03-22-2020 01:43 PM
i configured the following topology as bgp concerned every thing work fine but r1 cant ping any outside address except r6 f0/0 address and i cant see the 1.1.1.1 loopback of r1 address in any router routing table how i can advertise that , here is my configuration can you help me spot the issue thanks
R1(config-router)#do sh run | s eigrp 10
router eigrp 10
network 1.1.1.1 0.0.0.0
network 10.1.12.0 0.0.0.255
network 10.1.13.0 0.0.0.255
auto-summary
R3(config-router)#do sh run | b router
router eigrp 10
network 2.2.2.2 0.0.0.0
network 10.1.13.0 0.0.0.255
network 0.0.0.0
auto-summary
!
router bgp 10
no synchronization
bgp log-neighbor-changes
network 2.2.2.2 mask 255.255.255.255
network 10.1.13.0 mask 255.255.255.0
network 10.1.35.0 mask 255.255.255.0
redistribute connected
neighbor 10.1.35.5 remote-as 20
neighbor 10.1.36.6 remote-as 30
no auto-summary
ip route 0.0.0.0 0.0.0.0 Null0
03-22-2020 03:01 PM
You need to advertise 1.1.1.1/32 out via BGP on R3 and R2. Under BGP add:
network 1.1.1.1 mask 255.255.255.255
just like you have done for 2.2.2.2
HTH.
03-23-2020 12:35 AM - edited 03-23-2020 12:37 AM
Hello
Your topology is hard to understand currently.
Are R2/R3 dual eigrp and bgp rtrs, peering with R1 via eigrp and then with R4/5/6 via bgp?
If so then you are missing redistribution between the eigrp and bgp processes on both of these rtrs and you have
summarization enabled on the eigrp process which would negate advertisement of your subnetted addressing correctly in this network
Lastly I see your bgp peering from R3 towards R5/6 but not peering from R2 is this correct of do you require mutual redistribution from R2/R3
Can you confirm the above topology?
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