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Проверим корректность ранее созданного Route-map:
| Блок кода | ||
|---|---|---|
| ||
ESR1# sh ip route-map AS
Order: 1
Description: --
Matching pattern:
Access group --
AS path regex "(64500)"
Community --
Extcommunity --
BGP local-preference: --
BGP metric (MED): --
BGP weight: --
Address (object-group): --
Next hop (object-group): --
Route source (object-group): --
RIP metric --
RIP tag --
OSPF metric type --
OSPF metric --
OSPF tag --
Actions:
Decision: Deny
Route next hop: --
Route IPv6 next hop: --
IP address: --
IPv6 address: --
AS path (prepand): --
Community: --
Extcommunity: --
Local preference: --
BGP next hop address: --
BGP IPv6 next hop address: --
BGP metric (MED): --
BGP weight: --
Origin: --
RIP metric --
RIP tag --
OSPF metric type --
OSPF metric --
OSPF tag --
--------------------------------------------------------------------------------
Order: 2
Description: --
Matching pattern:
Access group --
AS path --
Community --
Extcommunity --
BGP local-preference: --
BGP metric (MED): --
BGP weight: --
Address (object-group): --
Next hop (object-group): --
Route source (object-group): --
RIP metric --
RIP tag --
OSPF metric type --
OSPF metric --
OSPF tag --
Actions:
Decision: Permit
Route next hop: --
Route IPv6 next hop: --
IP address: --
IPv6 address: --
AS path (prepand): --
Community: --
Extcommunity: --
Local preference: --
BGP next hop address: --
BGP IPv6 next hop address: --
BGP metric (MED): --
BGP weight: --
Origin: --
RIP metric --
RIP tag --
OSPF metric type --
OSPF metric --
OSPF tag --
--------------------------------------------------------------------------------
ESR1#
|
В контексте настройки пира применим созданный Route-map для фильтрации входящих маршрутов:
| Блок кода | ||
|---|---|---|
| ||
ESR1(config)# router bgp 64498
ESR1(config-bgp)# neighbor 198.51.100.2
ESR1(config-bgp-neighbor)# address-family ipv4 unicast
ESR1(config-bgp-neighbor-af)# route-map AS in
ESR1(config-bgp-neighbor-af)# do com
ESR1(config-bgp-neighbor-af)# do conf |
Проверим, что BGP RIB не содержить маршрут, содержащий AS-path 64500:
| Блок кода | ||
|---|---|---|
| ||
ESR1# sh bgp ipv4 unicast
Status codes: u - unicast, b - broadcast, m - multicast, a - anycast
* - valid, > - best
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> u 192.0.2.1/32 198.51.100.2 -- 100 0 64497 i |
Настройка завершена.
Настройка Policy-Based Routing
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