1.2 配置思路
通过配置VRRP、BFD特性保证组播数据在出口网关、核心设备传输的可靠性,配置组
播协议实现组播数据在出口网关、核心设备正常转发:
1. S7700-1与S7700-2 之间,S7700-3与S7700-4之间配置链路聚合,保证VRRP协议报文交互的通畅与可靠, 能够正常运行。
2. 各设备上创建VLAN,接口加入VLAN,对应VLANIF接口配IP地址,使本地达网络可达。
3. 各设备上配置OSPF路由协议,达到网络层互通。出口网关与核心层间实现单播转
发的负载均衡,减轻单链路同时转发单播数据和组播数据的压力。
4. S7700-1与S7700-2 之间,S7700-3与S7700-4之间配VRRP备份组,实现设备间冗余备份,确保组播数据可靠转发。不同备份组间实现单播转发的负载均衡,减轻单设备同时转发单播数据和组播数据的压力。
5. 各设备上配置组播协议,实现组播数据正常转发。
6. 各设备上配置BFD for OSPF、BDF for PIM ,确保设备能快速感知链路故障,单播
路由、组播路由快速收敛。
1.2 配置步骤
步骤 1 配置链路聚合。
# 在所有设备上创建 接口并加入成员接口。
<S7700-1>system-view
[S7700-1]interface Eth-Trunk 1
[S7700-1-Eth-Trunk1]trunkport GigabitEthernet 2/0/1 to 2/0/3
[S7700-1-Eth-Trunk1]quit
<S7700-2>system-view
[S7700-2]interface Eth-Trunk 1
[S7700-2-Eth-Trunk1]trunkport GigabitEthernet 2/0/1 to 2/0/3
[S7700-2-Eth-Trunk1]quit
<S7700-3>system-view
[S7700-3]interface Eth-Trunk 1
[S7700-3-Eth-Trunk1]trunkport GigabitEthernet 2/0/1 to 2/0/3
[S7700-3-Eth-Trunk1]quit
<S7700-4>system-view
[S7700-4]interface Eth-Trunk 1
[S7700-4-Eth-Trunk1]trunkport GigabitEthernet 2/0/1 to 2/0/3
[S7700-4-Eth-Trunk1]quit
缺省情况下, 的工作模式为手工负载分担模式,所有活动接口都参与数据
的转发,分担负载流量。
步骤 2 创建VLAN,配置接口加入VLAN,三层接口配IP地址。
a. 在所有设备上创建VLAN,配置接口加入VLAN。S7700-2、S7700-3、S7700-4上的配置与S7700-1上的配置相似,配置过程略。
说明
S7700的二层接口默认使能STP。如果当前二层网络为环形组网,STP会将其中的一个端口阻塞以防止环路。在本配置示例中,S7700-3、S7700-4和下游二层交换机已经构成了二层环网。为了不影响后面OSPF路由负载分担功能,建议S7700-3、S7700-4去使能与下游二层交换机相连的二层接口上的STP功能。同时可在下游的二层交换机上配置Smart Link负载分担功能,确保二层环网不会广播风暴的同时,还能实现链路的负载分担。
[S7700-1] vlan batch 100 200 301 302
[S7700-1] interface gigabitethernet 1/0/0
[S7700-1-GigabitEthernet1/0/0] port link-type trunk
[S7700-1-GigabitEthernet1/0/0] port trunk allow-pass vlan 100
[S7700-1-GigabitEthernet1/0/0] quit
[S7700-1] interface gigabitethernet 3/0/1
[S7700-1-GigabitEthernet3/0/1] port link-type trunk
[S7700-1-GigabitEthernet3/0/1] port trunk allow-pass vlan 301
[S7700-1-GigabitEthernet3/0/1] quit
[S7700-1] interface gigabitethernet 3/0/2
[S7700-1-GigabitEthernet3/0/2] port link-type trunk
[S7700-1-GigabitEthernet3/0/2] port trunk allow-pass vlan 302
[S7700-1-GigabitEthernet3/0/2] quit
[S7700-1] interface eth-trunk 1
[S7700-1-Eth-Trunk1] port link-type trunk
[S7700-1-Eth-Trunk1] port trunk allow-pass vlan 200
[S7700-1-Eth-Trunk1] quit
b. 在所有设备上的三层接口上配置IP地址。S7700-2、S7700-3、S7700-4上的配置
与S7700-1上的配置相似,配置过程略。
[S7700-1] interface vlanif 100
[S7700-1-Vlanif100] ip address 10.1.1.1 24
[S7700-1-Vlanif100] quit
[S7700-1] interface vlanif 301
[S7700-1-Vlanif301] ip address 10.1.2.1 24
[S7700-1-Vlanif301] quit
[S7700-1] interface vlanif 302
[S7700-1-Vlanif302] ip address 10.1.3.1 24
[S7700-1-Vlanif302] quit
[S7700-1] interface loopback 1
[S7700-1-LoopBack1] ip address 1.1.1.1 32
[S7700-1-LoopBack1] quit
步骤 3 配置OSPF路由协议
# 在所有设备上使能OSPF,设备加入Area 0,配置Area 0内需要发布的网段。
S7700-2、S7700-3、S7700-4上的配置与S7700-1上的配置相似,配置过程略。
[S7700-1] ospf
[S7700-1-ospf-1] area 0
[S7700-1-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255
[S7700-1-ospf-1-area-0.0.0.0] network 10.1.2.0 0.0.0.255
[S7700-1-ospf-1-area-0.0.0.0] network 10.1.3.0 0.0.0.255
[S7700-1-ospf-1-area-0.0.0.0] network 1.1.1.1 0.0.0.0
[S7700-1-ospf-1-area-0.0.0.0] quit
[S7700-1-ospf-1] quit。
步骤 4 配置VRRP备份组。
a. 在S7700-1和S7700-2上创建VRRP备份组1,配置S7700-1的优先级为120,抢占延时为20秒,作为Master设备;S7700-2的优先级为缺省值,作为Backup设备。
# 配置S7700-1
[S7700-1] interface vlanif 100
[S7700-1-Vlanif100] vrrp vrid 1 virtual-ip 10.1.1.253
[S7700-1-Vlanif100] vrrp vrid 1 priority 120
[S7700-1-Vlanif100] vrrp vrid 1 preempt-mode timer delay 20
[S7700-1-Vlanif100] quit
# 配置S7700-2
[S7700-2] interface vlanif 100
[S7700-2-Vlanif100] vrrp vrid 1 virtual-ip 10.1.1.253
[S7700-2-Vlanif100] quit
b. 在S7700-1和S7700-2上创建VRRP备份组2,配置S7700-2的优先级为120,抢占延时为20秒,作为Master设备;S7700-1的优先级为缺省值,作为Backup设备。
# 配置S7700-1
[S7700-1] interface vlanif 100
[S7700-1-Vlanif100] vrrp vrid 2 virtual-ip 10.1.1.254
[S7700-1-Vlanif100] quit
# 配置S7700-2
[S7700-2] interface vlanif 100
[S7700-2-Vlanif100] vrrp vrid 2 virtual-ip 10.1.1.254
[S7700-2-Vlanif100] vrrp vrid 2 priority 120
[S7700-2-Vlanif100] vrrp vrid 2 preempt-mode timer delay 20
[S7700-2-Vlanif100] quit
S7700-3和S7700-4的配置步骤与S7700-1和S7700-2的配置步骤类似,配置过程略。
步骤 5 配置组播协议。
a. 在所有设备上使能组播路由功能,三层接口上使能PIM-SM,在用户侧接口上使能IGMP。
# 配置S7700-1
[S7700-1] multicast routing-enable
[S7700-1] interface vlanif 100
[S7700-1-Vlanif100] pim sm
[S7700-1-Vlanif100] quit
[S7700-1] interface vlanif 301
[S7700-1-Vlanif301] pim sm
[S7700-1-Vlanif301] quit
[S7700-1] interface vlanif 302
[S7700-1-Vlanif302] pim sm
[S7700-1-Vlanif302] quit
[S7700-1] interface loopback 1
[S7700-1-LoopBack1] pim sm
[S7700-1-LoopBack1] quit
# 配置S7700-2
[S7700-2] multicast routing-enable
[S7700-2] interface vlanif 100
[S7700-2-Vlanif100] pim sm
[S7700-2-Vlanif100] quit
[S7700-2] interface vlanif 304
[S7700-2-Vlanif304] pim sm
[S7700-2-Vlanif304] quit
[S7700-2] interface vlanif 305
[S7700-2-Vlanif305] pim sm
[S7700-2-Vlanif305] quit
[S7700-2] interface loopback 1
[S7700-2-LoopBack1] pim sm
[S7700-2-LoopBack1] quit
# 配置S7700-3
[S7700-3] multicast routing-enable
[S7700-3] interface vlanif 400
[S7700-3-Vlanif100] pim sm
[S7700-3-Vlanif100] igmp enable
[S7700-3-Vlanif100] quit
[S7700-3] interface vlanif 301
[S7700-3-Vlanif304] pim sm
[S7700-3-Vlanif304] quit
[S7700-3] interface vlanif 302
[S7700-3-Vlanif305] pim sm
[S7700-3-Vlanif305] quit
[S7700-3] interface loopback 1
[S7700-3-LoopBack1] pim sm
[S7700-3-LoopBack1] quit
# 配置S7700-4
[S7700-4] multicast routing-enable
[S7700-4] interface vlanif 400
[S7700-4-Vlanif100] pim sm
[S7700-4-Vlanif100] igmp enable
[S7700-4-Vlanif100] quit
[S7700-4] interface vlanif 303
[S7700-4-Vlanif304] pim sm
[S7700-4-Vlanif304] quit
[S7700-4] interface vlanif 304
[S7700-4-Vlanif305] pim sm
[S7700-4-Vlanif305] quit
[S7700-4] interface loopback 1
[S7700-4-LoopBack1] pim sm
[S7700-4-LoopBack1] quit
b. 配置动态RP。
# 配置S7700-3的Loopback1接口为C-BSR、C-RP接口。
[S7700-3] pim
[S7700-3-pim] c-bsr interface loopback 1
[S7700-3-pim] c-rp interface loopback 1
[S7700-3-pim] quit
# 配置S7700-4的Loopback1接口为C-BSR、C-RP接口。
[S7700-3] pim
[S7700-4-pim] c-bsr interface loopback 1
[S7700-4-pim] c-rp interface loopback 1
[S7700-4-pim] quit
步骤 6 配置BFD功能。
a. 在所有设备上使能全局BFD功能。全局BFD功能是配置BFD for OSPF、BFD for PIM的前提。S7700-2、S7700-3、S7700-4上的配置与S7700-1上的配置相似,配置过程略。
[S7700-1] bfd
[S7700-1-bfd] quit
b. 在所有设备上配置BFD for OSPF功能。S7700-2、S7700-3、S7700-4上的配置与S7700-1上的配置相似,配置过程略。
[S7700-1] ospf
[S7700-1-ospf-1] bfd all-interfaces enable
[S7700-1-ospf-1] quit
[S7700-1] interface vlanif 100
[S7700-1-Vlanif100] ospf bfd enable
[S7700-1-Vlanif100] quit
[S7700-1] interface vlanif 301
[S7700-1-Vlanif301] ospf bfd enable
[S7700-1-Vlanif301] quit
[S7700-1] interface vlanif 302
[S7700-1-Vlanif302] ospf bfd enable
[S7700-1-Vlanif302] quit
c. 在所有设备上配置BFD for PIM功能。S7700-2、S7700-3、S7700-4上的配置与S7700-1上的配置相似,配置过程略。
[S7700-1] interface vlanif 100
[S7700-1-Vlanif100] pim bfd enable
[S7700-1-Vlanif100] quit
[S7700-1] interface vlanif 301
[S7700-1-Vlanif301] pim bfd enable
[S7700-1-Vlanif301] quit
[S7700-1] interface vlanif 302
[S7700-1-Vlanif302] pim bfd enable
[S7700-1-Vlanif302] quit
配置文件
7700-1的配置文件
sysname S7700-1
#
vlan batch 100 200 301 302
#
multicast routing-enable
#
bfd
#
interface Vlanif100
ip address 10.1.1.1 255.255.255.0
vrrp vrid 1 virtual-ip 10.1.1.253
vrrp vrid 1 priority 120
vrrp vrid 1 preempt-mode timer delay 20
vrrp vrid 2 virtual-ip 10.1.1.254
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif301
ip address 10.1.2.1 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif302
ip address 10.1.3.1 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Eth-Trunk1
port link-type trunk
port trunk allow-pass vlan 200
#
interface GigabitEthernet1/0/0
port link-type trunk
port trunk allow-pass vlan 100
#
interface GigabitEthernet2/0/1
eth-trunk 1
#
interface GigabitEthernet2/0/2
eth-trunk 1
#
interface GigabitEthernet2/0/3
eth-trunk 1
#
interface GigabitEthernet3/0/1
port link-type trunk
port trunk allow-pass vlan 301
#
interface GigabitEthernet3/0/2
port link-type trunk
port trunk allow-pass vlan 302
#
interface LoopBack1
ip address 1.1.1.1 255.255.255.255
pim sm
#
ospf 1
bfd all-interfaces enable
area 0.0.0.0
network 1.1.1.1 0.0.0.0
network 10.1.1.0 0.0.0.255
network 10.1.2.0 0.0.0.255
network 10.1.3.0 0.0.0.255
#
return
S7700-2的配置文件
sysname S7700-2
#
vlan batch 100 200 303 304
#
multicast routing-enable
#
bfd
#
interface Vlanif100
ip address 10.1.1.2 255.255.255.0
vrrp vrid 1 virtual-ip 10.1.1.253
vrrp vrid 2 virtual-ip 10.1.1.254
vrrp vrid 2 priority 120
vrrp vrid 2 preempt-mode timer delay 20
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif303
ip address 10.1.4.1 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif302
ip address 10.1.5.1 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Eth-Trunk1
port link-type trunk
port trunk allow-pass vlan 200
#
interface GigabitEthernet1/0/0
port link-type trunk
port trunk allow-pass vlan 100
#
interface GigabitEthernet2/0/1
eth-trunk 1
#
interface GigabitEthernet2/0/2
eth-trunk 1
#
interface GigabitEthernet2/0/3
eth-trunk 1
#
interface GigabitEthernet3/0/1
port link-type trunk
port trunk allow-pass vlan 303
#
interface GigabitEthernet3/0/2
port link-type trunk
port trunk allow-pass vlan 304
#
interface LoopBack1
ip address 2.2.2.2 255.255.255.255
pim sm
#
ospf 1
bfd all-interfaces enable
area 0.0.0.0
network 2.2.2.2 0.0.0.0
network 10.1.1.0 0.0.0.255
network 10.1.4.0 0.0.0.255
network 10.1.5.0 0.0.0.255
#
return
S7700-3的配置文件
sysname S7700-3
#
vlan batch 301 303 400 500
#
multicast routing-enable
#
bfd
#
interface Vlanif301
ip address 10.1.2.2 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif303
ip address 10.1.5.1 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif400
ip address 10.1.6.1 255.255.255.0
vrrp vrid 1 virtual-ip 10.1.6.253
vrrp vrid 1 priority 120
vrrp vrid 1 preempt-mode timer delay 20
vrrp vrid 2 virtual-ip 10.1.6.254
pim sm
pim bfd enable
igmp enable
ospf bfd enable
#
interface Eth-Trunk1
port link-type trunk
port trunk allow-pass vlan 500
#
interface GigabitEthernet1/0/0
port link-type trunk
port trunk allow-pass vlan 400
stp disable
#
interface GigabitEthernet2/0/1
eth-trunk 1
#
interface GigabitEthernet2/0/2
eth-trunk 1
#
interface GigabitEthernet2/0/3
eth-trunk 1
#
interface GigabitEthernet3/0/1
port link-type trunk
port trunk allow-pass vlan 301
#
interface GigabitEthernet3/0/2
port link-type trunk
port trunk allow-pass vlan 303
#
interface LoopBack1
ip address 3.3.3.3 255.255.255.255
pim sm
#
ospf 1
bfd all-interfaces enable
area 0.0.0.0
network 3.3.3.3 0.0.0.0
network 10.1.2.0 0.0.0.255
network 10.1.4.0 0.0.0.255
network 10.1.6.0 0.0.0.255
#
pim
c-bsr LoopBack1
c-rp LoopBack1
#
return
S7700-4的配置文件
sysname S7700-4
#
vlan batch 302 304 400 500
#
multicast routing-enable
#
bfd
#
interface Vlanif302
ip address 10.1.3.2 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif304
ip address 10.1.5.2 255.255.255.0
pim sm
pim bfd enable
ospf bfd enable
#
interface Vlanif400
ip address 10.1.6.2 255.255.255.0
vrrp vrid 1 virtual-ip 10.1.6.253
vrrp vrid 2 virtual-ip 10.1.6.254
vrrp vrid 2 priority 120
vrrp vrid 2 preempt-mode timer delay 20
pim sm
pim bfd enable
igmp enable
ospf bfd enable
#
interface Eth-Trunk1
port link-type trunk
port trunk allow-pass vlan 500
#
interface GigabitEthernet1/0/0
port link-type trunk
port trunk allow-pass vlan 400
stp disable
#
interface GigabitEthernet2/0/1
eth-trunk 1
#
interface GigabitEthernet2/0/2
eth-trunk 1
#
interface GigabitEthernet2/0/3
eth-trunk 1
#
interface GigabitEthernet3/0/1
port link-type trunk
port trunk allow-pass vlan 304
#
interface GigabitEthernet3/0/2
port link-type trunk
port trunk allow-pass vlan 302
#
interface LoopBack1
ip address 4.4.4.4 255.255.255.255
pim sm
#
ospf 1
bfd all-interfaces enable
area 0.0.0.0
network 3.3.3.3 0.0.0.0
network 10.1.3.0 0.0.0.255
network 10.1.5.0 0.0.0.255
network 10.1.6.0 0.0.0.255
#
pim
c-bsr LoopBack1
c-rp LoopBack1
#
return
技术支持
