) |
62,000 |
OSPFv2 neighbors |
1000 |
OSPFv3 neighbors |
1000 |
OSPF/OSPFv3 LSA/LSDB size |
100,000 |
OSPF/OSPFv3 areas |
15 |
VRFs |
1000 |
Feature |
Verified Limit |
---|---|
VRRP |
|
VRRP groups per interface or I/O module |
15 |
Feature |
Verified Limit |
---|---|
VxLAN BGP eVPN |
|
Layer 3 VNIs / VRFs |
100 |
VTEPs |
256 |
IPv4 host routes |
128,000 |
IPv6 host routes |
32,000 |
IPinIP Tunneling |
4000 |
The tables in this section list the verified scalability limits for Cisco NX-OS Release 7.0(3)F1(1). These limits are validated with a multidimensional configuration. 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 |
Verified Limit 1 |
---|---|
Number of 100G ports |
144 |
Number of 40G ports |
144 |
ECMP |
16-way (Upstream) |
BGP neighbors |
16 |
BGP IPv4 VLSM unicast routes |
18,000 |
BGP IPv6 VLSM unicast routes |
10,000 |
OSPFv2 neighbors |
264 |
OSFPv3 neighbors |
264 |
OSPF IPv4 /32 unicast routes |
26,000 |
OSPF IPv4 VLSM unicast routes |
1200 |
OSPF IPv6 /128 unicast routes |
26,000 |
OSPF IPv6 VLSM unicast routes |
1200 |
BFD sessions |
264 |
VRF |
250 |
PIM neighbors |
264 |
IPv4 (*,G) multicast routes |
1500 |
IPv4 (S,G) multicast routes |
3000 |
RACL |
1500 500 |
SPAN sessions |
1 local SPAN sessions |
Feature |
Verified Limit 2 |
---|---|
Number of 100G ports |
288 |
ECMP |
16-way (Upstream) |
BGP neighbors |
268 |
BGP IPv4 /32 unicast routes |
30,000 |
BGP IPv4 VLSM unicast routes |
18,000 |
BGP IPv6 /128 unicast routes |
30,000 |
BGP IPv6 VLSM unicast routes |
10,000 |
BFD sessions |
272 |
VRF |
250 |
PIM neighbors |
256 |
IPv4 (*,G) multicast routes |
1000 |
IPv4 (S,G) multicast routes |
2500 |
RACL |
1500 500 |
SPAN sessions |
1 local SPAN sessions |
Feature |
Verified Limit 3 |
---|---|
Number of 100G ports |
36 |
ECMP |
16-way (Upstream) |
OSPFv2 neighbors |
17 |
OSPFv3 neighbors |
17 |
OSPF IPv4 /32 unicast routes |
30,000 |
OSPF IPv4 VLSM unicast routes |
1000 |
OSPF IPv6 /128 unicast routes |
30,000 |
OSPF IPv6 VLSM unicast routes |
1000 |
BFD sessions |
17 |
VRF |
250 |
VLAN |
2000 |
SVI |
2000 |
VRRP v4 Groups |
2000 VRRS / 16 VRRPv3 |
VRRP v6 Groups |
2000 VRRS / 16 VRRPv3 |
PIM neighbors |
17 |
IPv4 (*,G) multicast routes |
1500 |
IPv4 (S,G) multicast routes |
20,000 |
RACL |
1500 500 |
SPAN sessions |
2 local SPAN sessions |
Feature |
Verified Limit 4 |
---|---|
Number of ports |
36 |
ECMP |
8-way (Upstream) |
BGP neighbors |
258 |
BGP EVPN L2VPN host routes |
64,000 |
BGP IPv4 VLSM unicast routes or OSPF |
10,000 |
BGP IPv6 VLSM unicast routes or OSPF |
6000 |
BFD sessions |
31 |
PIM neighbors |
288 |
IPv4 (*,G) multicast routes |
2000 |
IPv4 (S,G) multicast routes |
16,000 |
RACL |
1500 500 |
SPAN sessions |
2 local SPAN sessions |
Feature |
Verified Limit |
---|---|
Physical interfaces enabled |
70 |
IPv4 unicast routes (LPM) |
60,060 |
IPv6 unicast routes (LPM) |
15,676 |
IPv4 ARP |
33,500 |
IPv6 ND |
26,500 |
MAC addresses |
46,000 |
VLANs |
410 |
vPCs |
30 |
OSPFv2 neighbors |
380 |
OSPFv3 neighbors |
380 |
BGP (IPv4) neighbors |
16 |
BGP (IPv6) neighbors |
16 |
SVIs |
410 |
HSRP VLANs (IPv4/IPv6) |
380 IPV4 and 380 IPv6 |
Virtual ports |
450 |
Port channel links |
8,4,2,1 VPC member ports |