Cisco MDS SanOS Troubleshooting Guide -- Troubleshooting FICON

From DocWiki

Revision as of 04:24, 27 July 2010 by Pravraj (Talk | contribs)
Jump to: navigation, search

Fibre Connection (FICON) interface capabilities enhance the Cisco MDS 9000 Family by supporting both open systems and mainframe storage network environments. Inclusion of Control Unit Port (CUP) support further enhances the MDS offering by allowing in-band management of the switch from FICON processors.

Contents

FICON Overview

The Cisco MDS 9000 Family supports the Fibre Channel, FICON, iSCSI, and FCIP capabilities within a single, high-availability platform. Fibre Channel and FICON are different FC4 protocols and their traffic are independent of each other. If required, devices using these protocols can be isolated using VSANs. The Cisco SAN-OS FICON feature supports high-availability, scalability, and SAN extension technologies including VSANs, IVR, FCIP, and PortChannels.


Note Note: When you create a mixed environment, place all FICON devices in one VSAN (other than the default VSAN) and segregate the FCP switch ports in a separate VSAN (other than the default VSAN). This isolation ensures proper communication for all connected devices.

You can implement FICON on the following switches:

  • Any switch in the Cisco MDS 9500 Series.
  • Any switch in the Cisco MDS 9200 Series (including the Cisco MDS 9222i Multiservice Modular Switch).
  • Cisco MDS 9134 Multilayer Fabric Switch.
  • MDS 9000 Family 18/4-Port Multiservice Module.

Note Note: The FICON feature is not supported on Cisco MDS 9120, 9124 or 9140 switches, the 32-port Fibre Channel switching module, Cisco Fabric Switch for HP c-Class BladeSystem or Cisco Fabric Switch for IBM BladeCenter.

Refer to the Cisco MDS 9000 Family configuration guides for details about configuring FICON at one of the following websites:

FICON Port Numbering

With reference to the FICON feature, ports in Cisco MDS switches are identified by a statically defined 8-bit value known as the port number. A maximum of 255 port numbers are available. You can use the following port numbering schemes:

  • Default port numbers based on the chassis type
  • Reserved port numbers

The following guidelines apply to FICON port numbers:

  • Supervisor modules do not have port number assignments.
  • Chassis-wide unique port numbers should be reserved for trunking expansion (TE) ports since TE ports appear in multiple VSANs.
  • Each PortChannel must be explicitly associated with a FICON port number.
  • For individual ports in a PortChannel, the configuration of the port corresponding to the PortChannel is applied and not that of the individual port.
  • Each FCIP tunnel must be explicitly associated with a FICON port number. If the port numbers are not assigned for PortChannels or for FCIP tunnels, the associated ports will not come online.

Note Note: When you assign, change, or release a port number, the port goes offline and then back online as a result of the change.

Default FICON Port Numbering Scheme

Default FICON port numbers are assigned by the Cisco MDS SAN-OS software based on the module and the slot in the chassis. The first port in a switch always starts with a zero (0).

Table 16-1 lists the default port number assignments for the Cisco MDS 9000 Family of switches and directors

Table 16-1 Default FICON Port Numbering in the Cisco MDS 9000 Family

Product

Slot Number

Implemented Port Allocation

Unimplemented Ports

Notes

To Ports

To PortChannel/FCIP

Cisco MDS 9200 Series

Slot 1

0 through 31

64 through 89

90 through 253 and port 255

Similar to a switching module.

Slot 2

32 through 63

The first 4, 12, 16, or 24 port numbers are used in a 4-port, 12-port, 16-port, or 24-port module, and the rest remain unused. Extra 16 ports on 48-port modules are not allocated port numbers.

Cisco MDS 9222i Series

Slot 1

0 through 31

64 through 89

90 through 253 and port 255

Slot 2

32 through 63

Cisco MDS 9506 Director

Slot 1

0 through 31

128 through 153

154 through 253 and port 255

Slot 2

32 through 63

Slot 3

64 through 95

Slot 4

96 through 127

Supervisor modules are not allocated port numbers.

Slot 5

None

Slot 6

None

Cisco MDS 9134 Director

Slot 1

0 through 33

34 through 59

60 through 253 and port 255

Cisco MDS 9509 Director

Slot 1

0 through 31

224 through 249

250 through 253 and port 255

The first 4, 12, 16, or 24 port numbers are used in a 4-port, 12-port, 16-port, or 24-port module, and the rest remain unused. Extra 16 ports on 48-port modules are not allocated port numbers.

Slot 2

32 through 63

Slot 3

64 through 95

Slot 4

96 through 127

Slot 5

None

Supervisor modules are not allocated port numbers.

Slot 6

None

Slot 7

128 through 159

The first 4, 12, 16, or 24 port numbers are used for a 4-port, 12-port,16-port, or 24-port module and the rest remain unused. Extra 16 ports on 48-port modules are not allocated port numbers.

Slot 8

160 through 191

Slot 9

192 through 223

Cisco MDS 9513 Director

Slot 1

0 through 15

224 through 249

250 through 253 and port 255

The first 4, 12 or 16 port numbers are used for a 4-port, 12-port or 16-port model, and the rest remain unused.

Extra ports on 24-port, 32-port, and 48-port modules are not allocated port numbers.

Slot 2

16 through 31

Slot 3

32 through 47

Slot 4

48 through 63

Slot 5

64 through 79

Slot 6

80 through 95

Slot 7

None

Supervisor modules are not allocated port numbers.

Slot 8

None

Slot 9

96 through 111

The first 4 or 12 port numbers are used for a 4-port or 12-port module, and the rest remain unused. Extra ports on 24-port, 32-port, and 48-port modules are not allocated port numbers.

Slot 10

112through 127

Slot 11

128 through 143

Slot 12

144 through 159

Slot 13

160 through 175


Note Note: You can use the ficon slot assign port-numbers CLI command to use any excess ports by assigning numbers to the slots. Before you assign numbers to the slots however, we recommend that you review the default port number assignments for Cisco MDS 9000 switches shown in Table 16-1.


Note Note: Only Fibre Channel, PortChannel, and FCIP ports are mapped to FICON port numbers. Other types of interfaces do not have corresponding port numbers.

Reserved FICON Port Numbering Scheme

A range of 250 port numbers are available for you to assign to all the ports on a switch. Table 16-1 shows that you can have more than 250 physical ports on a switch and the excess ports do not have port numbers in the default numbering scheme. When you have more than 250 physical ports on your switch, you can have ports without port number assigned if they are not in a FICON VSAN, or you can assign duplicate port numbers if they are not used in the same FICON VSAN. For example, you can configure port number 1 on interface fc1/1 in FICON VSAN 10 and fc10/1 in FICON VSAN 20.


Note Note: A VSAN can have a maximum of 250 port numbers.


Note Note: FICON port numbers are not changed for ports that are active. You must first disable the interfaces using the shutdown CLI command.


Note Note: You can configure port numbers even when no module is installed in the slot.

FICON Configuration Files

You can save up to 16 FICON configuration files on each FICON-enabled VSAN (in persistent storage). The file format is proprietary to IBM. These files can be read and written by IBM hosts using the in-band CUP protocol. Additionally, you can use the Cisco MDS CLI or Fabric Manager applications to modify these FICON configuration files. When you enable the FICON feature in a VSAN, the switches always use the startup FICON configuration file, called IPL. This file is created with a default configuration immediately after FICON is enabled in a VSAN.

Multiple FICON configuration files with the same name can exist in the same switch, provided they reside in different VSANs. For example, you can create a configuration file named XYZ in both VSAN 1 and VSAN 3.


Caution Caution: When FICON is disabled on a VSAN, all FICON configuration files are irretrievably lost.

CUP In-Band Management

Fabric Binding

FICON Configuration Requirements

Initial Troubleshooting Checklist

Common Troubleshooting Tools in Fabric Manager or Device Manager

Common Troubleshooting Commands in the CLI

Port Swapping

Swapping Ports

FICON Issues

Cannot Enable FICON

Switch ISL Isolated

Fabric Manager or Device Manager Cannot Configure FICON

Mainframe Cannot Configure FICON

Cannot Enable FICON Port

Cannot Configure FCIP or PortChannel for FICON

FCIP fails for FICON

FICON Tape Acceleration Not Working

Rating: 0.0/5 (0 votes cast)

Personal tools