Load balancing configuration of EIGRP for daily technology sharing

Topology

Equivalent load balancing
AD identical
Metric equal
EIGRP The default support 4 Equivalent load balancing , The biggest support 6 strip .
see ：show ip protocols
R1(config-router)#maximum-paths 6（ Maximum supported entries , because ISO Different , The numbers are different ）

modify Metric value ： Change at the entrance of the routing flow direction
Modification delay ：delay value (10 usec)
for example ： When changing delay , If you want to change the delay to 2000usec
Must R3(config-if)#delay 200
Modify bandwidth ：bandwidth value （kbit）
see ：show interfaces s1/1

Offset-list: Offset list
Route different routes metric Change the value to the same , For load balancing

R3(config)#access-list 1 permit 1.1.1.0 0.0.0.0 ACL There is no need to add the following when matching routes 0.0.0.0
R3(config-router)#offset-list 1 in/out 3 Serial 1/1 This command can only be added on the original basis metric value
　　　　　　　　　　　　　　（ The original Metric + 3)

notes ： Such as offset-list Called ACL non-existent , Then all routes metric All change

Non equivalent load balancing
Premise ： The path that can be put into the routing table must be Successor or Feasible Successor, I.e. compliance FC Conditions ,show ip eigrp topology Visible path .
To configure ：
R3(config-router)#variance U （1-128） By default EIGRP Only equivalent load balancing is supported , namely variance=1
variance The value of ： The minimum FD value ×V value >= The highest FD value

FS’s FD　＜　U＊Successor’s FD
U The value is determined by yourself （1-128）
The premise is that this route must first become Feasible successor , Otherwise it will not be used for load balancing

Traffic assignment ： This command only works in non equivalent load balancing , In equivalent load balancing , The meaning of the two parameters is the same
traffic-share balanced： The traffic assigned by the router to each route is inversely proportional to its measurement
traffic-share min across-interfaces： The router will only use the least expensive route

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