Cisco Nexus 5000 Series Switch CLI Software Configuration Guide, NX-OS 4.0(1a)N1 (OL-16597-01, January 2009)

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51-2
Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 51 Configuration Limits
Maximum diameter of a SAN Fabric 3 hops 12 hops
FSPF interface instances per switch 256 4,096
7
ISL instances per switch 256 256 (up to 8 Fibre Channel interfaces,
each with up to 32 VSAN instances)
Virtual interfaces 52 virtual Fibre Channel interfaces 52 virtual Fibre Channel interfaces
QoS System Classes 4 user-configurable classes 4 user-configurable classes
VLAN ACL (VACL) entries for the whole
switch
1,024 ASIC limit
8
Port ACL (PACL) entries per physical
Ethernet interface
128 ASIC limit
7
ACL Accounting 32 256 counters per ASIC
9
Fibre Channel Flows 32 256 counters per ASIC
8
Port channels 4 SAN port channels and 12 Ethernet
port channels
16 port channels (any combination of
SAN and Ethernet port channels)
SPAN Sessions 2 active sessions 18 sessions configured (2 active)
Egress SPAN sources 2 2
1. The entire 4094 VLAN ID space is supported.
2. 1024 STP instances times 52 10-Gigabit Ethernet ports.
3. Station table contains all unicast Ethernet MAC addresses and Ethernet multicast addresses.
4. The entire 4094 VSAN ID space is supported.
5. Requires two N5K-M1008 expansion modules.
6. This ASIC limit will only become significant in a future software release (when multiple virtual interfaces can be configured per Ethernet interface).
7. This is the number of Extended ISLs (16) times the number of VSANs (256).
8. Each ASIC supports a TCAM with 2,000 entries, divided into multiple sections. Each section must have a minimum of 64 entries and can only increase
in units of 64 entries. The software reserves the following: 128 entries for packet redirection to the Supervisor Engine; 64 entries for the two SPAN
sessions; 1024 entries for VACL; 576 entries for PACL; 64 entries for QoS.
9. Each ASIC supports 256 counters to be shared among policers (ACL accounting, Fibre Channel Flow, etc.) Each counter can be configured to count either
bytes or packets. A system-wide limit of 32 accounting entries for VACL or PACL is enforced.
Table 51-1 Configuration Limits (continued)
Feature Verified Limit Maximum Limit