Task 3.8

This question is contradicting question 3.7 which says "ensure connectivity remains throughout the eigrp domain if one of the circuits between r1,r3 and r5 goes down".

Before configuring "stub":

Rack1R3#sh ip ei topology 150.1.6.0 255.255.255.0
IP-EIGRP (AS 10): Topology entry for 150.1.6.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 26649600
Routing Descriptor Blocks:
187.1.235.5 (Serial1/1.235), from 187.1.235.5, Send flag is 0x0
Composite metric is (26649600/26137600), Route is External
Vector metric:
Minimum bandwidth is 100 Kbit
Total delay is 41000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
External data:
Originating router is 150.1.6.6
AS number of route is 0
External protocol is Connected, external metric is 0
Administrator tag is 0 (0x00000000)
187.1.235.2 (Serial1/1.235), from 187.1.235.2, Send flag is 0x0
Composite metric is (27161600/26649600), Route is External
Vector metric:
Minimum bandwidth is 100 Kbit
Total delay is 61000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 3
External data:
Originating router is 150.1.6.6
AS number of route is 0
External protocol is Connected, external metric is 0
Administrator tag is 0 (0x00000000)


After configuring stub, R2 is no more a feasible successor for R6 loopback:

Rack1R3#sh ip ei topology 150.1.6.0 255.255.255.0
IP-EIGRP (AS 10): Topology entry for 150.1.6.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 26649600
Routing Descriptor Blocks:
187.1.235.5 (Serial1/1.235), from 187.1.235.5, Send flag is 0x0
Composite metric is (26649600/26137600), Route is External
Vector metric:
Minimum bandwidth is 100 Kbit
Total delay is 41000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
External data:
Originating router is 150.1.6.6
AS number of route is 0
External protocol is Connected, external metric is 0
Administrator tag is 0 (0x00000000)

Am i right ?

Comments

  • I think you are wrong, "eigrp stub" command does not modify metrics or maximum paths number, it only blocks EIGRP query messages in the event of a network failure.

    Routes are advertised normally as long they fit in the eigrp stub command options.
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