![]() |
Table Of Contents
Cisco MDS NX-OS Release 5.0(x)
Configuration Limits
Cisco MDS NX-OS Release 5.0(x)
Configuration Limits
Revised: January 2012, Cisco MDS NX-OS Release 5.0(x)The features supported by Cisco MDS NX-OS have maximum configuration limits. Some of the features have configuration limits less than the maximum limits. The following table lists the known feature configuration limits for Release 5.0(x) and lists the maximum configuration limits for the features.
Feature Verified Configuration Limit for Release NX-OS 5.0(x) Maximum Configuration LimitVSANs
80 VSANs per physical fabric
4000 VSANs per physical fabric
Switches in a single MDS physical fabric or VSAN
60 switches per fabric (75 switches per fabric1 )
239 switches
PortChannels and member ports in PortChannels
For MDS 91xx switches, 16 PortChannels with 16 members ports in all PortChannels (you can have 16 PortChannels, each with 1 member, or 1 PortChannel with 16 members).
For MDS 95xx switches, 256 PortChannels, 16 members maximum in a single port channel.
For MDS 91xx switches, 16 PortChannels with 16 members ports in all PortChannels (you can have 16 PortChannels, each with 1 member, or 1 PortChannel with 16 members).
For MDS 95xx switches, 256 PortChannels, 16 members maximum in a single port channel.
Switches in multivendor switch fabric
32 switches per VSAN
239 switches
SSH
61 sessions
64 sessions
Domains per VSAN
60 domains per VSAN (75 domains per VSAN1)2
239 domains
FCNS entries per fabric
10 K per fabric
10 K per fabric
Device alias3
8 K per fabric
20 K per fabric
Zone members
16,000 zone members per physical fabric (includes all VSANs)
20,000 zone members per physical fabric (includes all VSANs)
Zones
8000 zones per switch (includes all VSANs)
8000 zones per switch (includes all VSANs)
Zone sets
500 zone sets per switch (includes all VSANs)
1000 zone sets per switch (includes all VSANs)
Supported hops for all major storage, server, and HBA vendors
7 hops (diameter of the SAN fabric)
12 hops
IVR zone members
4000 IVR zone members per physical fabric
20,000 IVR zone members per physical fabric in Cisco NX-OS Release 3.0(3) and later
10,000 IVR zone members per physical fabric prior to Cisco NX-OS Release 3.0(3)
IVR zones
2000 IVR zones per physical fabric
8000 IVR zones per physical fabric in Cisco NX-OS Release 3.0(3) and later
2000 IVR zones per physical fabric prior to Cisco NX-OS Release 3.0(3)
IVR zone sets
32 IVR zone sets per physical fabric
32 IVR zone sets per physical fabric
IVR service groups
16 service groups per physical fabric
16 service groups per physical fabric
FLOGIs or FDISC per NPV port4 group.
For 9148 Switches: 114
For 9148 Switches: 114
FLOGIs or FDISC per NPV port group.
For 9124/9134 Switches: 89
For 9124/9134 Switches: 89
NPV switches per NPV core switch
105
105
FLOGIs per line card on NPV core switch
400
400
FLOGIs per NPV core switch
2000
2000
CFS Peer Limit
80
80
ISL instances per switch5
Up to 200 ISLs, each with 16 VSANs, for a total of 3200 port-VSAN instances. You can configure more than 200 ISLs with fewer than 16 VSANs, or fewer than 200 ISLs with more than 16 VSANs, within the total ports per VSAN instance limit of 3200.
Up to 200 ISLs, each with 16 VSANs, for a total of 3200 port-VSAN instances. You can configure more than 200 ISLs with fewer than 16 VSANs, or fewer than 200 ISLs with more than 16 VSANs, within the total ports per VSAN instance limit of 3200.
IP ports per switch
No limits
No limits
Fibre Channel modules versus IPS modules per switch
No limits
No limits
iSCSI and iSLB sessions per IP port
500 sessions
500 sessions
iSCSI and iSLB sessions per switch
5000 sessions
5000 sessions
iSCSI and iSLB initiators supported in physical fabric
2000 initiators
2000 initiators
iSCSI and iSLB initiators supported per port
200 initiators
200 initiators
iSCSI and iSLB targets per physical fabric (virtual and initiator targets)
6000 targets
6000 targets
ISLB VRRP
20 per switch
20 per switch
Event Traps-forward via e-mail
1 destination
1 destination
Maximum latency (round-trip time) and packet drop supported on FCIP links
Note
The limit is the same regardless whethere latency and packet drop conditions exist together or only one of them exists.
100 ms round trip and 0.05% packet drop
100 ms round trip and 0.05% packet drop
1 Certain design considerations must be met to reach this limit. We recommend that you have the large fabric design validated by Cisco Advanced Services.
2 NPV switches do not have a domain ID and do not count towards the maximum limit.
3 Device aliases can be restricted to switches where zoning is done and activated. Distributing device alias fabric-wide might result in unnecessary consumption of resources for the database.
4 The NPV port group is a set of front panel NPV ports that share the same set of forwarding resources in a switch. Each switch has a different set of port groups. The mapping from a port to a port group is platform specific. You can display this mapping by using the show npv internal info command. For more information on this show command, refer to the Cisco MDS 9000 Family Command Reference Guide.
5 This is the number of trunking-enabled ISL ports multiplied by the number of VSANs in the switch.