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Typical Configuration Examples

SD-WAN V100R018C00

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Configuring OSPF and BGP Routes

Configuring OSPF and BGP Routes

Related Products

Agile Controller-Campus: V300R003C00

AR: V300R003C00

Networking Requirements

Figure 1-11 illustrates the SD-WAN networking of Enterprise A. On this network, the WAN-side enterprise networks are a Layer 2 MPLS network and the Internet. The IP address of the MPLS network gateway is 172.16.1.254/24, and BGP is supported in the WAN-side Internet. During the setup of an SD-WAN network, the tenant administrator has created the hub sites and branch sites. Routes need to be configured for the underlay networks.

Figure 1-11 Enterprise networking

Solution Design

  1. The MPLS network on the WAN side is a Layer 2 network. On the underlay network, OSPF routes can be configured to connect the CPEs to the MPLS network.
  2. BGP is supported in the Internet, allowing BGP routes to be configured on the underlay network for connecting the CPEs to the MPLS network. To improve the security of the BGP routing protocol, MD5 authentication is enabled.
  3. OSPF process information needs to be configured on the CPEs of each site to enable interconnection between the site and the MPLS network through OSPF routes. The CPE in the active hub site acts as the designated router (DR) in the OSPF area whereas the CPE in the standby hub site acts as the backup designated router (BDR) in the OSPF area. No routing policy needs to be configured because currently there is no need to restrict the network segments in which OSPF routes are advertised and received. This means all OSPF routes are advertised and received in every network segment.
  4. The information about BGP peers needs to be configured on the CPE of each site to enable interconnection between the site and the MPLS network. The Internet link at Site3 obtains a dynamic IP address through PPPoE, and the IP address of the BGP peer is 10.100.5.2, as provided by the network provider. No routing policy needs to be configured because currently there is no need to restrict the network segments in which BGP routes are advertised and received. This means all BGP routes are advertised and received in every network segment.

Data Plan

Table 1-51 OSPF route information

Item

Value

Site

Hub1

Hub2

Site2

Site3

Device

Hub1_1

Hub2_1

Site2_1

Site2_1

Site3_1

Process ID

501

501

501

502

501

WAN link

MPLS1

MPLS1

MPLS1

MPLS2

MPLS1

Common Parameter

Default route advertisement

ON

ON

OFF

OFF

OFF

Default route cost

10

11

-

-

-

Internal preference

10

10

10

10

10

ASE preference

150

150

150

150

150

Interface Parameter

Area ID

0

0

0

0

0

Interface Name

GE3/0/0

GE3/0/0

GE0/0/0

GE0/0/4

GE0/0/0

Authentication Mode

None

None

None

None

None

Hello Timer

10

10

10

10

10

DR Priority

255

254

0

0

0

Cost

-

-

-

-

-

Route Redistribute

-

-

-

-

-

-

Router Filter

Export filter

OFF

OFF

OFF

OFF

OFF

Import filter

OFF

OFF

OFF

OFF

OFF

Table 1-52 BGP route information

Item

Value

Site

Hub1

Hub2

Site3

Site4

Advanced Settings

Default route redistribution

ON

ON

OFF

OFF

OFF

Device

Hub1_2

Hub2_2

Site3_2

Site4_1

Site4_2

Peer IP

10.100.1.2

10.100.2.2

10.100.5.2

10.100.3.2

10.100.4.2

Peer AS

100

100

100

100

100

Local AS

101

102

103

104

105

Keepalive time (s)

60

60

60

60

60

Hold time (s)

180

180

180

180

180

MD5 encrypt

admin123

admin123

admin123

admin123

admin123

WAN link

Internet1

Internet1

Internet1

Internet1

Internet2

Routing Policy

Export

OFF

OFF

OFF

OFF

OFF

Import

OFF

OFF

OFF

OFF

OFF

Procedure

  1. Log in to the Agile Controller-Campus as a tenant administrator.
  2. Finish creating sites.
  3. Configure routes for the underlay network of the hub sites.

    1. Choose Configuration > Site > Underlay Configuration.
    2. Select Hub1 from the left list and click WAN Route.
    3. On the WAN Route page that is displayed, click Click Here to Add Routing Protocol and select OSPF.
    4. On the OSPF page, click Create and set OSPF route parameters. On the main page, click Apply Changes.

    5. On the WAN Route page that is displayed, click and select BGP.
    6. On the BGP page, click Advanced Settings and enable Default route redistribution.

    7. On the BGP page, click Create and set BGP route parameters. On the main page, click Apply Changes.

    8. Perform the same operations to complete OSPF route configurations for Hub2, click Apply Changes.

    9. Perform the same operations to complete BGP configurations for Hub2, click Apply Changes.

  4. Configure routes for the underlay networks of the branch sites.

    1. In the list on the left, select Site2, and configure OSPF routes. On the main page, click Apply Changes.

    2. In the list on the left, select Site3, and configure OSPF routes. On the main page, click Apply Changes.

    3. In the list on the left, select Site3, and configure BGP routes. On the main page, click Apply Changes.

    4. In the list on the left, select Site4, and configure BGP routes. On the main page, click Apply Changes.

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Updated: 2019-03-04

Document ID: EDOC1100036696

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