Contents
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)F2(2). 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.
Table 1 Interfaces Verified Scalability Limits (Unidimensional) Feature
Verified Limit
DHCP servers/relay IPs per switch
5 (IPv4) + 5 (IPv6)
Port channel member links
32
SVIs
410 (with HSRP), 2000 without HSRP
vPCs
256
Table 2 Label Switching Verified Scalability Limits (Unidimensional) Feature
Verified Limit
Forwarding Equivalence Classes (FECs)
1000
Equal-cost multipaths (ECMPs)
8
FECs ECMPs
8000
Table 3 Layer 2 Switching Verified Scalability Limits (Unidimensional) 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
Table 4 Layer 3 Multicast Verified Scalability Limits (Unidimensional) 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
Table 5 Security Verified Scalability Limits (Unidimensional) 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
Table 6 System Management Verified Scalability Limits (Unidimensional) 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
Table 7 Layer 3 Unicast Routing Verified Scalability Limits (Unidimensional) Feature
Verified Limit
BFD sessions (echo mode)
288
BGP neighbors
256
HSRP groups
498
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
VRRP
VRRP groups per interface or I/O module
15
Deployment Case Studies
This section provides sample topologies for some common deployments. For each topology, the scalability numbers are the limits with all of the listed features enabled at the same time.
Attention:These numbers are not the maximum verified values if each feature is viewed in isolation. For these numbers, see the "Verified Scalability Limits" section.
Verified Scalability Limits (Multidimensional)
The tables in this section list the verified scalability limits for Cisco NX-OS Release 7.0(3)F2(2). 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.
Table 9 MSDC iBGP/OSPF Profile Verified Scalability Limits (Multidimensional) 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
1 A fully loaded chassis consisting of 4 X9636C-R line cards and 4 X9636Q-R line cards and 6 C9508-FM-R fabric modules and 2 System controllers and 2 Supervisor modules
Table 10 MSDC eBGP Profile Verified Scalability Limits (Multidimensional) 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
2 A fully loaded chassis consisting of 8 X9636C-R line cards and 6 C9508-FM-R fabric modules and 2 System controllers and 2 Supervisor modules
Table 11 L2/L3 Aggregation Verified Scalability Limits (Multidimensional) 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
3 A fully loaded chassis consisting of 1 X9636C-R line cards and 2 C9508-FM-R fabric modules and 2 System controllers and 2 Supervisor modules
Table 12 VxLAN Profile Verified Scalability Limits (Multidimensional) 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
4 A fully loaded chassis consisting of 1 X9636C-R line cards and 2 C9508-FM-R fabric modules and 2 System controllers and 2 Supervisor modules
Table 13 vPC Verified Scalability Limits (Multidimensional) Feature
Verified Limit
Physical interfaces enabled
268
IPv4 unicast routes (LPM)
60,060
IPv6 unicast routes (LPM)
15,676
IPv4 ARP
40,000
IPv6 ND
40,000
MAC addresses
90,000
VLANs
625
vPCs
255
OSPFv2 neighbors
20 Active + 512 Passive
OSPFv3 neighbors
20 Active + 512 Passive
BGP (IPv4) neighbors
16 Upstream ECMP and 1 EBGP, total of 17
BGP (IPv6) neighbors
16 Upstream ECMP and 1 EBGP, total of 17
SVIs
512
HSRP VLANs (IPv4/IPv6)
512 IPV4 and 512 IPv6
Virtual ports
450
Port channel member links
8,4,2,1 VPC member ports
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