11-12-2013 10:11 AM - edited 03-07-2019 04:34 PM
Hi All,
I have a simple topology ,running EIGRP internally.
Advertising VLAN 1 in top four devices R1,R2,SW1 and SW2. ( topology attached)
BUT not adversting L0 IP scope in R1 router.
SW3 acts as L2 switch and 192.168.10.1 is set to default gateway on SW3.
to reach 192.168.10.254 ,static router added in SW1 and SW2. - works fine !!!
ip route 192.168.10.254 255.255.255.255 192.168.10.1 ( point to R1 VLAN 1 IP ).
Issue:
I was not able to reach 192.168.10.254 from SW3 switch
then I added static router "ip route 192.168.10.254 255.255.255.255 192.168.10.1" - NO luck.
I simplely add "network 192.168.10.254 0.0.0.0" under EIGRP of R1 and able to reach the IP from SW3.
Doubts
why SW3 could not reach L0 ip , since we have static entry and that is connected router on R1.
did I miss somthing here ,please guide me :-).
Thanks
Sri
11-12-2013 04:44 PM
Hi,
Can you share your R1 config- I would like to see how you have configured the eigrp.
Regards,
Alex.
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11-12-2013 10:12 PM
Hi Alex,
I dont wanna advertise 192.168.10.192/26 whole subnet.
Routing config of all devicess
R1#sh run | s r ei
network 192.168.10.0 0.0.0.63
network 192.168.10.254 0.0.0.0
SW1# sh run | be ei
network 192.168.10.0 0.0.0.63
network 10.20.1.0 0.0.0.255
ip route 192.168.10.254 255.255.255.255.255 192.168.10.1
SW2# sh run | be ei
network 192.168.10.0 0.0.0.63
network 10.20.1.0 0.0.0.255
ip route 192.168.10.254 255.255.255.255.255 192.168.10.1
SW3# sh run | i gate
ip default-gate 192.168.10.1
11-12-2013 05:04 PM
There is only 1 network in your diagram, why do you need routing here ?
11-12-2013 10:13 PM
We have two different subnets ..
network 192.168.10.1/26
netowrk 192.168.10.192/26
11-12-2013 11:09 PM
hi Kanth,
Your question and topology are confusing. please elaborate it more clearer.
regards
11-13-2013 03:29 AM
Hi Riyaaz,
Two networks defined on R1 router
network 192.168.10.1/26 (VLAN 1)
netowrk 192.168.10.192/26 (Loopback 0)
I dont have advertise L0 subnet in EIGRP. and make it reachable from all switches (may be with static route)
thanks
sri
11-13-2013 04:52 AM
Sri,
When you configure loop0
!
int loop 0
desc R1-loop0
ip address 192.168.10.254 255.255.255.192
no shut
!
Then you advertise this interface/network in EIGRP
!
router eigrp 1
network 192.168.10.254 0.0.0.0
!
Although you are defining the eigrp network state,ment as a HOST (0.0.0.0 mask)
The subnet that the interface belongs to gets advertised
IE// You will be advertising 192.168.10.192/26
Make sure you have added a couple of commands
!
ip subnet-zero
!
router eigrp 1
no auto-summary
!
Regards,
Alex.
Please rate useful posts.
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