Guest

Cisco MDS 9000 NX-OS and SAN-OS Software

Cisco MDS NX-OS Release 5.2 Configuration Limits

  • Viewing Options

  • PDF (46.5 KB)
  • Feedback

Table of Contents

Cisco MDS NX-OS Release 5.2(x) Configuration Limits

Cisco MDS NX-OS Release 5.2(x)
Configuration Limits

Revised: October 2014, Cisco MDS NX-OS Release 5.2(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 5.2(x) and lists the maximum configuration limits for the features.

Feature
Verified Configuration Limit for Release NX-OS 5.2(x)
Maximum Configuration Limit

VSANs

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

16 sessions

16 sessions

Domains per VSAN

60 domains per VSAN (75 domains per VSAN 1 )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)

Zone database size4

2 MB

2 MB

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 port5 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 switch6

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 whether 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 following example shows how to calculate Zone DB size for a fabric:

 
(config)# show zone status vsan 310 | Inc "Db Size" P 1
Full Zoning Database :
Db Size: 1040524 Bytes
--
Active Zoning Database :
Db Size: 962156 Bytesc
 
Now, Add 962156 with 1040524 = 2002680

2002680 / (1024 * 1024) = 1.9 MB.


This database size does not include the pending changes in a session.


5.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.

6.This is the number of trunking-enabled ISL ports multiplied by the number of VSANs in the switch.