8.1.2 Lab - Troubleshoot OSPFv2 - ILM

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8.1.2 Lab - Troubleshoot OSPFv2 - ILM.docx (340.34 KB, 下载次数: 5, 售价: 10 个鸿鹄币)

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OSPFv2

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Example Enabling OSPFv2 on an Interface
In the following example, OSPFv2 is configured explicitly on GigabitEthernet interface 0/0/0:

Device(config)# interface GigabitEthernet 0/2/1
Device(config-if)# bandwidth 10000
Device(config-if)# ip address 172.16.1.1 255.255.255.0
Device(config-if)# ip ospf hello-interval 1
Device(config-if)# ip ospf 1 area 0
When the show ip ospf interface command is entered, the following output shows that GigabitEthernet interface 0/0/0 was configured in interface configuration mode to run OSPFv2. The secondary IP addresses on the interface will also be advertised:

Device# show ip ospf interface GigabitEthernet 0/2/1
GigabitEthernet0/0/0 is up, line protocol is up
  Internet Address 172.16.1.1/24, Area 0
  Process ID 1, Router ID 172.16.11.11, Network Type BROADCAST, Cost: 10
  Enabled by interface config, including secondary ip addresses
  Transmit Delay is 1 sec, State DR, Priority 1
  Designated Router (ID) 172.16.11.11, Interface address 172.16.1.1
  Backup Designated router (ID) 172.16.22.11, Interface address 172.16.1.2
  Timer intervals configured, Hello 1, Dead 4, Wait 4, Retransmit 5
    oob-resync timeout 40
    Hello due in 00:00:00
  Supports Link-local Signaling (LLS)
  Index 2/2, flood queue length 0
  Next 0x0(0)/0x0(0)
  Last flood scan length is 1, maximum is 1
  Last flood scan time is 0 msec, maximum is 0 msec
  Neighbor Count is 1, Adjacent neighbor count is 1
    Adjacent with neighbor 172.26.22.11  (Backup Designated Router)
  Suppress hello for 0 neighbor(s)

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You can configure the following optional parameters for OSPFv2 in router configuration mode:



Command
Purpose
distance number



Example:

switch(config-router)# distance 25

Configures the administrative distance for this OSPFv2 instance. The range is from 1 to 255. The default is 110.

log-adjacency-changes [ detail ]



Example:

switch(config-router)# log-adjacency-changes

Generates a system message whenever a neighbor changes state.

maximum-paths path-number



Example:

switch(config-router)# maximum-paths 4

Configures the maximum number of equal OSPFv2 paths to a destination in the route table. This command is used for load balancing. The range is from 1 to 64. The default is 8.

passive-interface default



Example:

switch(config-router)# passive-interface default

Suppresses routing updates on all interfaces. This command is overridden by the VRF or interface command mode configuration.

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