Step 1 |
enable
Example:
|
Enables privileged EXEC mode.
- Enter your password if prompted.
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Step 2 |
configure terminal
Example:
Device# configure terminal
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Enters global configuration mode.
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Step 3 |
router bgp
as-number
Example:
Device(config)# router bgp 10
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Enters router configuration mode, and creates a BGP routing process.
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Step 4 |
no synchronization
Example:
Device(config-router)# no synchronization
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Configures BGP to send advertisements without waiting to synchronize with the IGP.
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Step 5 |
neighbor
ip-address
remote-as
as-number
Example:
Device(config-router)# neighbor 10.0.0.1 remote-as 10
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Establishes peering with the specified neighbor or peer group.
- In this step, you are establishing an iBGP session with the PE device that is connected to the CE device at the other CE site.
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Step 6 |
neighbor
ip-address
update-source loopback
interface-number
Example:
Device(config-router)# neighbor 10.0.0.1 update-source loopback 0
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Configures BGP to use any operational interface for TCP connections.
- This configuration step is not required. However, the BGP routing process will be less susceptible to the effects of interface or link flapping.
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Step 7 |
address-family vpnv4
Example:
Device(config-router)# address-family vpnv4
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Enters address family configuration mode for configuring routing sessions that use standard IPv4 address prefixes, such as BGP, RIP, and static routing sessions.
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Step 8 |
neighbor
ip-address
activate
Example:
Device(config-router-af)# neighbor 10.0.0.1 activate
|
Establishes peering with the specified neighbor or peer group.
- In this step, you are activating the exchange of VPNv4 routing information between the PE devices.
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Step 9 |
neighbor
ip-address
send-community extended
Example:
Device(config-router-af)# neighbor 10.0.0.1 send-community extended
|
Configures the local device to send extended community attribute information to the specified neighbor.
- This step is required for the exchange of EIGRP extended community attributes.
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Step 10 |
exit-address-family
Example:
Device(config-router-af)# exit-address-family
|
Exits address family configuration mode and enters router configuration mode.
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Step 11 |
address-family ipv4 vrf
vrf-name
Example:
Device(config-router)# address-family ipv4 vrf RED
|
Configures an IPv4 address family for the EIGRP VRF and enters address family configuration mode.
- An address-family VRF needs to be configured for each EIGRP VRF that runs between the PE and CE devices.
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Step 12 |
redistribute eigrp
as-number [metric
metric-value] [route-map
map-name]
Example:
Device(config-router-af)# redistribute eigrp 101
|
Redistributes the EIGRP VRF into BGP.
- The autonomous system number from the CE network is configured in this step.
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Step 13 |
no synchronization
Example:
Device(config-router-af)# no synchronization
|
Configures BGP to send advertisements without waiting to synchronize with the IGP.
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Step 14 |
exit-address-family
Example:
Device(config-router-af)# exit-address-family
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Exits address family configuration mode and enters router configuration mode.
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Step 15 |
end
Example:
Device(config-router)# end
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Exits router configuration mode and enters privileged EXEC mode.
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