12-18-2022 03:56 AM
HI
ive just been looking at EIGRP stub's. I thought I'd break it down to a simple topology to confirm what i was seeing. So theres a loopback address on router 1 which i've shut down, from router 2 you can see that router 3 is a stub and supressing queries but on the debug on r3 im seeing a query message ?
12-18-2022 04:06 AM
can you share the config of router
12-18-2022 04:07 AM
HI
!
router eigrp 100
network 0.0.0.0
eigrp stub receive-only
!
ip forward-protocol nd
!
Thats the eigrp config on router 3
12-18-2022 04:19 AM
I run same lab
and as you can see only hello there is no quires.
are you sure you add receive-only <<-
12-18-2022 04:34 AM
Yup just double checked it, also removed receive only so its only using the default connected and summary...weird i wonder if its the router image - i might try another one. I thought maybe it was the debug i was using - debug eigrp packet query -
12-18-2022 06:41 AM
can you more elaborate ?
12-19-2022 01:11 AM - edited 12-19-2022 01:11 AM
Hello
Just to confirm, if R3 is the only configured as a stub then you shouldn’t see any query, however you should see a update depending on the debug you are running.
debug eigrp packets query ( only set to see capture query’s)
Can you try then following the shutdown the loopback on R1:
R3
undebug all
conf t
router eigrp x
eigrp stub connected
exit
debug eigrp packets terse
(this should show any querys & updates but no hellos) and if you still see querys on R3 then it may well be software related
R2
Should receive update from R1 and send it R3, but it wont send a query to R3
Should send query to R1
R3
Should receive update from R2 but it wont send a query to R2
12-20-2022 11:53 AM
HI - tried it with a different image and got the same - I'm wondering if its got something to do with the images I'm using - this is the output from a different image from router 3 - this was immediately after i shut the far left interface down
router eigrp 1
network 0.0.0.0
auto-summary
eigrp stub connected
!
ip forward-protocol nd
!
*Mar 1 00:07:34.655: EIGRP: Received Sequence TLV from 10.0.0.1
*Mar 1 00:07:34.659: 10.0.0.2
*Mar 1 00:07:34.659: address matched
*Mar 1 00:07:34.659: clearing CR-mode
*Mar 1 00:07:34.659: EIGRP: Received CR sequence TLV from 10.0.0.1, sequence 16
*Mar 1 00:07:34.695: EIGRP: Received UPDATE on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:34.695: AS 1, Flags 0x2, Seq 16/0 idbQ 0/0 iidbQ un/rely 0/0 pee rQ un/rely 0/0, not in CR-mode, packet discarded
*Mar 1 00:07:35.123: EIGRP: Received UPDATE on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.127: AS 1, Flags 0x0, Seq 16/8 idbQ 0/0 iidbQ un/rely 0/0 pee rQ un/rely 0/0
*Mar 1 00:07:35.127: EIGRP: Enqueueing ACK on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.127: Ack seq 16 iidbQ un/rely 0/0 peerQ un/rely 1/0
*Mar 1 00:07:35.131: EIGRP: Sending ACK on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.131: AS 1, Flags 0x0, Seq 0/16 idbQ 0/0 iidbQ un/rely 0/0 pee rQ un/rely 1/0
*Mar 1 00:07:35.143: EIGRP: Enqueueing QUERY on FastEthernet0/1 iidbQ un/rely 0 /1 serno 6-6
*Mar 1 00:07:35.147: EIGRP: Enqueueing QUERY on FastEthernet0/1 nbr 10.0.0.1 ii dbQ un/rely 0/0 peerQ un/rely 0/0 serno 6-6
*Mar 1 00:07:35.147: EIGRP: Sending QUERY on FastEthernet0/1
*Mar 1 00:07:35.151: AS 1, Flags 0x0, Seq 10/0 idbQ 0/0 iidbQ un/rely 0/0 ser no 6-6
*Mar 1 00:07:35.243: EIGRP: Received ACK on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.243: AS 1, Flags 0x0, Seq 0/10 idbQ 0/0 iidbQ un/rely 0/0 pee rQ un/rely 0/1
*Mar 1 00:07:35.247: EIGRP: FastEthernet0/1 multicast flow blocking cleared
*Mar 1 00:07:35.311: EIGRP: Received REPLY on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.315: AS 1, Flags 0x0, Seq 18/10 idbQ 0/0 iidbQ un/rely 0/0 pe erQ un/rely 0/0
*Mar 1 00:07:35.315: EIGRP: Enqueueing ACK on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.315: Ack seq 18 iidbQ un/rely 0/0 peerQ un/rely 1/0
*Mar 1 00:07:35.319: EIGRP: Sending ACK on FastEthernet0/1 nbr 10.0.0.1
*Mar 1 00:07:35.319: AS 1, Flags 0x0, Seq 0/18 idbQ 0/0 iidbQ un/rely 0/0 pee rQ un/rely 1/0
12-20-2022 12:04 PM
please share the config of the three routers
12-20-2022 12:32 PM
12-20-2022 01:21 PM - edited 12-20-2022 03:43 PM
in R2 I config eigrp stub connect <<- this make R2 only advertise the connect route.
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