有关客户侧的BGP路由器的配置参考：

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有关VLANID： VLANID是客户自定义的internalVLAN,不同的客户可以使用相同的VLANID，对于IXP来说，会有一个唯一的S-tag进行标记，不需要客户配置网络底层的S-tag。详见下文配置示例（仅供参考）：

Specify C-tags (VLAN ID)

Customerneed tospecify 2 C-tags to identify the P2P subinterface traffics. C-tag isgenerally aVLAN ID, you can specify it from 1 to4094. Any number is ok. Differentcustomers can use same C-tags, allowoverlap. C-tag is inner VLAN,when packetspassed to IXP, IXP will add an S-tagto the packets, as outer VLANID. S-taguniquely identified a customer’s trafficthrough IXP network.

Terminology

Circuit:     Alogical representation of connection between the customer and Azure

MSEEMicrosoftServiceEnterprise Edge

VNETVirtualNetwork

APPSAzurePublicPeering Services e.g. Storage, SQL,…

IXP    InternetExchange Point

VRF  Virtualrouting and forwarding

Servicekey    An ID(typically a GUID) used to uniquely identify acustomer circuit

BGP  BorderGateway Protocol

S-tag A VLANtagunique identify a customer’s traffic on a physical port

C-tag1      Uniquelyidentify public peering traffic

C-tag2      Uniquelyidentify private peering traffic

2.       有关路由器的配置参考：https://azure.microsoft.com/en-us/documentation/articles/expre***oute-config-samples-routing/

该链接提供Cisco IOS-XE和JuniperMX系列路由器的接口和路由配置示例。这些示例仅供参考，请不要完全按其配置。请联系您路由器方的技术支持为您的网络设备提供适合的配置。

请注意：本邮件下文及文档中的配置示例仅用于参考，您需要联系您的路由器技术支持团队和您的网络团队，来进行满足您需求的配置。本邮件及链接文档中涉及的路由器配置条目，Windows Azure不提供技术支持。请联系您的设备厂商获取类似问题的技术支持。

1.       P2Pinterface configuration

StandardTemplate(cisco):

interfaceEthernet. //createsub-interface,sub number use C-tag

description //configure interface description

ipaddress  //configure interface IP,use thefirst IP

encapsulationdot1Q   //configure dot1q encapsulation, addc-tag.

2.       BGPconfiguration

StandardTemplate(cisco device):

routerbgp //configure BGP

bgp router-id  //configureBGP router-id, use loopback IP

bgplog-neighbor-changes  //configurelog neighbor changes

neighbor  //configurebgp neighbor

 remote-as12076                         //specifyneighbor’sas number

 descriptionPrimary_line_public_peer //describe neighbor

 ebgp-multihop2                           //configureebgpmultihop

 address-familyipv4unicast

neighbor

  remote-as 12076

 descriptionPrimary_line_private_peer

 ebgp-multihop 2

 address-family ipv4 unicast

address-family ipv4 unicast

 networkmask  //announcesubnetsthat need to talk to Azure

A customer setup acircuit:

IP subnets andVLAN IDs:

Router     IPPrefix     PeeringVLANID(C-tag)

Primary    192.168.1.0/30 Public  500

Secondary     192.168.2.0/30 Public  500

Primary    192.168.1.4/30 Private 510

Secondary     192.168.2.4/30 Private 510

IPaddressassignment:

    Customerrouter     MicrosoftMSEE

Primary    192.168.1.1      192.168.1.2

Secondary     192.168.2.1      192.168.2.2

Primary    192.168.1.5      192.168.1.6

Secondary     192.168.2.5      192.168.2.6

AS number:65001

P2P interface configuration:

interface Ethernet1/1

descriptionCT_B17547793_10M_primary_link

 no switchport

 speed 1000

 no negotiate auto

interface Ethernet1/1.500

 descriptionCT_primary_public_peer

 encapsulation dot1q 500

 ip address 192.168.1.1/30

interface Ethernet1/1.510

 descriptionCT_primary_private_peer

 encapsulation dot1q 510

 ip address 192.168.1.5/30

interface Ethernet1/2

DescriptionCT_B17547794_10M_secondary_link

 no switchport

 speed 1000

 no negotiate auto

interface Ethernet1/2.500

 descriptioncustomer1_secondary_public_peer

 encapsulation dot1q 500

 ip address 192.168.2.1/30

interface Ethernet1/2.510

 descriptioncustomer1_secondary_private_peer

 encapsulation dot1q 510

 ip address 192.168.2.5/30

BGP configuration:

router bgp 65001

 router-id 192.168.3.1

 bgp log-neighbor-changes

 address-family ipv4 unicast

   network192.168.4.0/24

 neighbor 192.168.1.2

remote-as 12076

   descriptionCT_primary_public_peer

   ebgp-multihop 2

   address-familyipv4unicast

 neighbor 192.168.1.6

   remote-as 12076

   descriptionCT_primary_private_peer

   ebgp-multihop 2

   address-familyipv4unicast

 neighbor 192.168.2.2

   remote-as 12076

   descriptionCT_secondary_public_peer

   address-familyipv4unicast

 neighbor 192.168.2.6

   remote-as 12076

   descriptionCT_secondary_private_peer

   address-familyipv4unicast

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