Contents
Verified Scalability
The following tables list the Cisco verified scalability for topologies that include Layer 2 and Layer 3 feature configurations and Unicast Routing configurations.
Note
If your scale requirements exceed either the Verified Topology or the Verified Maximum, 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.
Table 1 Cisco NX-OS Release 5.0(3)U3(1) Layer 2 and Layer 3 Topology Verified Scalability Values Feature
Verified Topology1
Verified Maximum2
Active VLANs per switch
4,0003
4,0004
MTU (Bytes)
9,216
9,216
STP logical interfaces
9,000
9,000
MST instances
64
64
MAC table size
128,000
128,000
EtherChannels
10
64 (with the maximum of 16 port members per EtherChannel)
Number of port members per EtherChannel
16
16
SPAN sessions
2 active sessions
4 active sessions5
Layer 3 physical interfaces
64
64
Layer 3 SVI, subinterfaces, EtherChannels
1,024
1,024
VRF
200
1,000
IPv4 hosts
616,000
16,000
IPv6 hosts
78,000
8,000
IPv4 routes (LPM)
8,1928
16,0009
IPv6 routes (LPM less than or equal to 64 bits)
8,000 (with system urpf disabled) 10
4,000 (with system urpf enabled)11
8,000 (with system urpf disabled) 12
4,000 (with system urpf enabled)13
IPv6 routes (LPM greater than 64 bits and less than or equal to 127 bits)
256 (with system urpf disabled) 14
128 (with system urpf enabled)15
256 (with system urpf disabled) 16
128 (with system urpf enabled)17
IPv4 multicast routes
184,000
8,00019
IGMP Snooping groups
8,000
8,000
ECMP
32-way
64-way
TCAM entries for ACL20
1664 ingress, 1024 egress
1664 ingress, 1024 egress
HSRP
500
500
VRRP
255
255
Configurable QoS groups
8
8
HSRPv6
250
500
BFD neighbors
64
64
1 Verified Topology-- Indicates 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.2 Indicates the maximum scale capability tested for the corresponding feature individually. this number is the absolute maximum currently supported by Cisco NX-OS Release 5.0(3)U3(1) software for the corresponding feature. If the hardware is capable of a higher scale, future software releases may increase this verified maximum value.3 507 VLANs in PVRST mode. 512 VLANs in RPVST mode where 507 are user-defined VLANs, and 4,000 VLANs in MST mode.4 507 VLANs in PVRST mode. 512 VLANs in RPVST mode where 507 are user-defined VLANs, and 4,000 VLANs in MST mode.5 4 active SPAN sessions with the SPAN source in a single direction (RX only or TX only in each SPAN session. 2 active SPAN sessions with the SPAN source in both RX and TX directions.6 The Cisco Nexus 3064PQ offers half the scalability listed.7 The Cisco Nexus 3064PQ offers half the scalability listed.8 8,192 when URPF is enabled globally.9 Increase to 16,000 when URPF is disabled globally. Use the system urpf disable command to disable URPF.10 IPv6 will use up 2 entries for every route in the hardware.11 IPv6 will use up 2 entries for every route in the hardware.12 IPv6 will use up 2 entries for every route in the hardware.13 IPv6 will use up 2 entries for every route in the hardware.14 IPv6 will use up 2 entries for every route in the hardware.15 IPv6 will use up 2 entries for every route in the hardware.16 IPv6 will use up 2 entries for every route in the hardware.17 IPv6 will use up 2 entries for every route in the hardware.18 The Cisco Nexus 3064PQ offers half the scalability listed.19 Use the hardware profile multicast max-limit 8000 command.20 TCAM entries are shared between IPv4 and IPv6 ACLs. Please refer to the "Configuring ACL TCAM Region Sizes" section of the Security Guide for further breakdown and details.
Table 2 Cisco NX-OS Release 5.0(3)U3(1) Unicast Routing Verified Scalability Values Feature
Parameter
Verified Limit
OSPFv2
Number of active interfaces
300
Number of passive interfaces
200
Number of process instances
4
Number of neighbors/total routes with aggressive timers (1 second/3 seconds)
16/7,900
OSPFv3
Number of active interfaces
200
Number of passive interfaces
200
Number of process instances
4
Number of neighbors/total routes with aggressive timers (1 second/3 seconds)
16/4,000
OSPFv2/OSPFv3 together
Number of active interfaces
400
Number of process instances
4
EIGRP
Number of active interfaces
50/7,500
BGP for IPv4
Number of peers (iBGP and eBGP, active)
500/6,500
Number of AS-path entries
256
Number of prefixes per peer (one peer, eBGP or iBGP, IPv4
6,500 BGP for IPv6
Number of peers (iBGP and eBGP, active)
500/3,900
Number of AS-path entries
256
Number of prefixes per peer (one peer, eBGP or iBGP, IPv4)
3,900
HSRP
Number of groups with default timers (3 seconds/10 seconds) for IPv6
500
Number of groups with aggressive timers (1 second/3 seconds) for IPv4
500
VRRP
Number of groups with default timers (1 second/3 seconds) for IPv4
250
VRFs
Number of VRFs
1,000
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