CCIE学习笔记之RSVP
Router(config-if)# ip rsvp bandwidth [ interface-kbps] [ single-flow-kbps ]
! EnablesRSVP for IP on an interface
Router(config)# ip rsvp sendersession-ip-address
sender-ip-address [tcp | udp | ip-protocol ] session-dport
sender-sport previous-hop-ip-addressprevious-hop-interface
bandwidth burst-size
!Enters the senders in the RSVP database
!The related ip rsvp sender-host command enables a router to simulate a hostgenerating RSVP PATH messages
Router(config)# ip rsvp reservationsession-ip-address
sender-ip-address [tcp | udp | ip-protocol ] session-dport
sender-sport next-hop-ip-addressnext-hop-interface { ff | se |
wf} { rate | load} bandwidth burst-size
! Entersthe receivers in the RSVP database
! Therelated ip rsvp reservation-host commandenables a router to simulate a host generating RSVP RESV messages
Router(config)#ip rsvp udp-multicasts [multicast-address]
! Specifiesmulticast destinations that should receive UDP-encapsulated messages
Router(config)#ip rsvp neighbor access-list-number
! Limitswhich routers may offer reservations.
Router(config-if)#ip rsvp flow-assist
! EnablesRSVP to attach itself to NetFlow
Router(config-if)#ip rsvp precedence { conform
precedence-value | exceed precedence-value }
! Sets theIP Precedence conform and exceed values
!前提：ip rsvp flow-assist
Router(config-if)#ip rsvp tos {conform tos-value |
exceedtos-value}
! Sets theToS conform and exceed values
!前提：ip rsvp flow-assist
Toensure QoS for the RSVP reservatio n, WFQ is configured on the interfacesenabled for
thereservation
thefirst router downstream from the senderin the router network would receive the RSVP PATH message from the sender；the next hop upstreamfrom the host running the receiver application would receive an RSVP RESV message from the receiver。
例子：
C1为数据源，C2为接收端
R1：ip rsvpsender 225.1.1.1 12.1.2.1 UDP 7001 7000 12.1.2.1 s1/0 20 1
! This command causes the router toact as if it were receiving PATH messages destined to multicast address225.1.1.1 from a source 12.1.2.1. The previous hop of the PATH message is12.1.2.1, and the message was received on s1/0
R3: ip rsvp reservation 225.1.1.112.1.2.1 UDP 7001 7000 9.1.2.1 Et2/0 FF LOAD 8 1
! This command causes the router toact as if it were receiving RESV messages for the session with multicastdestination 225.1.1.1. The messages request a Fixed Filter reservation tosource 12.1.2.1, and act as if they had arrived from a receiver on E2/0 withaddress 9.1.2.1
Ateach hop, the router receiving the RSVPRESV message must determine whether it
canhonor the reservation request
RSVP路径信息从C1到C2；RSVP RESV消息从C2到C1，每一跳路由器判断是否可以预留.如果要QOS，那么数据的下连链路要开启WFQ
R1：
interfaces1/0
ip address 12.1.1.1 255.0.0.0
no ip directed-broadcast
ip pim dense-mode
ip rsvp bandwidth 1 1
interfacef2/0
ip address 11.1.1.2 255.0.0.0
no ip directed-broadcast
ip pim dense-mode
ip rsvp bandwidth 10 10
fair-queue 64 256 1000
media-type 10BaseT
routerospf 100
network 11.0.0.0 0.255.255.255 area 10
network 12.0.0.0 0.255.255.255 area 10
iprsvp sender 225.1.1.1 12.1.2.1 UDP 7001 7000 12.1.2.1 s1/0 20 1
R2:
interfacef1/0
ip address 11.1.1.1 255.0.0.0
no ip directed-broadcast
ip pim dense-mode
ip rsvp bandwidth 1 1
media-type 10BaseT
!
interfaces2/0
ip address 10.1.1.2 255.0.0.0
no ip directed-broadcast
ip pim dense-mode
ip rsvp bandwidth 20 20
fair-queue 64 256 1000
routerospf 100
network 10.0.0.0 0.255.255.255 area 10
network 11.0.0.0 0.255.255.255 area 10
R3:
interfaceEthernet2/0
ip address 9.1.1.2 255.0.0.0
no ip directed-broadcast
ip pim dense-mode
ip rsvp bandwidth 20 20
fair-queue 64 256 1000
media-type 10BaseT
interfaces1/0
ip address 10.1.1.1 255.0.0.0
no ip directed-broadcast
ip pim dense-mode
ip rsvp bandwidth 1 1
hssi internal-clock
iprsvp reservation 225.1.1.1 12.1.2.1 UDP 7001 7000 9.1.2.1 Et2/0 FF LOAD 8 1
Router#(config)# ip rsvp pq-profile
Router(config)# ip rsvp pq-profile 11000 1500ignore-peak-value
! Specifies the criteria for determiningwhich flows
go into the priority queue.
Router(config)# interface s2/0
Router(config-if)# ip rsvp bandwidth
Router(config-if)# ip rsvp bandwidth 300 30
! Enables RSVP on an interface
Router(config-if)# fair-queue
! Enables WFQ on an interface with priority
queueing (PQ) support
Router(config-if)# ip rsvp burst policing
! Specifies a burst factor on aper-interface basis
Router(config)# ip rsvp sender
! Specifies the RSVP path parameters,including the
destination and source addresses, theprotocol, the
destination and source ports, the previoushop
address, the average bit rate, and theburst size
Router(config)# ip rsvp reservation
! Specifies the RSVP reservationparameters,
including the destination and sourceaddresses, the
protocol, the destination and source ports,the next
hop address, the input interface, theservice type,
the average bit rate, and the burst size
Router# show ip rsvp installed
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