Cisco Cisco IOS Software Release 12.2(27)SBC
Pseudowire Emulation Edge-to-Edge MIBs for Ethernet, Frame Relay, and ATM Services
Information About Pseudowire Emulation Edge-to-Edge MIBs for Ethernet, Frame Relay, and ATM Services
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Multiple Cisco IOS Releases
The architecture is modular in that once deployed, new emulated service MIB modules or additional
transport MIB modules “plug in” to or extend the existing infrastructure rather than require a new and
unique one. This allows you to build management applications without the concern of a new service
requiring the deployment of a completely different management strategy. Because the architecture is a
generalized association mechanism between existing service and transport MIB modules, native MIB
modules work in the absence of the associated PWE3-specific MIBs. The advantage is that if a
PWE3-specific MIB has not yet been deployed in Cisco IOS software, which associates a service or
transport with pseudowires, these MIB modules can still be queried. However, the only drawback is that
the associations with the pseudowires are absent.
transport MIB modules “plug in” to or extend the existing infrastructure rather than require a new and
unique one. This allows you to build management applications without the concern of a new service
requiring the deployment of a completely different management strategy. Because the architecture is a
generalized association mechanism between existing service and transport MIB modules, native MIB
modules work in the absence of the associated PWE3-specific MIBs. The advantage is that if a
PWE3-specific MIB has not yet been deployed in Cisco IOS software, which associates a service or
transport with pseudowires, these MIB modules can still be queried. However, the only drawback is that
the associations with the pseudowires are absent.
Components and Functions of the PWE3 MIBs
The PWE3 MIBs have the following components and functions:
•
PW-MIB (the pseudowire MIB)
This MIB binds the PW-MPLS-MIB and the PW-ENET-MIB together, and provides status of the
pseudowire emulation and statistics and configuration information. The PW-MIB also defines the
notifications for pseudowire fault and event monitoring.
pseudowire emulation and statistics and configuration information. The PW-MIB also defines the
notifications for pseudowire fault and event monitoring.
•
PW-MPLS-MIB (the pseudowire MPLS-MIB)
This MIB contains managed objects that can be used by a network manager to monitor pseudowire
emulation MPLS services, such as MPLS-traffic engineering (TE)-PSN and MPLS-non-TE-PSN.
emulation MPLS services, such as MPLS-traffic engineering (TE)-PSN and MPLS-non-TE-PSN.
This MIB shows the following:
–
Cross-connect (XC) indexes for virtual circuits (VCs) that are Label Distribution Protocol
(LDP)-signaled and have a preferred path that is not set to an MPLS TE tunnel.
(LDP)-signaled and have a preferred path that is not set to an MPLS TE tunnel.
–
Tunnel indexes for VCs with a preferred path set to a TE tunnel and an output interface that is
a TE tunnel.
a TE tunnel.
•
PW-ENET-MIB (the pseudowire Ethernet services MIB)
This MIB contains managed objects that can be used by a network manager to monitor pseudowire
emulation Ethernet services.
emulation Ethernet services.
•
PW-FR-MIB (the pseudowire Frame Relay services MIB)
This MIB contains managed objects that can be used by a network manager to monitor pseudowire
emulation Frame Relay services.
emulation Frame Relay services.
This MIB uses a Frame Relay over pseudowire (FRoPW) connection that consists of two segments:
the Frame Relay segment and the pseudowire segment. The PW-FR-MIB provides hooks to those
segments. The PW MIB contains information about the pseudowire segment, and the PW-FR-MIB
contains information about the Frame Relay segment.
the Frame Relay segment and the pseudowire segment. The PW-FR-MIB provides hooks to those
segments. The PW MIB contains information about the pseudowire segment, and the PW-FR-MIB
contains information about the Frame Relay segment.
The PW-FR-MIB is defined at the Pseudowire Service Emulation Layer and resides on top of the
generic PW-MIB as shown in
generic PW-MIB as shown in
. Therefore, the PW-FR-MIB is highly dependent on the
existence and the service provided by the PW-MIB. In addition, an existing PW-FR connection entry
must associate with an existing VC entry in the PW-MIB.
must associate with an existing VC entry in the PW-MIB.
The PW-FR-MIB and the generic PW-MIB are logically tied by the PW VC Index, which is an
internal index defined to support the PW-MIB. Each PW VC index uniquely maps into an existing
VC entry in the PW-MIB and the PW-FR-MIB.
internal index defined to support the PW-MIB. Each PW VC index uniquely maps into an existing
VC entry in the PW-MIB and the PW-FR-MIB.
•
PW-ATM-MIB (the pseudowire ATM services MIB)
This MIB contains managed objects that can be used by a network manager to monitor pseudowire
emulation ATM services.
emulation ATM services.