BGP Aggregator dan Automic Aggregate
Topologi serta Settingan konfigurasi ip Address, EIGRP dan BGP masih sama dengan lab sebelumnya
namun konfigurasi access list dan route-map sebelumnya di hapus dulu
konfigurasi hanya di Router 4
Bikin Access-list dulu
R4(config)#access-list 1 permit host 40.1.1.1
R4(config)#access-list 1 permit host 40.2.1.1
R4(config)#access-list 1 permit host 40.3.1.1
R4(config)#access-list 1 deny any
Bikin route-map dan masukin number access listnya
R4(config)#route-map lock
R4(config-route-map)#match ip address 1
Konfigurasi BGP Aggregatornya dan masukin route mapnya
R4(config-route-map)#router bgp 200
R4(config-router)#aggregate-address 40.0.0.0 255.248.0.0 suppress-map lock
di lab ini menggunakan suppress-map untuk multi summary
setelah di konfigurasi langsung di cek di router tetangganya yaitu Router 2
R2#sh ip bgp
BGP table version is 124, local router ID is 22.22.22.22
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 11.11.11.11/32 1.1.1.1 0 100 0 i
*> 22.22.22.22/32 0.0.0.0 0 32768 i
*>i 33.33.33.33/32 3.3.3.3 0 100 0 i
*> 40.0.0.0/13 42.42.42.2 0 0 200 i
*> 40.4.1.1/32 42.42.42.2 0 0 200 i
*> 40.5.1.1/32 42.42.42.2 0 0 200 i
*> 44.44.44.44/32 42.42.42.2 0 0 200 i
R2#
Mantab mas broo, ip loopback 40.4.1.1 - 40.3.1.1 tidak terlihat di BGP Table
R2, hal ini menandakan proses beberapa summary telah berhasil, selanjutnya
single summary
Single Summary
hapus dulu konfigurasi bgp agregator supres-map lock nya di R4
sebelum di konfigurasi single summary ip loopback 40.1.1.1 - 40.5.1.1 terlihat
semua di BGP table R2
R2#sh ip bgp
BGP table version is 13, local router ID is 22.22.22.22
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 11.11.11.11/32 1.1.1.1 0 100 0 i
*> 22.22.22.22/32 0.0.0.0 0 32768 i
*>i 33.33.33.33/32 3.3.3.3 0 100 0 i
*> 40.1.1.1/32 42.42.42.2 0 0 200 i
*> 40.2.1.1/32 42.42.42.2 0 0 200 i
*> 40.3.1.1/32 42.42.42.2 0 0 200 i
*> 40.4.1.1/32 42.42.42.2 0 0 200 i
*> 40.5.1.1/32 42.42.42.2 0 0 200 i
*> 44.44.44.44/32 42.42.42.2 0 0 200 i
R2#
Sekarang kita summary 5 IP loopback di R4 yaitu 40.1.1.1 - 40.5.1.1 menjdi
subnet 40.0.0.0/13 sehingga yang muncul cukup subnet 40.0.0.0/13
konfigrasi di R4
R4(config)#router bgp 200
R4(config-router)#aggregate-address 40.0.0.0 255.248.0.0 summary-only
clear dulu bgp tablenya
clear ip bgp *
kemudian verifikasi di R2
R2#sh ip bgp
BGP table version is 23, local router ID is 22.22.22.22
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 11.11.11.11/32 1.1.1.1 0 100 0 i
*> 22.22.22.22/32 0.0.0.0 0 32768 i
*>i 33.33.33.33/32 3.3.3.3 0 100 0 i
*> 40.0.0.0/13 42.42.42.2 0 0 200 i
*> 44.44.44.44/32 42.42.42.2 0 0 200 i
R2#
Mantab mas broo, terlihat di BGP table R2 ip loopback 40.1.1.1 - 40.5.1.1
di rangkum atau di summary menjadi 40.0.0.0/13
selesei
Salam Ngoprek