Avaya Configuring Interface and Router Redundancy Manuel d'utilisateur Page 77
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Router Redundancy Examples
114079 Rev. B B-3
Possible Complications
The following sections describe complications that can occur when you use router
redundancy.
Router Boots and Cannot Detect Another Member
If a member of a router redundancy group boots and cannot detect any other
member of its redundancy group within the bidding period, it switches roles to
become the primary router, because it is the only member from which to select the
primary.
Second Router Boots After First Router’s Bidding Timer Expires
If the first router has booted and a second router boots after the first router’s
bidding period expires, the first router may be in the process of switching roles to
become the primary router. During the switching process, the first router does not
send PDUs, so when the second router boots and begins its own bidding period, it
may not detect the first router until the first router has completed the role switch.
To avoid a situation in which both routers switch roles to become primary, set the
bidding period for a longer time than the time required to perform a role switch.
Manual versus Auto Role Switching
If the first router has booted and a second router boots after the first router’s
bidding period expires, and if you configured the router to use manual role
switching, the first router continues to act as the primary router even if the second
router would be a better primary. The software alerts you, and it is up to you to
initiate the role switch. If you configure the router to use auto role switching, the
routers perform the role switch automatically. If you configure the router to use
one-shot auto, the routers perform the role switch automatically once; after that a
switch occurs only when an interface fails or when a resource becomes
unreachable. If you configure the router to use switch on failure, a switch occurs
only when an interface fails or when a resource becomes unreachable.
During manual role switching, a secondary router switches its role to primary if it
does not detect a primary router in the group.
- Configuring Interface and 1
- Router Redundancy 1
- Bay Networks Software License 3
- (continued) 4
- Contents 5
- 114079 Rev. B 11
- About This Guide 13
- Conventions 14
- Acronyms 15
- World Wide Web 19
- Customer Service FTP 19
- CompuServe 20
- Support Source CD 20
- How to Get Help 21
- Chapter 1 23
- Interface Redundancy Overview 23
- Interface Roles 24
- Hot Standby 25
- Active Interface MAC Address 26
- Chapter 2 29
- Router Redundancy Overview 29
- Redundancy Protocol 30
- 2-4 114079 Rev. B 32
- Role Change 34
- Requirements 35
- Chapter 3 37
- Implementation Notes 37
- Protocols Supported 38
- LAN Interfaces 38
- Compatibility 40
- Chapter 4 41
- Select Edit Circuit 43
- 4-4 114079 Rev. B 44
- 114079 Rev. B 4-5 45
- 114079 Rev. B 4-7 47
- Chapter 5 49
- Configuring Router Redundancy 49
- Enabling Router Redundancy 50
- 114079 Rev. B 5-3 51
- 5-4 114079 Rev. B 52
- Click on OK 53
- 5-6 114079 Rev. B 54
- 11. Click on OK 54
- 114079 Rev. B 5-7 55
- 56
- 5-10 114079 Rev. B 58
- Configuring Router Redundancy 59
- Configuring Resources 60
- 114079 Rev. B 5-13 61
- 5-16 114079 Rev. B 64
- 114079 Rev. B 5-17 65
- 5-18 114079 Rev. B 66
- 114079 Rev. B 5-19 67
- 69
- Removing Router Redundancy 71
- Appendix A 73
- A-2 114079 Rev. B 74
- Appendix B 75
- Router Redundancy Examples 75
- Possible Scenarios 76
- Possible Complications 77
- B-4 114079 Rev. B 78
- Fast Ethernet Switches 81
- Appendix C 83
- C-2 114079 Rev. B 84
- Appendix D 85
- BOFL Parameters 85
- D-4 114079 Rev. B 88
- 114079 Rev. B Index-1 89
- 114079 Rev. B Index-3 91
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