HUAWEI TECHNOLOGIES CO., LTD. VLAN Principles. Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 2 Foreword A Virtual Local Area.

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Transcription de la présentation:

HUAWEI TECHNOLOGIES CO., LTD. VLAN Principles

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 2 Foreword A Virtual Local Area Network (VLAN) represents a form of administrative network that defines a logical grouping of hosts or end system devices that are not limited to a physical location, and may be defined based on a wide range of parameters that allow for a greater flexibility in the way that logical groups are defined. The application of VLAN technology has expanded to support many aspects of enterprise networking as a means of logical data flow management and isolation.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 3 Objectives Upon completion of this section, trainees will be able to: Explain the application of VLAN tagging. Describe the different port link types and characteristics. Successfully establish port based VLANs.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. LAN Limitations Page 4 No broadcast domain to manage expanding local networks.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. VLAN Technology Page 5 A VLAN enables logical isolation of traffic at the data link layer. Group 1 Group 2

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. VLAN Frame Format Page 6 Untagged frame Tagged frame 0x8100PCPDEIVLAN ID （ 12b ） 2 bytes DMAC Data SMACType FCS 6 bytes 2 bytes bytes4 bytes DMAC Data SMACType FCS 6 bytes 2 bytes bytes4 bytes Tag TPIDTCI A VLAN tag is inserted to distinguish frames for each VLAN.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Link Types Page 7 Trunk Access VLAN3VLAN2 A trunk represents a backbone for the transmission of VLAN traffic between switches.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Port VLAN ID Page 8 PVID1 PVID2 PVID3 PVID1 PVID represents the default VLAN for each interface. The PVID is set to VLAN 1 for all ports by default.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Port Types – Access Page 9 Host AHost CHost B Untagged PVID10 PVID2 Frame10 Access ports remove VLAN tags before forwarding frames.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Port Types – Trunk Page 10 Frames carried over a trunk link may be tagged or untagged. All VLANs must be permitted before being carried over a trunk. Host AHost CHost BHost D Untagged Frame20 Untagged SWASWB Untagged PVID10 PVID20 PVID10 PVID20 PVID10

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 11 Port Types – Hybrid Hybrid ports are defined as either tagged or untagged. VLAN communication can be managed on a port by port basis. PVID10 Host AHost CHost BHost D Untagged PVID10 Frame20 Untagged SWASWB Untagged PVID10 PVID20 PVID10 PVID20 Hybrid Untagged Hybrid Tagged Untagged Frame10

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 12 VLAN Assignment Methods Assignment Method VLAN 5VLAN 10 Port basedG0/0/1, G0/0/7G0/0/2 G0/0/9 MAC based AA CC BB DD IP Subnet based * * Protocol based IPIPX Policy based * + G0/0/ AA * + G0/0/ BB G0/0/1 Host A Host D Host B Host C G0/0/2 G0/0/7 G0/0/9 SWA Five methods of VLAN assignment are possible. Port based VLAN assignment is the default assignment method.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 13 Creating VLANs [SWA]vlan 10 [SWA-vlan10]quit [SWA]vlan batch 2 to 3 Info: This operation may take a few seconds. Please wait for a moment...done. Host AHost DHost BHost C SWASWB

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Creating VLANs Page 14 [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan-stacking; #: ProtocolTransparent-vlan; *:Management- vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common 3 common 10 common …… [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan-stacking; #: ProtocolTransparent-vlan; *:Management- vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common 3 common 10 common ……

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 15 Setting the Port Link Type [SWA]interface GigabitEthernet 0/0/1 [SWA-GigabitEthernet0/0/1]port link-type trunk [SWA-GigabitEthernet0/0/1]quit [SWA]interface GigabitEthernet 0/0/5 [SWA-GigabitEthernet0/0/5]port link-type access SWASWB G0/0/1 G0/0/7G0/0/5 Host AHost DHost BHost C

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 16 Assigning Ports to VLANs [SWA]vlan 2 [SWA-vlan2]port GigabitEthernet 0/0/7 [SWA-vlan2]quit [SWA]interface GigabitEthernet 0/0/5 [SWA-GigabitEthernet0/0/5]port link-type access [SWA-GigabitEthernet0/0/5]port default vlan 3 SWASWB G0/0/1 G0/0/7G0/0/5 Host AHost DHost BHost C

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Verifying VLAN Assignment Page 17 [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan-stacking; #: ProtocolTransparent-vlan; *:Management- vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/7(D) 3 common UT:GE0/0/5(U) 10 common …… [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan-stacking; #: ProtocolTransparent-vlan; *:Management- vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/7(D) 3 common UT:GE0/0/5(U) 10 common ……

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 18 Forwarding Over the Trunk [SWA-GigabitEthernet0/0/1]port link-type trunk [SWA-GigabitEthernet0/0/1]port trunk pvid vlan 10 [SWA-GigabitEthernet0/0/1]port trunk allow-pass vlan 2 3 SWASWB G0/0/1 Host AHost DHost BHost C

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Forwarding Over the Trunk Page 19 [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan-stacking; #: ProtocolTransparent-vlan; *:Management- vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/7(D) TG:GE0/0/1(U) 3 common UT:GE0/0/5(U) TG:GE0/0/1(U) 10 common …… [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan-stacking; #: ProtocolTransparent-vlan; *:Management- vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/7(D) TG:GE0/0/1(U) 3 common UT:GE0/0/5(U) TG:GE0/0/1(U) 10 common ……

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Configuring Hybrid Ports Page 20 [SWA-GigabitEthernet0/0/5]port link-type hybrid [SWA-GigabitEthernet0/0/5]port hybrid pvid vlan 3 [SWA-GigabitEthernet0/0/5]port hybrid untagged vlan 3 [SWA-GigabitEthernet0/0/7]port link-type hybrid [SWA-GigabitEthernet0/0/7]port hybrid pvid vlan 2 [SWA-GigabitEthernet0/0/7]port hybrid untagged vlan 2 SWASWB G0/0/1 Host AHost DHost BHost C G0/0/7G0/0/5

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Configuring Hybrid Ports Page 21 SWASWB G0/0/1 Host AHost DHost BHost C G0/0/7G0/0/5 [SWA-GigabitEthernet0/0/1]port link-type hybrid [SWA-GigabitEthernet0/0/1]port hybrid tagged vlan 2 to 3 Trunk links using the hybrid port link-type must enable tagging of VLAN frames before forwarding.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Configuration Validation Page 22 [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan- stacking; #: ProtocolTransparent-vlan; *:Management-vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/7(D) TG:GE0/0/1(U) 3 common UT:GE0/0/5(U) TG:GE0/0/1(U) 10 common …… [SWA]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan- stacking; #: ProtocolTransparent-vlan; *:Management-vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/7(D) TG:GE0/0/1(U) 3 common UT:GE0/0/5(U) TG:GE0/0/1(U) 10 common ……

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Configuring Hybrid Ports Page 23 [SWB-GigabitEthernet0/0/4]port link-type hybrid [SWB-GigabitEthernet0/0/4]port hybrid pvid vlan 3 [SWB-GigabitEthernet0/0/4]port hybrid untagged vlan 2 to 3 SWASWB G0/0/1 Host AHost DHost BHost C G0/0/7G0/0/5G0/0/4 Hybrid ports can be configured to receive VLAN traffic from multiple VLANs by simply removing the tag at the port interface.

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Configuration Validation Page 24 [SWB]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan- stacking; #: ProtocolTransparent-vlan; *:Management-vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/4(U) 3 common UT:GE0/0/4(U) 4…… [SWB]display vlan The total number of vlans is : U:Up; D:Down; TG:Tagged; UT:Untagged; MP:Vlan-mapping; ST:Vlan- stacking; #: ProtocolTransparent-vlan; *:Management-vlan; VID Type Ports common UT:GE0/0/1(U) …… 2 common UT:GE0/0/4(U) 3 common UT:GE0/0/4(U) 4……

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 25 Voice VLAN Application Voice VLANs are used to distinguish, isolate and prioritize voice traffic over service traffic as a means of quality assurance. SWB Host A SWA VoIP IPTV G0/0/1 MAC: MAC:

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 26 Voice VLAN Configuration [SWB]vlan 2 [SWB-vlan2]interface GigabitEthernet 0/0/1 [SWB-GigabitEthernet0/0/1]voice-vlan 2 enable [SWB-GigabitEthernet0/0/1]voice-vlan mode auto [SWB-GigabitEthernet0/0/1]quit [SWB]voice-vlan mac-address mask ffff-ff SWB Host A SWA VoIP IPTV G0/0/1 MAC: MAC:

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Configuration Validation Page 27 [SWB]display voice-vlan status Voice VLAN Configurations: Voice VLAN ID : 2 Voice VLAN status : Enable Voice VLAN aging time : 1440(minutes) Voice VLAN 8021p remark : 6 Voice VLAN dscp remark : Port Information: Port Add-Mode Security-Mode Legacy GigabitEthernet0/0/1 Auto Security Disable [SWB]display voice-vlan status Voice VLAN Configurations: Voice VLAN ID : 2 Voice VLAN status : Enable Voice VLAN aging time : 1440(minutes) Voice VLAN 8021p remark : 6 Voice VLAN dscp remark : Port Information: Port Add-Mode Security-Mode Legacy GigabitEthernet0/0/1 Auto Security Disable

Copyright © 2016 Huawei Technologies Co., Ltd. All rights reserved. Page 28 Summary If a trunk link has a PVID of 5 and the command port trunk allow-pass vlan 2 3 is used, which VLAN traffic will be carried over the trunk? What action will be taken by an access port with a PVID of 2 when receiving an untagged frame?

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