1. CHAPTER 8 Network Management
Wilmot N. Adekoya
11/24/2018
NETWORK MANAGEMENT

2. Chapter 8 Network management
OBJECTIVE
Chapter 8 covers:
Describe how the MIB elements relate to MPLS in general
Explain how to combine these MIB elements in an operational MPLS network
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3. Chapter 8 The (Internet Draft) Standard MPLS MIBs
Closer look at IETF MPLS MIBs
Two MIBs described in the International Engineering Task Force (IFTF)
1. Multiprotocol Label Switching (MPLS) Label Switch Router (LSR) MIB
2. Multiprotocol Label Switching (MPLS) Traffic Engineering MIB
Both provide framework for managing MPLS NEs.
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4. Chapter 8 The (Internet Draft) Standard MPLS MIBs
MIBs achieve the following
-manage the low-lever MPLS objects, such as cross-connects and segment table.
-create LSPs
-manage the high-lever MPLS object, such as traffic-engineered tunnels EROs and resource blocks
LSR MIB objects table describe
A) In – segment b) Out – segment c) Label stacks,
d) Traffic parameters e) Performance parameters
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5. Chapter 8 The (Internet Draft) Standard MPLS MIBs
TE MIBs describes
Traffic-engineered tunnels
Tunnel resources
Tunnel paths
Tunnel performances
MPLS Devices
-IP routers
-ATM switches operating in SIN mode
-Multiservice switches
Ethernet
X.25
TDM IP
MPLS
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6. Chapter 8 The (Internet Draft) Standard MPLS MIBs
MPLS Interfaces include the following configurations
IP routering interface
IGP routering with TE extensions
OSPF, IS-IS-TE
EGP protocol
A signaling protocol such as LDP or RSVP-TE
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7. Chapter 8 The (Internet Draft) Standard MPLS MIBs
MPLS NETWORK EXAMPLE
See page 258
The labeling decision may base on:
Content of IP header DS field
Destination of source IP address
Destination of source port
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8. Chapter 8 The (Internet Draft) Standard MPLS MIBs
The MPLS Interface MIB Table p. 260
Relationship between interface table and the interfaces.
The MPLS In-segment MIB table p.261
Controls the forwarding of packets into the LSP
The Out-Segment MIB Table p.262
Egress leg of the LSP segment on a given MPLS NE
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9. Chapter 8 The (Internet Draft) Standard MPLS MIBs
Cross-Connects MIB Table p. 263
Create associations between LSP segments to support point-to-point, point-to-multipoint, and point-to-point connection
Label Stacks p. 265
useful for hierarchical routering
Labels beneath the topmost become accessible when the topmost one is popped.
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10. Chapter 8 The (Internet Draft) Standard MPLS MIBs
Traffic Parameter
Entries are created by the use of mplsTrafficParameterIndexN-ext object
Maximum rate are measure in unit of kilobits per second
Kilobits per second is the required rate of packet forwarding
Performance page 266
provides entry for every interface on LSR capable of supporting MPLS
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11. Chapter 8 Configuring LSP through an LSR
Enabling MPLS on MPLS-cable interfaces
Configuring in-segments on LSRs and egress LERs
Configuring out-segments on LSRs and ingress LERs.
Setting up the cross-connect table of associate segment
Configuring a tunnel object to point to the cross-connection origination and termination
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12. Chapter 8 Configuring LSP through an LSR
Optional specifying label stack actions
Optional specifying.
CRIATION AN LSP USING THE LSR MIB
Carry the non-real time SMTP traffic through the MPLS cloud
Create best effort , unidirectional LSP segment that originates in a tunnel on the MPLS Edge Routers
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13. Chapter 8 Edge Router 1cross connect and out segment Table
Three objects are required on an ingress LER
A CROSS-CONNECT
AN OUT-SEGMENT
A TUNNEL
ROUTER CONFIGURATIONS SEE PAGES
PAGE 268
PAGE 270
PAGE 271
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14. Traffic-Engineering Tunnel
Provides tunnel through MPLS clouds
Provides an end-to-end picture
Tunnels can be created at the head-end (originating) node
The MIB for all nodes in the path are automatically updated via a signaling protocol such as (RSVP)
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15. Traffic-Engineering Tunnel
TE support five tables for creating tunnels:
Tunnel table record tunnel parameters
Resource table configured end-to-end tunnel resources such as bandwidth
Tunnel hop tables
For specified, actual, and computer route
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16. The mpls Tunnel Table page 275-279
Tunnel Table Line 1-2
Unique index identified
Tunnel configurations to protect load sharing
Tunnel has its own path and reserved resources
Information of tunnel can be stored
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17. The mpls Tunnel Table page 275-279
Tunnel table lines 7 and 8
Corresponds to an interface by a value of the Boolean
Tunnel table lines 9 and 10
Signaled tunnels store the value of the signaling protocol.
Tunnel table lines 11 and 15
Setup priority of the tunnel
Characteristic of the tunnel instance are specified
Instance are restored automatically following a failure
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18. The mpls Tunnel Table pp. 275-279
Tunnel table Line 16
Indicate the entry
Indicates best –effort treatment
Tunnel Table 17
Differentiate between groups of tunnel instances
Tunnel table 18-20
Indicate administrative defined
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19. The mpls Tunnel Table pp. 275-279
Tunnel table lines 21-25
Billing and accountant proposes
Tunnel table line 26
Overall number of tunnel state transitions
Admin and operational status changing from up to down
Tunnel Table lines 27-29
Provide finer control over which link a tunnel traverses
Assigned constraint values
Constraint is zero or the link fulfills at least one constraint
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20. The mpls Tunnel Table page 275-279
Tunnel table line 30
Indicate the path chosen for the tunnel
Tunnel Table lines 31-33
Indicate the up time of the tunnel instance
Tunnel Table lines 34-35
Administratively assigned operational status of the tunnel
Indicates the value of up, down, testing, unknown
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21. The mpls Tunnel Table pp. 275-279
Tunnel table lines 36-37
Use to manage SNMP row operation against an entry
Has semantics as other tables
The mpls tunnel resource table see p.278
indicates the resources
Bandwidth, burst, size for a given tunnel
Availability of the tunnel resources
Maximum byte size
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22. The mplsTUNNEL TABLE
Pre-assigned route of path Explicit route Object (ERO)
Serve to indicate a set of hops
Called path option
Contain IPv4 address and prefix length
Contain value of IPv6 address prefix length
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23. Creating a Tunnel using the TE MIB
Traffic engineered tunnel specify both the resources and the nodes required in the path
Configuring the Tunnel
See page 281
Included single object
Last object to be set is the row status
Indication of remote agent that the operation is a row
Indicate that the row is active and ready for service
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24. SUMMARY
This chapter describes how the two IETF MPLS MIBs object can be manipulated by an NMS in order to create LSPs and Tunnels
Covers tables to configured path such as
In-segment, out-segment, cross connect and additional tunnel tables
Tunnel tables covers hop table and resource table
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25. SUMMARY
NMS table are presented in this chapter in a detail case study with manipulations.
NMS would provide a simple interface the offers a limited set of choices, for example, either LSP of a tunnel as the required connection type.
Simplifying operation is one of the many merits of effective NMS products.
Importantly, the many table needed for MPLS provisioning underlines the importance of good table insertion discipline.
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