Table Of Contents

Configuration Limits

Configuration Limits

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The features supported by the Cisco Nexus 4001I and 4005I Switch Module for IBM BladeCenter Switch have maximum configuration limits. For some of the features, we have verified configurations that support limits less than the maximum. Table 36-1 lists the Cisco verified limits and maximum limits for switches running Cisco NX-OS for the Cisco Nexus 4001I and 4005I Switch Module for IBM BladeCenter.

Table 36-1 Configuration Limits 

Feature	Verified Limit	Maximum Limit
VLANs per switch1	512	512
PVLANs per switch	100	100
Ethernet MTU	9,216 bytes	9,216 bytes (ASIC limit)
STP logical interface instances	3,000 instances Only 2,500 can be true STP bridge to STP bridge connections	N/A
MST instances per switch (every instance is RSTP enabled)	64	64 (IEEE standard)
Station Table2	16,000 entries	32,000 entries
IP Multicast addresses (IGMP snooping)	1,000 addresses	1,000 addresses
Device Aliases per fabric	8,000	8,000
Event Traps - forward via Email	4 destinations	50 destinations
FLOGIs or FDISCs per NPV port group	62	100
QoS System Classes	5 user-configurable classes	5 user-configurable classes
VLAN ACL (VACL) entries for the whole switch	1,024	1,024
Port ACL (PACL) entries per physical Ethernet interface	512	512
EtherChannels	12 EtherChannels	16
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 Station table contains 8000 unicast plus 1000 multicast addresses.