Embedded Files
TOPOLOGY
Task
Task
EBGP
EBGP
IBGP
IBGP
Router 1
Create peer-grop with router 3 4 5 6 7 8 9 10 with the loop back address
RR Clients
Create neighbor config with router 1 loopback address
Update source loop back 0
Verification
Verification
Show IP BGP on R1
Resolve any Potential Issue
Solutio
Solutio
EBGP
EBGP
R4
router bgp 100
neighbor 204.12.1.254 remote-as 54
R6
router bgp 100
neighbor 54.1.1.254 remote-as 54
Router 2
router bgp 200
bgp log-neighbor-changes
aggregate-address 155.1.0.0 255.255.0.0
redistribute connected
neighbor 150.1.3.3 remote-as 100
neighbor 150.1.3.3 ebgp-multihop 2
neighbor 150.1.3.3 update-source Loopback0
neighbor 150.1.5.5 remote-as 100
neighbor 150.1.5.5 ebgp-multihop 2
neighbor 150.1.5.5 update-source Loopback0
neighbor 192.10.1.254 remote-as 254
neighbor 192.10.1.254 password CISCO
neighbor 192.10.1.254 update-source Ethernet0/0
Router 5 and 3
Router bgp 100
neighbor 150.1.2.2 remote-as 200
neighbor 150.1.2.2 ebgp-multihop 2
neighbor 150.1.2.2 update-source Loopback0
IBGP
IBGP
Router 1
config t
router bgp 100
neighbor CLIENTS peer-group
neighbor CLIENTS remote-as 100
neighbor CLIENTS router-reflector-client
neighbor 150.1.3.3 peer-group CLIENTS
neighbor 150.1.4.4 peer-group CLIENTS
neighbor 150.1.5.5 peer-group CLIENTS
neighbor 150.1.6.6 peer-group CLIENTS
neighbor 150.1.7.7 peer-group CLIENTS
neighbor 150.1.8.8 peer-group CLIENTS
neighbor 150.1.9.9 peer-group CLIENTS
neighbor 150.1.10.10 peer-group CLIENTS
Clients
config t
router bgp 100
neighbor 150.1.1.1 remote-as 100
neighbor 150.1.1.1 update-source Loopback0
Varification
R1
Show ip bgp
BGP table version is 74, local router ID is 150.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
* i 28.119.16.0/24 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 28.119.17.0/24 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 112.0.0.0 204.12.1.254 0 100 0 54 50 60 i
* i 54.1.1.254 0 100 0 54 50 60 i
* i 113.0.0.0 204.12.1.254 0 100 0 54 50 60 i
* i 54.1.1.254 0 100 0 54 50 60 i
* i 114.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 115.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 116.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
Network Next Hop Metric LocPrf Weight Path
* i 117.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 118.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 119.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 205.90.31.0 155.1.23.2 0 100 0 200 254 ?
*>i 155.1.0.2 0 100 0 200 254 ?
* i 220.20.3.0 155.1.23.2 0 100 0 200 254 ?
*>i 155.1.0.2 0 100 0 200 254 ?
* i 222.22.2.0 155.1.23.2 0 100 0 200 254 ?
*>i 155.1.0.2 0 100 0 200 254 ?
Potential Issue 1
Router 1 is not learning any best path from R6 routes and R4 routes.
None of the peer groups are learning any routes from R1 as RR only reflects the routs with best path to is clients.
Solution for Potential issue 1
Solution for Potential issue 1
Advertise external links on the edge routers R6 and R4 into EIGRP domian however do not run EIGRP on the interfaces.
R4
config t
router eigrp 100
network 204.12.1.0
passive-interface Ethernet0/0
R6
config t
router eigrp 100
network 54.0.0.0
passive-interface Serial1/0
R1
show ip bgp
BGP table version is 94, local router ID is 150.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, f RT-Filter,
x best-external, a additional-path, c RIB-compressed,
Origin codes: i - IGP, e - EGP, ? - incomplete
RPKI validation codes: V valid, I invalid, N Not found
Network Next Hop Metric LocPrf Weight Path
*>i 28.119.16.0/24 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
*>i 28.119.17.0/24 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
*>i 112.0.0.0 204.12.1.254 0 100 0 54 50 60 i
* i 54.1.1.254 0 100 0 54 50 60 i
*>i 113.0.0.0 204.12.1.254 0 100 0 54 50 60 i
* i 54.1.1.254 0 100 0 54 50 60 i
*>i 114.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
*>i 115.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
*>i 116.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
Network Next Hop Metric LocPrf Weight Path
*>i 117.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
*>i 118.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
*>i 119.0.0.0 204.12.1.254 0 100 0 54 i
* i 54.1.1.254 0 100 0 54 i
* i 205.90.31.0 155.1.23.2 0 100 0 200 254 ?
*>i 155.1.0.2 0 100 0 200 254 ?
* i 220.20.3.0 155.1.23.2 0 100 0 200 254 ?
*>i 155.1.0.2 0 100 0 200 254 ?
* i 222.22.2.0 155.1.23.2 0 100 0 200 254 ?
*>i 155.1.0.2 0 100 0 200 254 ?
Check clints
Check clints
SW1,SW2,SW3
Rack1SW1#sib
BGP table version is 94, local router ID is 150.1.7.7
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale, m multipath, b backup-path, x best-external
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*>i28.119.16.0/24 204.12.1.254 0 100 0 54 i
*>i28.119.17.0/24 204.12.1.254 0 100 0 54 i
*>i112.0.0.0 204.12.1.254 0 100 0 54 50 60 i
*>i113.0.0.0 204.12.1.254 0 100 0 54 50 60 i
*>i114.0.0.0 204.12.1.254 0 100 0 54 i
*>i115.0.0.0 204.12.1.254 0 100 0 54 i
*>i116.0.0.0 204.12.1.254 0 100 0 54 i
*>i117.0.0.0 204.12.1.254 0 100 0 54 i
*>i118.0.0.0 204.12.1.254 0 100 0 54 i
*>i119.0.0.0 204.12.1.254 0 100 0 54 i
*>i205.90.31.0 155.1.0.2 0 100 0 200 254 ?
*>i220.20.3.0 155.1.0.2 0 100 0 200 254 ?
*>i222.22.2.0 155.1.0.2 0 100 0 200 254 ?
PI 2
none of the internal routers are able to ping beyond edge routers
Solution
R6,R4
config t
router bgp 100
aggregate-address 155.1.0.0 255.255.0.0
redistribute connected
R2
config t
router bgp 200
aggregate-address 155.1.0.0 255.255.0.0
redistribute connected
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