全部博文（102）
分类： 系统运维
2010-09-21 11:07:53
VRRP+STP network configuration case
In our current network environment , we can use the STP+VRRP classic network map to optimize . we can sort 2 modes for the STP. is single-instance model and multi-instance model.
Ø Single-instance :
configure easy, maintain easy , but the traffic cannot loading balance .
Ø Multi-instance :
configure complex, maintain complex , but the traffic can loading balance .
1 Single-instance
STP can block the redundancy port to stop the loop, for the single-instance STP, there is only one instance 0,so there is a single tree, the loop interface cannot forward all the traffic, the loading balance cannot reachable.
1.1 Single-instance STP map
PC-A ---NBR200----S3550A---------S2150G----PCB
| |
--------- S3550B------------
The IP address plan:
|
Devices |
IP address |
Remark |
|
PCA |
192.168.100.2 |
|
|
NBR200 |
192.168.0.1/24 |
|
|
192.168.1.1/24 |
| |
|
S3550A |
192.168.0.2/24 |
Fa0/1 |
|
192.168.3.2/24 |
Fa0/3 | |
|
192.168.2.0/24 |
Fa0/2 | |
|
S3550B |
192.168.1.2/24 |
Fa0/1 |
|
192.168.3.3/24 |
Fa0/3 | |
|
192.168.2.0/24 |
Fa0/2 | |
|
S2150G |
192.168.3.1/24 |
Fa0/1 |
|
192.168.3.2/24 |
Fa0/2 | |
|
PCB |
192.168.3.100/24 |
|
1.2 Devices configuration
1.2.1 NBR200
ip route 192.168.3.0 255.255.255.0 192.168.0.2 50
ip route 192.168.3.0 255.255.255.0 192.168.1.2 100
1.2.2 S3550A
Vlan1
Vlan 2
Vlan 3
Vlan 4
Spanning-tree
Spanning-tress mst 0 priority 4096
interface fa0/1
switchport access vlan 2
spanning-tree portfast
interface fa0/2
switchport trunk encapsulation dot1q
switchport mdoe trunk
switchport trunk allowed vlan remove 1-2,5-4094
interface fa0/3
switchport access vlan 4
interface vlan 2
ip address 192.168.0.2 255.255.255.0
interface vlan 3
ip address 192.168.2.1 255.255.255.0
interface vlan 4
ip address 192.168.3.2 255.255.255.0
standby 4 ip 192.168.3.1
standby 4 priority 150
ip route 0.0.0.0 vlan2 192.168.0.1 50
ip route 0.0.0.0 vlan3 192.168.2.2 100
1.2.3 S3350B
Vlan 1
Vlan 2
Vlan 3
Vlan 4
spanning-tree
interface fa0/1
switchport mode access
switchport access vlan 2
spanning-tree portfast
interface fa0/2
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan remove 1-2.5-4094
interface fa0/3
switchport mode access
switchport access vlan 4
interface vlan 2
ip address 192.168.1.2 255.255.255.0
interface vlan 3
ip address 192.168.2.2 255.255.255.0
interface vlan 4
ip address 192.168.3.3 255.255.255.0
standby 4 ip 192.168.3.1
ip route 0.0.0.0 0.0.0.0 vlan2 192.168.1.1 50
ip route 0.0.0.0 0.0.0.0 vlan3 192.168.2.1 100
1.2.4 S2150G
Spanning-tree
interface fa0/16
spanning-tree portfast
1.3 Notes:
S3550A is the master and the tree of the root.
1.4 Network testing
1 PCB àping PCA, cut the S3350A—NBR line, the network can convergence fast .the traffic will road->PCBàS2150GàS3350AàNBRàPCA.
2 PCBàping PCA, recovery the S3550A-NBR line, the network can convergence fast , the traffic will roadàPCBàS2150GàS3350AàNBRàPCA.
3 PCBàPing PCA, cut the S3550A—S2150G line, the network can convergence fast , the traffic will road àPCBàS2150GàS3550BàS3350AàPCA.
4 PCBàping PCA, recovery S3350A-S2150G line , the network can convergence fast , the traffic will road àPCBàS2150G-S3550A-NBR-PCA .
5 PCBàPing PCA, shutdown the 3550A power, the network can convergence fast , the traffic will roadàPCBàS2150GàS3550BàNBRàPCA.
2 multi-instance STP model
multi-instance àMSTP, we can use different instance for different vlan , and can loading traffic balancing in the large network .
2.1 multi-intance STP map
PC-A ---NBR200----S3550A---------S2150G----PCB
| |--------PCC
--------- S3550B------------
2.2 Devices configuration
2.2.1 NBR200
ip route 192.168.3.0 255.255.255.0 192.168.0.2 50
ip route 192.168.3.0 255.255.255.0 192.168.1.2 100
2.2.2 S3550A
Vlan 1
Vlan 2
Vlan 3
Vlan 4
Vlan 5
spanning-tress
spanning-tree mst configuration
instance 1 vlan 4
instance 2 vlan 5
instacnce 3 vlan 3
spanning-tree mst 1 priority 4096
interface fa0/1
switchport mode access
switchport access vlan 2
spanning-tree portfast
interface fa0/2
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan remove 1-2,6-4096
interface fa0/3
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan remove 1-3,6-4094
interface vlan 2
ip address 192.168.0.2 255.255.255.0
interface vlan 3
ip address 192.168.2.1 255.255.255.0
interface vlan 4
ip address 192.168.3.2 255.255.255.0
standby 4 ip 192.168.3.1
standby 4 priority 150
interface vlan 5
ip address 192.168.4.3 255.255.255.0
standby 5 ip 192.168.4.1
ip route 0.0.0.0 0.0.0.0 vlan 2 192.68.0.1 50
ip route 0.0.0.0 0.0.0.0 vlan 3 192.68.2.2 100
2.2.3 S3550B
Vlan 1
Vlan 2
Vlan 3
Vlan 4
Vlan 5
spanning-tress
spanning-tree mst configuration
instance 1 vlan 4
instance 2 vlan 5
instacnce 3 vlan 3
spanning-tree mst 2 priority 4096
interface fa0/1
switchport mode access
switchport access vlan 2
spanning-tree portfast
interface fa0/2
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan remove 1-2,6-4096
interface fa0/3
switchport trunk encapsulation dot1q
switchport mode trunk
switchport trunk allowed vlan remove 1-3,6-4094
interface vlan 2
ip address 192.168.1.2 255.255.255.0
interface vlan 3
ip address 192.168.2.2 255.255.255.0
interface vlan 4
ip address 192.168.3.3 255.255.255.0
standby 4 ip 192.168.3.1
interface vlan 5
ip address 192.168.4.2 255.255.255.0
standby 5 ip 192.168.4.1
standby 5 priority 150
ip route 0.0.0.0 0.0.0.0 vlan 2 192.68.1.1 50
ip route 0.0.0.0 0.0.0.0 vlan 3 192.68.2.1 100
2.2.5 S2150G
Vlan 1
Vlan 4
Vlan 5
spanning-tree
spanning-tree mst configuration
instance 1 vlan 4
instance 2 vlan 5
interface fa0/1
switcport mode trunk
switchport trunk allowed vlan remove 1-3,6-4096
interface fa0/2
switchport mode trunk
switchport trunk allowed vlan remove 1-3,6-4096
interface fa0/16
switchport access vlan 4
interface fa0/17
switchport access vlan 5
2.2 notes:
S3550A is the interface vlan 4 master and the tree instance 1 of the root.
S3350B is the interface vlan 5 master and the tree instance 2 of the root.
2.3 Network testing
The testing same as the 1.2.5
chinaunix网友2010-09-21 16:05:59
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