Avaya Configuring IP, ARP, RIP, and OSPF Services Manuel d'utilisateur Page 220
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Configuring IP, ARP, RIP, and OSPF Services
6-50
117356-E Rev 00
Configuring an NSSA Address Range
To implement an NSSA, you must configure at least one type 7 address range for
summarization and filtering in the translation of type 7 LSAs to type 5 LSAs.
Each type 7 address range consists of an address/mask pair representing multiple
external networks. The NSSA border router checks for configured type 7 address
ranges and then originates a single type 5 LSA for each range. If a network is not
contained in any configured address range, type 7 LSAs are translated to type 5
LSAs directly and flooded to all non-stub areas.
Using the BCC
To configure an address range for an NSSA, navigate to the area prompt (for
example,
box; ip; ospf; area/0.0.0.2
) and enter:
nssa-range
<network>/<mask>
network
and
mask
together specify all networks that belong to the NSSA address
range. The range mask is not restricted to the natural address class mask.
To change the default values for an OSPF NSSA address range, enter:
<area_parameter> <value>
area_parameter value
is one of the parameter/value pairs described in Table 6-8.
Table 6-8. BCC Address Range Parameters for OSPF NSSA
Parameter Value Function
action advertise (default)
block
Specifies whether the border router
advertises type 5 LSAs for an NSSA address
range. An NSSA border router advertises a
single external route for each type 7 address
range when you set this parameter to
advertise.
ase-tag 0 (default)
to 16777215
Specifies the value to insert in the external
route tag field of translated type 5 LSAs
configured for a type 7 address range
state enabled (default)
disabled
Enables or disables this address range
- Configuring IP, ARP, RIP 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 117356-E Rev 00 10
- Before You Begin 17
- Text Conventions 18
- Acronyms 19
- Related Publications 21
- How to Get Help 22
- Chapter 1 23
- IP Addresses 24
- Subnet Addressing 26
- Supernet Addressing 29
- Autonomous Systems 30
- Figure 1-4. ARP Example 32
- OSPF Neighbors 35
- Neighbor Adjacencies 35
- Designated Routers 36
- OSPF Areas 37
- OSPF Router Types 39
- AS External Routes 39
- OSPF Implementation Notes 40
- Router Discovery Protocol 41
- Route Preferences 41
- Route Weights 42
- Figure 1-6. IP Routing Table 44
- IP Traffic Filters 47
- Chapter 2 49
- Starting IP Services 49
- Starting RIP 51
- Starting OSPF 52
- Starting Router Discovery 52
- Adding RIP to an IP Interface 55
- RIP advertises subnets 61
- Chapter 3 63
- Caution: 80
- Customizing an IP Interface 82
- Configuring an SMDS Address 98
- Using the BCC 101
- Using Site Manager 102
- Deleting IP from an Interface 105
- Defining a Static Route 109
- (continued) 111
- (continued) 112
- Choosing a Broadcast Type 115
- Chapter 4 119
- <state> 120
- Figure 4-1. Proxy ARP Example 125
- Chapter 5 131
- Customizing RIP Services 131
- Defining a RIP Accept Policy 154
- Chapter 6 171
- Customizing OSPF Services 171
- Figure 6-1. OSPF ASE Routes 179
- Specifying the Metric Cost 203
- Appendix A 241
- Site Manager Parameters 241
- IP Parameters 242
- IP Interface Parameters 244
- IP Global Parameters 259
- Static Route Parameters 266
- Adjacent Host Parameters 270
- Router Discovery Parameters 273
- OSPF Parameters 275
- OSPF Interface Parameters 280
- OSPF Area Parameters 289
- Area Range Parameters 293
- OSPF NSSA Range Parameters 296
- RIP Parameters 302
- Appendix B 309
- Routing Policy Parameters 309
- RIP Accept Policy Parameters 313
- OSPF Accept Policy Parameters 314
- Appendix C 331
- RIP Export Filters 335
- OSPF Import Filters 338
- OSPF Export Filters 339
- Appendix D 343
- Route Weight Worksheet 343
- Appendix E 347
- IP/OSPF Configuration Example 347
- Area 0.0.0.1STUB area 0.0.0.2 348
- Backbone 0.0.0.0 348
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