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Software Version 2.7.5 41
Software Version 2.7.5
C613-10454-00 REV A
OSPF Network Types
OSPF treats the networks attached to OSPF interfaces as one of the following
network types, depending on the physical media:
■ broadcast
■ non-broadcast multi-access (NBMA)
■ point-to-point
■ point-to-multipoint
■ virtual
By default, Ethernet and VLAN networks are treated as broadcast networks.
You can configure an Ethernet or VLAN interface as either a broadcast or an
NBMA network. Configure an Ethernet or VLAN interface as an NBMA
interface when:
■ some devices on the network do not support multicast addressing
■ you want to select which devices on the network are to become OSPF
neighbours, rather than allow all the devices on the network to become
OSPF neighbours
Configuring the
network type
To add an Ethernet or VLAN interface to OSPF as a broadcast network (the
default), use the command:
add ospf interface=interface [other-options...]
To add an Ethernet or VLAN interface to OSPF and set the network type to
NBMA, use the command:
add ospf interface=interface network=non-broadcast
[other-options...]
To change the network type of an existing Ethernet or VLAN interface, use the
command:
set ospf interface=interface
network={broadcast|non-broadcast} [other-options...]
To display the network type of an OSPF interface, use the command:
show ospf interface=interface full
To display the network types of all OSPF interfaces, use the command:
show ospf interface full
Neighbours on
non-broadcast
networks
When you change the network type of an Ethernet or VLAN interface from
broadcast to non-broadcast:
■ All OSPF packets are sent as unicast messages, not broadcast messages, so
neighbours need to be statically configured.
■ Any existing dynamically learned neighbours are automatically converted
to static neighbours, and will appear in any configuration script created by
using the create config command.
■ Hello messages are not transmitted until at least one static neighbour
exists.
- Software Version 2.7.5 1
- Overview of New Features 4
- MSS Clamping 5
- 8 MSS Clamping Release Note 8
- Software Version 2.7.5 9 9
- 10 MSS Clamping Release Note 10
- Syntax SHow PPP PPPoe 11
- Command changes 13
- Command Reference Updates 14
- Software Version 2.7.5 15 15
- Command Changes 18
- Syntax SHow IP 21
- DHCP Option 82 Relay 22
- Software Version 2.7.5 25 25
- Syntax SHow BOOTp RELAy 26
- IGMP Enhancements 28
- Filtering and Throttling 29
- Configuring IGMP 30
- IGMP Throttling 31
- Software Version 2.7.5 33 33
- Software Version 2.7.5 35 35
- OSPF Network Types 41
- [{FULl 45
- BGP Enhancements 46
- Automatic Summarising 48
- Aggregating Routes 50
- Software Version 2.7.5 53 53
- Syntax SHow BGP 55
- Syntax SHow BGP PEer[=ipadd] 56
- Software Version 2.7.5 59 59
- Software Version 2.7.5 61 61
- Firewall Enhancements 63
- UDP Port Timeout 65
- Software Version 2.7.5 67 67
- Software Version 2.7.5 73 73
- WAN Load Balancing 74
- VRRP Preemption Delay 75
- Software Version 2.7.5 77 77
- ..3600] [PRIOrity=1..254] 77
- Operating Principles 80
- Load Distribution Methods 81
- 1-4 Release Note 82
- WAN Load Balancing 1-5 83
- Healthcheck 84
- Assigning Weights 85
- Healthchecks 86
- Operation with Firewall 87
- 1-10 Release Note 88
- Before you 89
- Parameter Description 96
- ● eth (such as eth0, eth1) 100
- ● PPP (such as ppp0, ppp1) 100
- C613-10454-00 REV A 101
- Related Commands enable wanlb 109
- Syntax SHow WANLB 112
- Syntax SHow WANLB HEALthcheck 114
- ■ eth (such as eth0, eth1) 122
- ■ PPP (such as ppp0, ppp1) 122
- Filtering IP Routes 123
- 2-2 Release Note 124
- Introduction 125
- Types of Filters 126
- About AS Path Lists 127
- About Route Maps 127
- When to use 128
- About IP Route Filters 129
- Creating Filters 130
- Creating Route Maps for BGP 131
- How to create a route map 132
- ■ exclude the update message 133
- Example comparing 134
- AS path filter and 134
- Matching on 134
- Creating Route Maps for OSPF 138
- Creating IP Route Filters 141
- Applying Filters 142
- Applying AS path 143
- ■ prefix lists 148
- ■ AS path lists 148
- ■ route maps 148
- 2-28 Release Note 150
- [other-options] 150
- Filtering IP Routes 2-29 151
- The filtering 151
- Limitations of route 153
- Interface Routes 154
- Statically-Configured Routes 155
- Configuration Examples 156
- Using a Route Map 157
- Using an AS Path Filter 158
- Using Communities 160
- Command Reference 162
- Parameters for both 173
- Parameters for 173
- Parameters for set 176
- ■ an entire route map 181
- [PREfix=ipadd] 182
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