CISCO NX-OS 3548 Switch Verified Scalability User Guide

CISCO NX-OS 3548 Switch Verified Scalability

Product Information

Specifications

• Product Name : Cisco Nexus 3548 Switch
• Operating System : Cisco NX-OS Release 10.3(2)F
• Scalability : Verified scalability limits

Introduction
The Cisco Nexus 3548 Switch is a high-performance network switch designed for enterprise use. It provides advanced features and scalability to meet the needs of large-scale networks.

Verified Scalability Limits
This document describes the scalability limits for the Cisco Nexus 3548 Switch in Cisco NX-OS Release 10.3(2)F.

Layer 2 and Layer 3 Topology Configuration Limits

Port Channels
The Cisco Nexus 3548 Switch supports up to 40 vPC port-channels and 8 non- vPC port-channels in the verified topology. In the verified maximum, it supports 40 vPC port-channels and 24 non-vPC port-channels.

SPAN Sessions
The switch allows 4 active sessions in the verified topology and 8 active sessions in the verified maximum. It also supports 4 active bi-directional sessions with 1 destination port per session.

FAQ

• Q: What should I do if my scale requirements exceed the verified limits?
• A: If your scale requirements exceed the verified limits, please contact your Cisco representative for assistance. They may be able to validate support for your requirement based on the hardware’s scale capability.
• Q: What is the maximum number of VLANs supported per switch?

A: The maximum number of VLANs supported per switch is 507 in vPC normal mode and with RSTP.

Cisco Nexus 3548 Switch NX-OS Verified Scalability Guide, Release

10.3(2)F

• Revised: October 13, 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 10.3(2)F.

Table 1: Layer 2 and Layer 3 Topology Configuration Limits

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)

• 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
Feature| Verified Topology| Verified Maximum
---|---|---
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

• class copp-s-routingProto2 police pps 1300
• class copp-s-routingProto1 police pps 1000
• class copp-s-pimreg police pps 200
• class copp-s-lldp police pps 500

|

• class copp-s-routingProto2 police pps 500
• class copp-s-routingProto1 police pps 1500
• class copp-s-pimreg police pps 600
• class copp-s-lldp police pps 800

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

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

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

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