Contents

• Verified Scalability
• Cisco Nexus 3548 Switch Verified Scalability for NX-OS Releases
• Cisco NX-OS Release 5.0(3)A1(1)
• Cisco NX-OS Release 5.0(3)A1(2)

Verified Scalability

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Cisco Nexus 3548 Switch Verified Scalability for NX-OS Releases

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.

Cisco NX-OS Release 5.0(3)A1(1)

Table 1 Cisco NX-OS Release 5.0(3)A1(1) Layer 2 and Layer 3 Topology Configuration Limits

Feature	Verified Topology			Verified Maximum
Active VLANs per switch	5121			5122
MTU	9,216			9,216
STP logical interfaces	2,500			9,000
MST instances	63			64
MAC table size	8,192			65,532
Port Channels	8			24
Number of member ports per Port Channel	16			24
Number of system logging destination ports	0			8
SPAN sessions	4 active sessions 3			4 active bi-directional sessions4 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			65,536
IPv4 routes (LPM)	8192 (Normal Traffic Forwarding mode) 4096 (Warp mode)			16,384 (Normal Traffic Forwarding mode) 4096 (Warp mode)
Multicast routes	7,990			8,192
IGMP Snooping groups	3,000			8,000
ECMP5	2-way			32-way
TCAM entries for ACL	384 ingress (Normal Traffic Forwarding mode) 128 ingress (Warp mode)			3,000 ingress, 1,000 egress
HSRP	256			500
VRRP	2506			2507
Configurable QoS groups	4			4
BGP neighbors	85			85
OSPF neighbors	150 (in a single area, area 0)			150 (in a single area, area 0)
PIM neighbors	250			250
NAT translations	—			1023

¹ 507 VLANs in PVRST mode. 512 VLANs in RPVST mode where 507 are user-defined VLANs, and 512 VLANs in MST mode.

² 507 VLANs in PVRST mode. 512 VLANs in RPVST mode where 507 are user-defined VLANs, and 4,000 VLANs in MST mode.

³ Allows same SPAN source in a single direction in 2 SPAN sessions with difference destinations.

⁴ 4 active SPAN sessions regardless of the direction of the SPAN session.

⁵ Only supported in Normal Traffic Forwarding mode.

⁶ A combination of HSRP and VRRP groups, where the total is 250.

⁷ A combination of HSRP and VRRP groups, where the total is 250.

Cisco NX-OS Release 5.0(3)A1(2)

Table 2 Cisco NX-OS Release 5.0(3)A1(2) Layer 2 and Layer 3 Topology Configuration Limits

Feature	Verified Topology			Verified Maximum
Active VLANs per switch	5128			5129
MTU	9,216			9,216
STP logical interfaces	2,500			9,000
MST instances	63			64
MAC table size	8,192			65,532
Port Channels	8			24
Number of member ports per Port Channel	16			24
Number of system logging destination ports	0			8
SPAN sessions	4 active sessions 10			4 active bi-directional sessions11 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			65,536
IPv4 routes (LPM)	8192 (Normal Traffic Forwarding mode) 4096 (Warp mode)			24,000 (Normal Traffic Forwarding mode) 4096 (Warp mode)
Multicast routes	7,990			8,192
IGMP Snooping groups	3,000			8,192
ECMP12	2-way			32-way
TCAM entries for ACL	384 ingress (Normal Traffic Forwarding mode) 128 ingress (Warp mode)			3,000 ingress, 1,000 egress
HSRP	256			500
VRRP	25013			25014
Configurable QoS groups	4			4
BGP neighbors	85			85
OSPF neighbors	150 (in a single area, area 0)			150 (in a single area, area 0)
PIM neighbors	250			250
NAT translations	—			1023

⁸ 507 VLANs in PVRST mode. 512 VLANs in RPVST mode where 507 are user-defined VLANs, and 512 VLANs in MST mode.

⁹ 507 VLANs in PVRST mode. 512 VLANs in RPVST mode where 507 are user-defined VLANs, and 4,000 VLANs in MST mode.

¹⁰ Allows same SPAN source in a single direction in 2 SPAN sessions with difference destinations.

¹¹ 4 active SPAN sessions regardless of the direction of the SPAN session.

¹² Only supported in Normal Traffic Forwarding mode.

¹³ A combination of HSRP and VRRP groups, where the total is 250.

¹⁴ A combination of HSRP and VRRP groups, where the total is 250.

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