EIGRP Stub
This function is generally used with the hub and spoke topologies. Routers on the spoke websites are configured as stubs making certain they the spoke websites don’t act as a transit path for the site visitors.
A stub router will inform in EIGRP Howdy packets that it has stub function enabled and therefore no queries are despatched to stub router for any routes.
Associated – EIGRP Packet Varieties
This is one technique to sort out the well-known stuck-in-active points in EIGRP networks.
Allow us to use the topology under to configure it’s a function on Router 2.
Within the topology above we’ve got shaped EIGRP neighborship between Router 1 & 2 as under:
H Handle Interface Maintain Uptime SRTT RTO Q Cnt Seq Num
(sec) (ms)
0 9.9.12.2 Fa0/0 13 00:04:25 107 642 0 7
Now we have used the next configuration on R2:
community 1.1.1.1 0.0.0.0
community 9.9.12.0 0.0.0.3
redistribute static metric 1000 1 255 1 1500
!
interface Loopback0
ip deal with 1.1.1.1 255.255.255.255
!
interface FastEthernet0/0
ip deal with 9.9.12.2 255.255.255.252
!
interface FastEthernet1/0
ip deal with 9.9.23.2 255.255.255.0
Now we’ll configure EIGRP Stub function on R2 with following choices and examine the EIGRP routes on R1 accordingly.
- Eigrp stub Related
- Eigrp stub static
- Eigrp stub receive-only
- Eigrp stub redistributed
1: CONFIGURING EIGRP STUB CONNECTED
R2(config-router)#eigrp stub related
Verification:
Solely related subnet 1.1.1.1 is marketed to R1.Although 9.9.23.0/24 can be related community however is just not marketed because it isn’t marketed beneath EIGRP course of.
1.0.0.0/32 is subnetted, 1 subnets
D 1.1.1.1 [90/156160] through 9.9.12.2, 00:00:06, FastEthernet0/0
2: CONFIGURING EIGRP STUB STATIC
R2(config-router)#eigrp stub static
Verification:
Solely the static path to 2.2.2.2 is seen as marketed to R1.
D EX 2.2.2.2 [170/2562816] through 9.9.12.2, 00:00:07, FastEthernet0/0
3: EIGRP STUB RECEIVE-ONLY
R2(config-router)#eigrp stub receive-only
Verification:
No route is marketed to R1.
D – EIGRP, EX – EIGRP exterior, O – OSPF, IA – OSPF inter space
N1 – OSPF NSSA exterior kind 1, N2 – OSPF NSSA exterior kind 2
E1 – OSPF exterior kind 1, E2 – OSPF exterior kind 2
i – IS-IS, su – IS-IS abstract, L1 – IS-IS level-1, L2 – IS-IS level-2
ia – IS-IS inter space, * – candidate default, U – per-user static route
o – ODR, P – periodic downloaded static route, H – NHRP, l – LISP
+ – replicated route, % – subsequent hop override
Gateway of final resort is just not set
4: EIGRP STUB REDISTRIBUTED
R2(config-router)#eigrp stub redistributed
Verification:
Solely the redistribute static route is seen to be marketed.
D EX 2.2.2.2 [170/2562816] through 9.9.12.2, 00:01:07, FastEthernet0/0
Proceed Studying:
EIGRP vs OSPF : Know the distinction
