Scalability IP Address VLAN and Routing Maximum Values

The following table lists the switch scalability values for the areas of VLANs, ACLs, hardware, ARP, and routing.

Subject	Maximum
IPv4 ACLs
total named (extended or standard)	Up to 2048 (minus any IPv4 numeric standard or extended ACL assignments and any RADIUS-assigned ACLs)^[1]
total numbered standard	Up to 99^[1]
total numbered extended	Up to 100^[1]
total ACEs in all IPv4 ACLs	Up to 3072^[1]
Layer-3
VLANs with at least one IP Address	512
IP addresses per system	2048 IPv4 2048 IPv6^[2]
IP addresses per VLAN	32^[3]
Static routes (IPv4 and IPv6 combined)	256
IPv4 host hardware table	72 K (8K internal, 64K external)
IPv4 BMP hardware table	2 K
ARP
ARP entries	25,000
Packets held for ARP resolution	25
Dynamic Routing
Total routes supported	IPv4 only: 10,000 (including ARP) IPv4 and IPv6: 10 K (IPv4) and 3 K (IPv6)^[4] IPv6 only: 5 K^[5]
IPv4 Routing Protocol
RIP interfaces	128
IPv6 Routing Protocol
DHCPv6 Helper Addresses	32 unique addresses; multiple instances of same address counts as 1 towards maximum
^[2]These limits apply only to user-configured addresses and not to auto-configured link local and prefix IPv6 addresses. A maximum configuration could support up to 2048 user-configured and 2048 auto-configured IPv6 addresses for a total of 4096. ^[3]There can be up to 32 IPv4 and 32 user-configured IPv6 addresses on a single VLAN. In addition, each VLAN is limited to 3 auto-configured prefix-based IPv6 addresses. ^[4]Configured as an ABR for OSPF with four IPv4 areas and four IPv6 areas. ^[5]Configured as an ABR for OSPF with two IPv6 OSPF areas.

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