Difference between revisions of "Cisco OSPF"

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(Created page with "Open Shortest Path First ==Grannskap== Neighbors måste komma överens om: * Subnät/Mask * Area * Timers * Olika router-ID * Flaggor: Stub, NSSA * MTU * Authentication type...")
 
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* Authentication type
 
* Authentication type
 
* Kompatibla nätverkstyper, DR-election eller ej
 
* Kompatibla nätverkstyper, DR-election eller ej
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==Rekommendationer==
 +
* Set your maximum LSA settings to keep from killing weak boxes
 +
* Baseline your network so you know how many LSAs normally float around
 +
* Configure LSA warnings to alert of problems
 +
* Crash each type of box on your network in a lab environment so you know what it will do under stress.
  
 
==Konfiguration==
 
==Konfiguration==

Revision as of 16:46, 15 November 2015

Open Shortest Path First

Grannskap

Neighbors måste komma överens om:

  • Subnät/Mask
  • Area
  • Timers
  • Olika router-ID
  • Flaggor: Stub, NSSA
  • MTU
  • Authentication type
  • Kompatibla nätverkstyper, DR-election eller ej

Rekommendationer

  • Set your maximum LSA settings to keep from killing weak boxes
  • Baseline your network so you know how many LSAs normally float around
  • Configure LSA warnings to alert of problems
  • Crash each type of box on your network in a lab environment so you know what it will do under stress.

Konfiguration

router ospf [process-id]

router-id for this OSPF process (in IP address format)

router-id [OSPF router-id] 
log-adjacency-changes

Enable routing on an IP network

network [network-number] [wildcard-mask] area [area-id]

Enable MD5 authentication in Area 0

area 0 authentication message-digest

Enable OSPF authentication on an interface

interface [interface]
ip ospf message-digest-key 10 md5 [password]
exit

Suppress routing updates on an interface

passive-interface [interface]
default-information originate
interface [interface]
ip ospf priority [number]
exit

ABR Summarization

router ospf 1
area 10 range 10.10.0.0 255.255.252.0
exit

ASBR Summarization

router ospf 1
summary-address 10.10.0.0 255.255.252.0
exit
router ospf 1
auto-cost reference-bandwidth 1000
exit

loopback - ospf

ip ospf network point-to-point
exit

Troubleshoot

show ip ospf neighbor
ping 224.0.0.5
show ip ospf interface brief
show ip protocols