By Denise Donohue
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You can, however, use different passwords for different interfaces. © 2010 Pearson Education, Inc. All rights reserved. This publication is protected by copyright. Please see page 156 for more details. [ 60 ] CCNP ROUTE 642-902 Quick Reference by Denise Donohue CHAPTER 3 OSPF Router(config)# int gi0/0 Router(config-if)# ip ospf authentication-key simple Router(config-if)# ip ospf authentication Router(config-if)# ! ” Note that the commands are slightly different. The optional keyword message-digest is required in two of the commands, and a key number must be specified.
When a summary is produced, a matching route to null0 also becomes active as a loop prevention mechanism. Configure a summary route out a particular interface using the ip summary-address eigrp autonomous_system command. 0/22 out Serial0/0/0 for EIGRP AS 7. 0 ! 0 Load Balancing EIGRP, like most IP routing protocols, automatically load balances over equal metric paths. What makes EIGRP unique is that you can configure it to proportionally load balance over unequal metric paths. The variance command is used to configure load balancing over up to six loop-free paths with a metric lower than the product of the variance and the best metric.
N Link State Update (LSU): Contains a full LSA entry. An LSA includes topology information; for example, the RID of this router and the RID and cost to each neighbor. One LSU can contain multiple LSAs. n Link State Acknowledgment (LSAck): Acknowledges all other OSPF packets (except Hellos). 6 for all OSPF DRs. © 2010 Pearson Education, Inc. All rights reserved. This publication is protected by copyright. Please see page 156 for more details. [ 47 ] CCNP ROUTE 642-902 Quick Reference by Denise Donohue CHAPTER 3 OSPF OSPF Neighbor Relationships OSPF routers send out periodic multicast packets to introduce themselves to other routers on a link.