QoS Policy Propagation via BGP(QPPB)的应用
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 R1属于AS10，R2属于AS20，R3属于AS30
R1的L0(1.1.1.1/24)，发布到BGP中 在R2上使用QPPB来给BGP中学到的路由设置QOS属性，使得从R3发到1.1.1.0/24网段的流量被CAR限速 R1
conf t int l 0 ip ad 1.1.1.1 255.255.255.0 int f 0/0 ip ad 10.1.1.1 255.255.255.0 no shut router rip ver 2 no au net 10.0.0.0 router bgp 10 no au no sy nei 10.1.1.2 remote-as 20 net 1.1.1.0 mask 255.255.255.0 end R2
conf t int f 0/0 ip ad 10.1.1.2 255.255.255.0 no shut int s 2/0 ip ad 10.1.2.2 255.255.255.0 clock rate 64000 no shut router rip ver 2 net 10.0.0.0 router bgp 20 no au no sy nei 10.1.1.1 remote-as 10 nei 10.1.2.3 remote-as 30 exit access-list 1 permit 1.1.1.0 route-map QPPB permit 10 match ip ad 1 set ip qos-group 2 exit router bgp 20 table-map QPPB int s2/0 bgp-policy destination ip-qos-map rate-limit input qos-group 2 5000000 4000 8000 conform-action transmit exceed-action drop end R3
conf t int s2/0 ip ad 10.1.2.3 255.255.255.0 no shut router rip ver 2 no au net 10.0.0.0 router bgp 30 no au no sy nei 10.1.2.2 remote-as 20 end 校验
R2#sh int s2/0 rate-limit
Serial2/0 Input matches: qos-group 2 params: 5000000 bps, 4000 limit, 8000 extended limit conformed 0 packets, 0 bytes; action: transmit exceeded 0 packets, 0 bytes; action: drop last packet: 2379508ms ago, current burst: 0 bytes last cleared 00:00:24 ago, conformed 0 bps, exceeded 0 bps R2#sh ip int s 2/0
Serial2/0 is up, line protocol is up 。。。。。。。。。。。。。。 BGP Policy Mapping is enabled (output ip-qos-map) QPPB的配置步骤参考
1，基于community list的配置
conf t
route-map <name> [ permit | deny [seq]]
match community-list <num>
set ip precedence [<num> | <name>]
router bgp <as>
table-map <route-map-name>
exit
ip community-list <num> { permit | deny} <community number>
int <id>
bgp-policy {soutce | destination} ip-prec-map
2，基于AS path的配置
conf t
route-map <name> [permit | deny [seq] ]
match as-path <path-list-number>
set ip precedence <num>
router bgp <as>
table-map <route-map-name>
exit
ip as-path access-list <num> {permit | deny} <as-regular-expression>
int <id>
bgp-policy {source | destination} ip-prec-map
3，基于ACL的配置
conf t
route-map <name> [ permit | deny [<seq>] ]
match ip address <acl>
set ip precedence <num>
router bgp <as>
table-map <route-map-name>
exit
access-list <num> {permit | deny} <source-ip>
int <id>
bgp-policy {source | destination} ip-prec-map 本文出自 “穿过地狱去看海” 博客，谢绝转载！ 本文出自 51CTO.COM技术博客 |
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