Verified Scalability Limits
This document describes the Cisco NX-OS configuration limits for the Cisco Nexus 3548.
Introduction
This document lists the Cisco verified limits for topologies that include Layer 2 and Layer 3 feature configurations.
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.
![]() Note |
If your scale requirements exceed either the Verified Topology or the Verified Maximum limit, please contact your Cisco representative. Based on your requirements, it may be possible to validate support for your requirement, as long as the scale capability of the hardware is not exceeded. |
Verified Scalability Limits - Unidimensional
The tables in this section list the verified scalability limits for Cisco NX-OS Release 10.2(7)M.
Feature |
Verified Topology |
Verified Maximum |
||||
---|---|---|---|---|---|---|
Active VLANs per switch |
507 (vPC - normal mode) |
507 (with RSTP) 4000 (with MSTP) |
||||
BFD neighbors |
0 |
32 |
||||
EIGRP instances |
4 |
4 |
||||
MTU |
9,216 |
9,216 |
||||
STP logical interfaces |
2,500 |
9,000 |
||||
MST instances |
63 |
64 |
||||
MAC table size |
8,192 |
40,000 (vPC , Normal mode) 65,532 (non-vPC , Normal mode) 8,192 (non-vPC , Warp mode) |
||||
Port Channels |
40 vPC port-channels 8 non-vPC port-channels |
40 vPC port-channels 24 non-vPC port-channels |
||||
Number of member ports per Port Channel |
16 |
24 |
||||
Number of system logging destination ports |
0 |
8 |
||||
SPAN sessions |
4 active sessions 1 |
4 active bi-directional sessions2 1 destination ports per session |
||||
Layer 3 physical interfaces |
10 |
48 |
||||
Layer 3 SVI, subinterfaces, EtherChannels |
256 |
1,024 |
||||
VRF |
10 |
200 |
||||
IPv4 hosts |
4,096 |
65,535 3 |
||||
IPv4 routes (LPM) |
8192 (vPC , Normal mode) 4096 (non-vPC , Warp mode) |
24,576 (vPC , Normal mode ) 24,576 (non-vPC , Normal mode ) 4096 (non-vPC , Warp mode) |
||||
Multicast routes |
4000 (vPC , Normal mode) 7,990 (non-vPC , Warp mode) |
4000 (vPC , Normal mode) 8,192 (non-vPC , Normal mode) |
||||
IGMP Snooping groups |
3,000 |
8,192 |
||||
ECMP4 |
2-way |
32-way |
||||
TCAM entries for ACL |
384 ingress (Normal mode) 128 ingress (Warp mode) |
3,000 ingress, 1,000 egress (Normal mode) |
||||
HSRP |
256 |
500 |
||||
VRRP |
2505 |
2566 |
||||
Configurable QoS groups |
4 |
4 |
||||
BGP neighbors |
85 |
100 |
||||
OSPF instances |
4 |
4 |
||||
OSPF neighbors |
150 (in a single area, area 0) |
150 (in a single area, area 0) |
||||
PIM neighbors |
250 |
250 |
||||
NAT translations |
250 |
1023 |
||||
Multicast Service Reflection sessions |
400 |
1023 (Regular mode) 2047 (Fast Pass mode) |
![]() Note |
The following non-default CoPP values were used for some protocols for the verified topology scale numbers. |
Default Values | Non-Default Values |
---|---|
|
|
Feature |
Verified Topology |
Verified Maximum |
---|---|---|
Active VLANs per switch |
605 (MST Mode) |
507 (RSTP Mode) 4013 ( MSTP Mode) |
BFD neighbors |
16 |
32 |
MTU |
9,216 |
9,216 |
STP logical interfaces |
2,500 |
9000 |
MST instances |
1 |
64 |
MAC table size |
7375 (90% approx.) |
65532 (Non-warp Mode) 8192 (Warp Mode) |
Port Channels |
7 Non-vPC port-channels |
24 |
Number of member ports per Port Channel |
9 |
24 |
Number of system logging destination ports |
0 |
8 |
SPAN sessions |
4 Active sessions 7 |
4 |
Layer 3 physical interfaces |
10 |
48 |
Layer 3 SVI, subinterfaces, EtherChannels |
250 |
1024 |
VRF |
11 |
200 |
IPv4 hosts |
7400 (90% approx.) |
65,535 (Normal Mode) 8196 (Warp Mode) |
IPv4 routes (LPM) |
3700 (Non-vPC , WARP mode) |
24,576 (Non-vPC, Normal Mode) 4096 (Warp Mode) |
Multicast routes |
3680 (Non-vPC, WARP mode) |
8192 (VPC Normal Mode) 4096 (Non-VPC, Normal Mode) |
IGMP Snooping groups |
3,000 |
8192 |
ECMP 8 |
2-way |
32-way |
TCAM entries for ACL |
384 ingress (Normal mode) 128 ingress (WARP mode) |
3000 Ingress, 1000 Egress |
HSRP |
256 |
500 |
VRRP |
250 9 |
256 |
Configurable QoS groups |
4 |
4 |
BGP neighbors |
10 |
100 |
OSPF neighbors |
10 (in a single area, area 0) |
150 |
PIM neighbors |
100 |
250 |
NAT translations |
10 |
1023 |
Multicast Service Reflection sessions |
400 |
1023 (Regular mode) 2047 (Fast Pass mode) |