Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manuel d'utilisateur Page 157
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Configuring Route and Traffic Balancing
308628-15.0 Rev 00
7-7
Assume that the IP routing table on the BGP router in the local AS contains two
ECMP static routes to the circuitless (virtual) interface of the BGP router in the
remote AS. One ECMP route uses interface 1; the other route uses interface 2.
Assume also that the two EBGP speakers have established a peer-to-peer session
using their circuitless (virtual) IP interfaces.
Now assume that the local EBGP speaker has received from its remote peer
advertisements for routes to three destinations: destination_1, destination_2, and
destination_3.
If you configure the local EBGP speaker for ECMP route balancing, BGP submits
one BGP route to the routing table for each BGP destination, using in turn
(round-robin) the available ECMP routes, as follows:
1.
BGP submits a BGP route to destination_1 and specifies interface 1 as the
next hop.
2.
BGP submits a BGP route to destination_2 and specifies interface 2 as the
next hop.
3.
BGP submits a BGP route to destination_3 and specifies interface 1 as the
next hop.
If you configure EBGP for traffic balancing, BGP submits multiple BGP routes,
one for each static ECMP route, as follows:
1.
BGP submits two IP routes to destination_1. One route specifies interface 1;
the second route specifies interface 2.
2.
BGP submits two IP routes to destination_2. One route specifies interface 1;
the second route specifies interface 2.
3.
BGP submits two IP routes to destination_3. One route specifies interface 1;
the second route specifies interface 2.
You can use the BCC or Site Manager to configure EBGP ECMP for route and
traffic balancing.
- Configuring IP Exterior 1
- Gateway Protocols 1
- (BGP and EGP) 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308628-15.0 Rev 00 6
- Before You Begin 15
- Text Conventions 16
- Set Trap Monitor Filters 17
- Acronyms 18
- Related Publications 20
- How to Get Help 21
- Chapter 1 23
- Border Gateway Protocol (BGP) 25
- BGP Concepts and Terminology 26
- Peer-to-Peer Sessions 27
- Interior BGP Routing 28
- IBGP Route Reflector 29
- Equal-Cost Multipath 30
- BGP Updates 30
- Path Attributes 31
- BGP/OSPF Interaction 32
- BGP-4 Confederations 33
- BGP Implementation Notes 34
- Chapter 2 37
- Starting BGP and EGP Services 37
- Deleting EGP from the Router 43
- Chapter 3 45
- Disabling and Reenabling BGP 46
- Supplying a BGP Router ID 48
- Identifying the Local AS 49
- Enabling Multihop Connections 57
- Figure 3-1. BGP Confederation 67
- Selection 69
- Best-Route Selection 71
- Chapter 4 83
- Negotiating the BGP Version 88
- Keeping the Connection Alive 90
- Specifying a Holddown Time 93
- 2.2.2.5: 95
- Setting the Route Echo Switch 100
- Configuring BGP Peers 103
- 308628-15.0 Rev 00 104
- Using Site Manager 109
- Chapter 5 111
- Topic Page 112
- Examples 118
- Announce Policy Guidelines 123
- Chapter 6 139
- Configuring a Route Reflector 139
- Configuring an RR Client 148
- Chapter 7 151
- Chapter 8 161
- Customizing EGP Services 161
- EGP Concepts and Terminology 162
- EGP Implementation Notes 165
- Customizing EGP on the Router 166
- Configuring a Neighbor 167
- Specifying the Gateway Mode 169
- Choosing the Acquisition Mode 171
- Choosing the Poll Mode 172
- Setting Neighbor Timers 173
- Appendix A 175
- Site Manager Parameters 175
- BGP Parameters 176
- BGP Configuration Parameters 177
- BGP Global Parameters 178
- BGP-3 Global Parameter 185
- BGP-4 Global Parameter 185
- BGP Peer Parameters 185
- BGP Event Message Parameters 198
- EGP Parameters 199
- EGP Neighbor Parameters 200
- Routing Policy Parameters 203
- Appendix B 257
- Regular Expression Symbols 268
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