CISCO Nexus 3548 Switch NX-OS Verified Scalability Guide User Guide

CISCO Nexus 3548 Switch NX-OS Verified Scalability

Product Information

This document provides the verified scalability limits and configuration limits for the Cisco Nexus 3548 Switch running on Cisco NX-OS Release 10.4(1)F. It includes information on various features, such as VLANs, BFD neighbors, STP logical interfaces, MAC
table size, port channels, system logging destination ports, SPAN sessions, Layer 3 interfaces, VRFs, IPv4 routes, multicast routes, IGMP Snooping groups, TCAM entries for ACLs, HSRP, VRRP, BGP neighbors, OSPF neighbors, PIM neighbors, NAT translations, and multicast service reflection.

Verified Scalability Limits – Unidimensional

The following table provides the verified scalability limits for Cisco NX-OS Release 10.4(1)F:

24 non-vPC port-channels

Product Usage Instructions

To use the Cisco Nexus 3548 Switch, follow these instructions:

1. Ensure that your scale requirements are within the Verified Topology or Verified Maximum limits described in the manual.
2. If your scale requirements exceed these limits, contact your Cisco representative for further assistance.
3. Configure the switch based on your specific requirements while ensuring that the scale capability of the hardware is not exceeded.
4. Refer to the provided tables for the configuration limits of various features.
5. For any non-default CoPP values used for vPC Verified Topology, refer to Table 2 in the manual.

Please note that this is only a summary of the information provided in the user manual. For detailed configuration instructions and additional information, refer to the Cisco Nexus 3548 Switch NX-OS Verified Scalability Guide, Release 10.4(1)F.

Revised: September 22, 2023,

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 10.4(1)F.
Table 1: Layer 2 and Layer 3 Topology Configuration Limits

4000 (with MSTP)

BFD neighbors| 0| 32
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

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 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)

1. Allows same SPAN source in a single direction in 2 SPAN sessions with difference destinations.
2. 4 active SPAN sessions regardless of the direction of the SPAN session.
3. The host IP address pattern can lead to a hash collision in the host table and therefore the number of host routes programmed will be lesser than 65,535. To avoid a collision, use a different IP address range.
4. Only supported in Normal Traffic Forwarding mode.
5. A combination of HSRP and VRRP groups, where the total is 250.
6. A combination of HSRP and VRRP groups, where the total is 250.
   Note The following non-default CoPP values were used for some protocols for the verified topology scale numbers.

Table 2: Non-Default CoPP Values Used for vPC Verified Topology

Table 3: Non-VPC Scale Numbers of Cisco Nexus N3548-X Switches

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
Feature| Verified Topology| Verified Maximum
---|---|---
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)

Allows same SPAN source in a single direction in 2 SPAN sessions with difference destinations.
Only supported in Normal Traffic Forwarding mode.
A combination of HSRP and VRRP groups, where the total is 250.

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