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ESR(config)# router bgp 64516 ESR(config-bgp)# neighbor 192.0.2.6 ESR(config-bgp-neighbor)# address-family ipv4 unicast ESR(config-bgp-neighbor-af)# advertise-map ADVERTISE not exist-map CONDITION ESR(config-bgp-neighbor-af)# do commit ESR(config-bgp-neighbor-af)# do confirm |
Проверим работоспособность функционалакорректность настройки:
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//Проверяем наличие маршрута 10.1.1.1/32 в BGP RIB
ESR# sh bgp ipv4 unicast 10.1.1.1/32
10.1.1.1/32 via 192.0.2.1 on gi1/0/1 [bgp64516 07:07:59] (64515?)
Administrative Distance: 170
Type: unicast
Origin: Incomplete
AS path: 64515
Next Hop: 192.0.2.1
Output Label: --
Input Label: --
Local Preference: 100
MED: --
Cluster List: --
Community: --
EXT Community: --
Weight: 0
Valid, Best
// Проверяем статус сonditional advertisement и отсутствие анонса 198.51.100.0/24 провайдеру ISP "One"
ESR# sh bgp ipv4 unicast neighbor 192.0.2.6 advertise-routes
ESR# sh bgp neighbors 192.0.2.6
BGP neighbor is 192.0.2.6
BGP state: Established
Type: Static neighbor
Neighbor address: 192.0.2.6
Neighbor AS: 64517
Neighbor ID: 192.0.2.6
Neighbor caps: refresh enhanced-refresh restart-aware AS4
Session: external AS4
Source address: 192.0.2.5
Weight: 0
Hold timer: 99/180
Keepalive timer: 4/60
RR client: No
Address family ipv4 unicast:
Send-label: No
Default originate: No
Default information originate: No
Outgoing route-map: OUT
Advertise-map: ADVERTISE
Condition-map: CONDITION
Conditional advertisement status: Withdrawal
Preference: 170
Remove private AS: No
Next-hop self: No
Next-hop unchanged: No
Uptime: 1300 s |
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