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HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
HUAWEI SWITCH S5700 HOW TO
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
General infos and application environment 
Network designer...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
Configuring the STP mode for the ring network 
<Huawei> sys...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
Configuring root bridges and blocking ports 
2. Configure p...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
Enabling STP to eliminate loops (1) 
4. Disable STP on inte...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
Enabling STP to eliminate loops (2) 
6. Enable BPDU on all ...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
Enabling STP to eliminate loops (3) 
[SwitchC] interface gi...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
Checking the configuration 
7. Check the stp configuration ...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
More needs? 
See hints on www.ipmax.it 
Or email us your qu...
HUAWEI SWITCH S5700 - HOW TO 
Configuring basic STP functions 
IPMAX is a Huawei Partner in Italy. 
IPMAX is the ideal par...
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Huawei Switch How To - Configuring basic STP functions

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The topic of the day is "Configuring basic STP functions", we will use a simple network scenario to show how basic STP functions work. Follow us!

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Huawei Switch How To - Configuring basic STP functions

  1. 1. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions HUAWEI SWITCH S5700 HOW TO
  2. 2. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions General infos and application environment Network designers tend to deploy multiple physical links between two devices (one link is the master and the others are backups) to fulfill network redundancy requirements. Loops are bound to occur on such types of complex networks. Loops will cause broadcast storms, which exhaust network resources and paralyze the network. Loops also cause MAC address flapping that damages MAC address entries. STP can be deployed on a network to eliminate loops by blocking some ports. We will use a simple network scenario (see the picture) to show how basic STP functions work. In our example, after SwitchA, SwitchB, SwitchC, and SwitchD running STP discover loops by exchanging information, they trim the ring topology into a loop-free tree topology by blocking a certain port. STP prevents replication and circular propagation of packets on the network and the release the switching devices from processing duplicate packets, improving their processing performance. SwitchA Root Bridge GE 0/0/1 SwitchB SwitchC SwitchD PC1 10.1.1.2/24 PC2 10.1.1.3/24 GE 0/0/1 GE 0/0/2 GE 0/0/2 GE 0/0/3 GE 0/0/3 GE 0/0/1 GE 0/0/1 STP Blocked port GE 0/0/2 GE 0/0/2
  3. 3. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions Configuring the STP mode for the ring network <Huawei> system-view [Huawei] sysname SwitchA [SwitchA] stp mode stp 1. Configure the STP mode for all the switches Enter the configuration view Configure the switch name Configure the STP mode <Huawei> system-view [Huawei] sysname SwitchB [SwitchB] stp mode stp <Huawei> system-view [Huawei] sysname SwitchC [SwitchC] stp mode stp <Huawei> system-view [Huawei] sysname SwitchD [SwitchD] stp mode stp
  4. 4. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions Configuring root bridges and blocking ports 2. Configure primary (SwitchA) and secondary (SwitchD) root bridges Configure the primary root bridge Configure the secondary root bridge Enter the interface view Configure the interface path cost [SwitchA] stp root primary [SwitchD] stp root secondary 3. Configure the ports to be blocked (GE0/0/1 of SwitchC) [SwitchC] interface gigabitethernet 0/0/1 [SwitchC-GigabitEthernet0/0/1] stp cost 200000 [SwitchC-GigabitEthernet0/0/1] quit Exit the interface view
  5. 5. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions Enabling STP to eliminate loops (1) 4. Disable STP on interfaces connected to PC Enter the interface view Disable STP on the interface Enable STP on the switch Exit the interface view [SwitchB] interface gigabitethernet 0/0/2 [SwitchB-GigabitEthernet0/0/1] stp disable [SwitchB-GigabitEthernet0/0/1] quit [SwitchC] interface gigabitethernet 0/0/2 [SwitchC-GigabitEthernet0/0/2] stp disable [SwitchC-GigabitEthernet0/0/2] quit 5. Enable STP globally on all the switches [SwitchA] stp enable [SwitchB] stp enable [SwitchC] stp enable [SwitchD] stp enable
  6. 6. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions Enabling STP to eliminate loops (2) 6. Enable BPDU on all the interfaces except the interfaces connected to terminals [SwitchA] interface gigabitethernet 0/0/1 [SwitchA-GigabitEthernet0/0/1] bpdu enable [SwitchA-GigabitEthernet0/0/1] quit [SwitchA] interface gigabitethernet 0/0/2 [SwitchA-GigabitEthernet0/0/2] bpdu enable [SwitchA-GigabitEthernet0/0/2] quit Enter the interface view Enable the BPDU Exit the interface view [SwitchB] interface gigabitethernet 0/0/1 [SwitchB-GigabitEthernet0/0/1] bpdu enable [SwitchB-GigabitEthernet0/0/1] quit [SwitchB] interface gigabitethernet 0/0/3 [SwitchB-GigabitEthernet0/0/3] bpdu enable [SwitchB-GigabitEthernet0/0/3] quit
  7. 7. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions Enabling STP to eliminate loops (3) [SwitchC] interface gigabitethernet 0/0/1 [SwitchC-GigabitEthernet0/0/1] bpdu enable [SwitchC-GigabitEthernet0/0/1] quit [SwitchC] interface gigabitethernet 0/0/3 [SwitchC-GigabitEthernet0/0/3] bpdu enable [SwitchC-GigabitEthernet0/0/3] quit Enter the interface view Enable the BPDU Exit the interface view [SwitchD] interface gigabitethernet 0/0/1 [SwitchD-GigabitEthernet0/0/1] bpdu enable [SwitchD-GigabitEthernet0/0/1] quit [SwitchD] interface gigabitethernet 0/0/2 [SwitchD-GigabitEthernet0/0/2] bpdu enable [SwitchD-GigabitEthernet0/0/2] quit
  8. 8. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions Checking the configuration 7. Check the stp configuration on all the switches [SwitchA] display stp brief MSTID Port Role STP State Protection 0 GigabitEthernet0/0/1 DESI FORWARDING NONE 0 GigabitEthernet0/0/2 DESI FORWARDING NONE [Huawei] [SwitchB] display stp brief MSTID Port Role STP State Protection 0 GigabitEthernet0/0/1 DESI FORWARDING NONE 0 GigabitEthernet0/0/3 ROOT FORWARDING NONE [SwitchB] [SwitchC] display stp brief MSTID Port Role STP State Protection 0 GigabitEthernet0/0/1 ALTE DISCARDING NONE 0 GigabitEthernet0/0/3 ROOT FORWARDING NONE [SwitchC] [SwitchD] display stp brief MSTID Port Role STP State Protection 0 GigabitEthernet0/0/1 ROOT FORWARDING NONE 0 GigabitEthernet0/0/2 DESI FORWARDING NONE [SwitchD]
  9. 9. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions More needs? See hints on www.ipmax.it Or email us your questions to info_ipmax@ipmax.it
  10. 10. HUAWEI SWITCH S5700 - HOW TO Configuring basic STP functions IPMAX is a Huawei Partner in Italy. IPMAX is the ideal partner for companies seeking quality in products and services. IPMAX guarantees method and professionalism to support its customers in selecting technologies with the best quality / price ratio, in the design, installation, commissioning and operation. IPMAX srl Via Ponchielli, 4 20063 Cernusco sul Naviglio (MI) – Italy +39 02 9290 9171

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