| OID symbolic | OID numeric | Type | Access | Description |
|---|
| ciscoFcSdvMIB | 1.3.6.1.4.1.9.9.593 | | | This MIB instrumentation is for managing Fibre
Channel (FC) SAN Device Virtualization (SDV)
solution on Cisco Fibre Channel devices.
Glossary of the terms used in this MIB:
---------------------------------------
Config Commit - User initiated action that triggers
commiting of configuration to local
device/fabric. Eg. CFS based config
'commit' as described in CISCO-CFS-MIB.
Domain - The highest or most significant
hierarchical level in the three-level
FC addressing hierarchy.
Device Aias - is a string which can be used to alias a
World Wide Name (WWN).
FCID - Fibre Channel Address ID. A 24 bit Fabric
unique address identifier.
FCNS - Fibre Channel Name Server.
Initiator - The system component that originates an
I/O command over an I/O bus or network.
NWWN - WWN associated with FC node.
PWWN - WWN associated with FC port.
Real Device - A hardware entity which includes Link
Control facility. It is directly
connected to a FC fabric and acts as
originator/responder or both.
RSCN - Registered State Change Notification.
RSCN Notifications are sent to Nx_ports
and other switches to notify that an
event has occurred.
SW_RSCN - Switch Registered State Change
Notification. SW_RSCN Notifications are
sent to neighbouring switches in a
fabric to notify that an event has
occurred.
SCSI - Acronym for Small Computer System
Interface.
Target - The system component that receives a
SCSI I/O command command.
Virtual Device - The virtual initiator/target having its
(VD) own device identity and proxies a Real
Device (Initiator/Target) in a FC fabric.
VT - Virtual Target.
VI - Virtual Initiator.
Virtual Domain - A logical Domain partition in a FC fabric
within which a Virtual Device exists.
VSAN - Virtual Storage Area Network, similar
to a VLAN.
WWN - Wide Name (WWN) associated with
a Fibre Channel (FC) entity. A 64 bit
identifier, with a 60 bit value preceded
with a four bit
Network_Address_Authority_Identifier,
used to identify physical entities in
Fibre Channel.
The primary motivation for SAN Device Virtualization
is the High availability of storage disk arrays with
no downtime. Redundancy is achieved by duplication
of information and hardware to ensure secondary
device can take over the function of a primary
device when the latter fails. The initiators
(servers) perform I/O to the primary target.
The secondary target is kept in sync to have a
mirrored copy of the primary target by a replication
mechanism. In the event of a disruption to primary
target, all I/O must be immediately re-routed to
secondary target so that services running on
initiators remain un-interrupted. The SDV solution
resides on a Cisco FC Switching Device. The target
failover is achieved by presenting a virtual proxy
target to initiator with the SDV acting as a conduit
for creating and deleting the proxy (virtual)
target on demand. The Virtual Target or in general
Virtual Device can virtualize (proxy) set of Real
Devices with one Real Device actively mapped as the
primary mapping and the rest as secondary mappings.
WWN2,FCID2
_____
| |
[Switch Fabric] /| RT1 |
''''''''''''''' / |_____|
WWN1,FCID1 ' ' / [Primary Real
____ ' WWN4,FCID4 ' / Target Device]
| | ' +~~~~~~~+__'_/
| I |->--->'->| VT |__'_
|____| ' +~~~~~~~+ ' \
[Real Host ' ' \{On Fail-Over}
(Initiator)] ' ' \ WWN3,FCID3
''''''''''''''' \ _____
[VT: Virtual Target] \| |
| RT2 |
|_____|
[Secondary Real
Target Device]
->-
In the above figure (Fig 1), 'Switch Fabric'
presents the Virtual Target 'VT' as a proxy device
for real targets 'RT1' and 'RT2'. The Host/Initiator
'I' can discover a virtual target VT and does not
see real targets RT1 and RT2 as accessible targets.
The Virtual Target VT is configured on the switch
and maps to one real target as a primary mapping.
The Initiator performs I/O with VT. When the primary
target RT1 fails, the secondary real target RT2 can
take over. For the Initiator, failover/migration is
transparent and continues to perform I/O with VT.
___ ____ ____
| |-->--[I->VT]-----[ ]---->--[I->T]---| |
| I | [ VT ] | RT |
| | [ ] | |
|___|-->-
When the Initiator 'I' performs I/O with VT, the
SDV enabled switch performs FCID address translation
to route FC frames to the real target RT (refer
Fig 2). The I->VT frames are translated as I->T.
The T->I frames are translated as VT->I. The SDV
manages VT so that other devices (in the same zone)
perceive it as just another device in the fabric.
The cFcSdvVirtDeviceTable is table of Virtual Devices.
The cFcSdvVirtRealDevMapTable is a table of mapping
elements.
A Virtual Device is represented by a row in the
cFcSdvVirtDeviceTable, and if its value of
cFcSdvVdRealDevMapList has the value of zero,
then the Virtual Device is not currently mapped to
any Real Devices. Otherwise, the Virtual Device is
mapped to the set of Real Devices with each Real
Device identified by the instance indentifier value
of cFcSdvVirtRealDevMapIndex. |
| ciscoFcSdvMIBNotifs | 1.3.6.1.4.1.9.9.593.0 | | | |
| ciscoFcSdvMIBObjects | 1.3.6.1.4.1.9.9.593.1 | | | |
| cFcSdvConfig | 1.3.6.1.4.1.9.9.593.1.1 | | | |
| cFcSdvVirtDeviceTable | 1.3.6.1.4.1.9.9.593.1.1.1 | | not-accessible | This table lists all the virtual devices configured
on this device.
The successful creation of a row in this table,
through the use of the cFCSDMVdRowStatus object,
followed by the 'Config Commit' will also cause
the creation of rows in other tables. Specifically:
- The Creation of Device Alias: An entry in the
'cfdaConfigTable' of CISCO-FC-DEVICE-ALIAS-MIB
gets created by the agent with the value of the
cFcSdvVdName as the instance identifier value of
cfdaConfigDeviceAlias, 'pwwn' as the value of
cfdaConfigDeviceType and the value of cFcSdvVdPwwn
as the value of cfdaConfigDeviceId. An attempt
to create an already existing Device Alias entry
mapping to different Real Device would fail and
hence results in failure to add Virtual Device
entry in this table. In general, any failure in
Device Alias creation/deletion will have
corresponding effect of Virtual Device creation
/deletion respectively.
Similarly the deletion of a row in this table causes
deletion of corresponding rows in other tables.
Specifically:
- An entry in the 'cfdaConfigTable' of
CISCO-FC-DEVICE-ALIAS-MIB that corresponding to
the value of cFcSdvVdName is deleted.
Once a Virtual Device gets created successfully,
such a device is available for zone configuration.
The Virtual Device added as Device Alias can be
used to create the zones and zoneSets using
CISCO-ZS-MIB. The Device Alias is identified as
the 'deviceAlias' type of ZoneMemberType in all
occurrences of usage of ZoneMemberType in the
zoning tables. |
| cFcSdvVirtDeviceEntry | 1.3.6.1.4.1.9.9.593.1.1.1.1 | | not-accessible | An entry (conceptual row) in the
cFcSdvVirtDeviceTable.
Each entry represents a Virtual Device in a
specific VSAN.
+-------+---------+---
|VdIndex|
+-------+---------+----
| maps to
|
+--|----+-------------------+--------------------+-----------------+--
| |____|VirtRealDevMapIndex|VirtRealDeviceIdType| VirtRealDeviceId|..
|vdIndex| | | |
+-------+-------------------+--------------------+-----------------+--
->-
The above figure (Fig 3) depicts the relationship
that this conceptual row has with conceptual rows
of the other tables for configuring the virtual
device.
The deletion of a row in this table also causes the
deletion of all the Real Device mapping entries for
the same combination of vsanIndex and cFcSdvVdIndex
in the cFcSdvVirtRealDevMapTable. |
| U32 cFcSdvVdIndex | 1.3.6.1.4.1.9.9.593.1.1.1.1.1 | Unsigned32 | not-accessible | An arbitrary index number of a Virtual Device.
This instance value uniquely identifies a Virtual
Device within the context of a particular VSAN and
in the agent where an instance of this MIB
instrumentation is running. |
| STR cFcSdvVdName | 1.3.6.1.4.1.9.9.593.1.1.1.1.2 | SnmpAdminString | read-create | A human readable string representing the name of
this Virtual Device. The value of cFcSdvVdName
should be unique in the system. |
| DOM cFcSdvVdVirtDomain | 1.3.6.1.4.1.9.9.593.1.1.1.1.3 | DomainIdOrZero | read-create | The user preference for a persistent Domain Id
for this Virtual Device to indicate a specific
partition (domain) of the Fabric that this
Virtual Device should belong to.
If the value of this object is not explicitly set
by the user, the system generates and uses a
Virtual Domain from the allowed domains. The value
of '0' indicates no user preference. |
| ADR cFcSdvVdFcId | 1.3.6.1.4.1.9.9.593.1.1.1.1.4 | FcAddressId | read-create | The user preference for a persistent 'FCID' for
this Virtual Device.
The value of the corresponding instance of
cFcSdvVdVirtDomain specifies the Domain identifier
part of the FCID. When the values for both
cFcSdvVdVirtDomain and cFcSdvVdFcId are specified
during row creation, the Domain ID part of
cFcSdvVdFcId value should exactly match the value
of cFcSdvVdVirtDomain.
If the value of this object is not explicitly set
by the user, the system generates and uses a
FCID for this Virtual Device. The value of
'000000'h indicates no user preference. |
| FCN cFcSdvVdPwwn | 1.3.6.1.4.1.9.9.593.1.1.1.1.5 | FcNameIdOrZero | read-only | The assigned 'PWWN' for this Virtual Device.
The agent assigns this value when the
configuration is committed. |
| FCN cFcSdvVdNwwn | 1.3.6.1.4.1.9.9.593.1.1.1.1.6 | FcNameIdOrZero | read-only | The assigned 'NWWN' for this Virtual Device.
The agent assigns this value when the
configuration is committed. |
| ADR cFcSdvVdAssignedFcId | 1.3.6.1.4.1.9.9.593.1.1.1.1.7 | FcAddressId | read-only | The assigned 'FCID' of this Virtual Device. The
agent assigns this value when the configuration is
committed and the Real Device that this Virtual
Device virtualizes (corresponding entry in the
cFcSdvVirtRealDevMapTable where the
value of cFcSdvVirtRealDevMapType is
'primaryDevMap') is on-line. |
| FCL cFcSdvVdRealDevMapList | 1.3.6.1.4.1.9.9.593.1.1.1.1.8 | FcList | read-only | The set of Real Device(s) that this Virtual Device
virtualizes in this VSAN.
The Real Devices are identified by the instance
identifier object cFcSdvVirtRealDevMapIndex in the
cFcSdvVirtRealDevMapTable.
If a particular bit has a value of '1', then the
corresponding Real Device (indicated by the position
of bit and represented by cFcSdvVirtRealDevMapIndex)
is mapped for virtualization for this Virtual Device.
The bit value of '0' indicates that particular Real
Device is not mapped for virtualization in this
Virtual Device.
This object is read-only; changes to its value
are made by the agent as and when associated
entries are created/deleted in the
cFcSdvVirtRealDevMapTable.
The default value is the zero length string. |
| STO cFcSdvVdStorageType | 1.3.6.1.4.1.9.9.593.1.1.1.1.9 | StorageType | read-create | The storage type for this conceptual row.
Conceptual rows having the value of this object as
'readOnly' can not be deleted by the user by setting
the value of cFcSdvVdRowStatus to 'destroy'. |
| ROW cFcSdvVdRowStatus | 1.3.6.1.4.1.9.9.593.1.1.1.1.10 | RowStatus | read-create | The status of this conceptual row. The value of
this object can not be set to 'active' unless the
value of the corresponding instance of cFcSdvVdName
is unique across all the VSANs in the system.
Once value of this object is set to 'active', the
value of the corresponding instance of cFcSdvVdName
can not be modified.
Once value of this object is set to 'active', the
setting the values of the corresponding instance of
cFcSdvVdVirtDomain and cFcSdvVdFcId will take effect
and results into FCID/Domain allocation only after
the Virtual Device comes on-line the next time. |
| cFcSdvVirtRealDevMapTable | 1.3.6.1.4.1.9.9.593.1.1.2 | | not-accessible | This table provides list of Real Devices which
are mapped to Virtual Device for Device
Virtualization. |
| cFcSdvVirtRealDevMapEntry | 1.3.6.1.4.1.9.9.593.1.1.2.1 | | not-accessible | An entry (conceptual row) in the
cFcSdvVirtRealDevMapTable. Each entry represents a
Real Device(s) mapped to a Virtual Device for
virtualization within the scope of a VSAN.
When the Real Device represented by an entry in
this table whose instance of cFcSdvVirtRealDevMapType
is 'primaryDevMap' comes on-line, the corresponding
Virtual Device that virtualizes such Real Device
also comes on-line and registers itself as one
of logged-in devices in the FCNS database - an
entry into 'fcNameServerTable' of CISCO-NS-MIB
and SW_RSCN and RSCN are appropriately generated. |
| U32 cFcSdvVirtRealDevMapIndex | 1.3.6.1.4.1.9.9.593.1.1.2.1.1 | Unsigned32 | not-accessible | An arbitrary index number to identify a Real
Device(s) mapped to a Virtual Device.
This instance value uniquely identifies a
Real Device mapping entry for Virtual Device
within the context of a particular VSAN and
in the agent where an instance of this MIB
instrumentation is running.
When an entry is successfully created in this table,
the agent uses this instance identifier value to
update the value of cFcSdvVdRealDevMapList of
cFcSdvVirtDeviceTable to indicate that this
Real Device(s) entry is mapped for virtualization in
a Virtual Device (represented by cFcSdvVdIndex). |
| CIS cFcSdvVirtRealDeviceIdType | 1.3.6.1.4.1.9.9.593.1.1.2.1.2 | CiscoFcSdvDevIdType | read-create | The type of Real Device identifier represented
by the value of the corresponding instance of
'cFcSdvVirtRealDeviceId' that this Virtual Device
virtualizes to. |
| CIS cFcSdvVirtRealDeviceId | 1.3.6.1.4.1.9.9.593.1.1.2.1.3 | CiscoFcSdvDevId | read-create | This object represents a Real Device(s) identifier
that this Virtual Device virtualizes.
A Real Device element represented by the combination
of value of this object preceded by the value of
corresponding instance of cFcSdvVirtRealDeviceIdType
should be unique for a Virtual Device within a VSAN.
When the value of the corresponding instance of
cFcSdvVirtRealDeviceIdType is 'singleDevDevAlias',
the value of this object is the name of a Device
Alias pointing to a specific entry identified by
the instance identifier value of
'cfdaConfigDeviceAlias' of cfdaConfigTable in
the CISCO-FC-DEVICE-ALIAS-MIB. |
| CIS cFcSdvVirtRealDevMapType | 1.3.6.1.4.1.9.9.593.1.1.2.1.4 | CiscoFcSdvRealDevMapType | read-create | The mapping association type of the Real Device(s)
(Initiator/Target). There can only be one instance
of this object within a context of a vsan, virtual
device and MapID that can be marked as
'primaryDevMap'. The rest of the instances can only
be 'secondaryDevMap'. |
| STO cFcSdvVirtRealDevMapStorageType | 1.3.6.1.4.1.9.9.593.1.1.2.1.5 | StorageType | read-create | The storage type for this conceptual row.
Conceptual rows having a value of 'readOnly' need
not allow write-access to any of the columnar
objects of the same row. |
| ROW cFcSdvVirtRealDevMapRowStatus | 1.3.6.1.4.1.9.9.593.1.1.2.1.6 | RowStatus | read-create | The status of this conceptual row. The value of
this object can not be set to 'active' unless the
value of the corresponding instance of
cFcSdvVirtRealDeviceIdType and cFcSdvVirtRealDeviceId
is unique for a virtual device within a VSAN. Once
value of this object is set to 'active', the values
of the corresponding instance of
cFcSdvVirtRealDeviceIdType and cFcSdvVirtRealDeviceId
can not be modified. |
| ciscoFcSdvMIBConform | 1.3.6.1.4.1.9.9.593.2 | | | |
| ciscoFcSdvMIBCompliances | 1.3.6.1.4.1.9.9.593.2.1 | | | |
| ciscoFcSdvMIBCompliance | 1.3.6.1.4.1.9.9.593.2.1.1 | | | The compliance statement for entities which
implement CISCO-FC-SDV-MIB. |
| ciscoFcSdvMIBGroups | 1.3.6.1.4.1.9.9.593.2.2 | | | |
| ciscoFcSdvConfigGroup | 1.3.6.1.4.1.9.9.593.2.2.1 | | | A collection of objects for FC SDV configuration. |
