C
HAPTER
48
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 1216 –
D
EFAULT
S
ETTING
1
C
OMMAND
U
SAGE
u
A designated router (DR) and backup designated router (BDR) are
elected for each OSPF network segment based on Router Priority. The
DR forms an active adjacency to all other routers in the network
segment to exchange routing topology information. If for any reason
the DR fails, the BDR takes over this role.
u
Set the priority to zero to prevent a router from being elected as a DR
or BDR. If set to any value other than zero, the router with the highest
priority will become the DR and the router with the next highest priority
becomes the BDR. If two or more routers are tied with the same
highest priority, the router with the higher ID will be elected.
u
If a DR already exists for a network segment when this interface comes
up, the new router will accept the current DR regardless of its own
priority. The DR will not change until the next time the election process
is initiated.
u
Configure router priority for multi-access networks only and not for
point-to-point networks.
E
XAMPLE
Console(config)#interface vlan 1
Console(config-if)#ip ospf priority 5
Console(config-if)#
ip ospf retransmit-
interval
This command specifies the time between resending link-state
advertisements (LSAs). Use the
no
form to restore the default value.
S
YNTAX
ip ospf
[
ip-address
]
retransmit-interval
seconds
no ip ospf
[
ip-address
]
retransmit-interval
ip-address
- This parameter can be used to indicate a specific IP
address connected to the current interface. If not specified, the
command applies to all networks connected to the current interface.
seconds
- Sets the interval at which LSAs are retransmitted from
this interface. (Range: 1-65535)
C
OMMAND
M
ODE
Interface Configuration (VLAN)
D
EFAULT
S
ETTING
5 seconds
Summary of Contents for DG-GS4826S
Page 2: ...DG GS4826S DG GS4850S E012011 R01 F1 2 2 0 ...
Page 4: ......
Page 6: ...ABOUT THIS GUIDE 6 ...
Page 60: ...SECTION I Getting Started 60 ...
Page 72: ...CHAPTER 1 Introduction System Defaults 72 ...
Page 90: ...CHAPTER 2 Initial Switch Configuration Managing System Files 90 ...
Page 92: ...SECTION II Web Configuration 92 u Unicast Routing on page 539 u Multicast Routing on page 595 ...
Page 138: ...CHAPTER 4 Basic Management Tasks Resetting the System 138 ...
Page 204: ...CHAPTER 6 VLAN Configuration Configuring MAC based VLANs 204 ...
Page 212: ...CHAPTER 7 Address Table Settings Clearing the Dynamic Address Table 212 ...
Page 238: ...CHAPTER 9 Rate Limit Configuration 238 Figure 106 Configuring Rate Limits ...
Page 268: ...CHAPTER 12 Quality of Service Attaching a Policy Map to a Port 268 ...
Page 368: ...CHAPTER 14 Security Measures DHCP Snooping 368 ...
Page 422: ...CHAPTER 15 Basic Administration Protocols Remote Monitoring 422 ...
Page 488: ...CHAPTER 17 IP Configuration Setting the Switch s IP Address IP Version 6 488 ...
Page 538: ...CHAPTER 20 IP Services Forwarding UDP Service Requests 538 ...
Page 594: ...CHAPTER 21 Unicast Routing Configuring the Open Shortest Path First Protocol Version 2 594 ...
Page 624: ...CHAPTER 22 Multicast Routing Configuring PIMv6 for IPv6 624 ...
Page 638: ...CHAPTER 23 Using the Command Line Interface CLI Command Groups 638 ...
Page 712: ...CHAPTER 26 SNMP Commands 712 ...
Page 720: ...CHAPTER 27 Remote Monitoring Commands 720 ...
Page 776: ...CHAPTER 29 Authentication Commands Management IP Filter 776 ...
Page 876: ...CHAPTER 34 Port Mirroring Commands Local Port Mirroring Commands 876 ...
Page 898: ...CHAPTER 37 Address Table Commands 898 ...
Page 998: ...CHAPTER 41 Quality of Service Commands 998 ...
Page 1060: ...CHAPTER 42 Multicast Filtering Commands MLD Proxy Routing 1060 ...
Page 1078: ...CHAPTER 43 LLDP Commands 1078 ...
Page 1088: ...CHAPTER 44 Domain Name Service Commands 1088 ...
Page 1164: ...CHAPTER 47 IP Interface Commands IPv6 to IPv4 Tunnels 1164 ...
Page 1260: ...CHAPTER 48 IP Routing Commands Open Shortest Path First OSPFv3 1260 ...
Page 1304: ...SECTION IV Appendices 1304 ...
Page 1310: ...APPENDIX A Software Specifications Management Information Bases 1310 ...
Page 1343: ...DG GS4826S DG GS4850S E012011 R02 F1 2 2 0 ...
Page 1344: ......