> For the complete documentation index, see [llms.txt](https://adavyshin.gitbook.io/networks/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://adavyshin.gitbook.io/networks/vxlan-evpn-fabric/lab-2.-postroenie-underlay-seti.md).
# Lab 2. Построение Underlay-сети
1. Открываем новый проект в GNS3 и называем его `XYZ-vxlan-fabric`
где `X`-первая буква вашего имени, `Y`-первая буква вашей фамилии и `Z`-номер вашего стенда
2. Собираем архитектуру согласно схеме ниже из 8 коммутаторов (6 leaf-ов и 2 spine-a)
Схема коммутации следующая:
| Коммутатор 1 | Интерфейс 1 | Коммутатор 2 | Интерфейс 2 |
| ------------ | ----------- | ------------ | ----------- |
| dc1-spine1 | Ethernet1 | dc-leaf1 | Ethernet1 |
| dc1-spine1 | Ethernet2 | dc-leaf2 | Ethernet1 |
| dc1-spine1 | Ethernet3 | dc-leaf3 | Ethernet1 |
| dc1-spine1 | Ethernet4 | dc-leaf4 | Ethernet1 |
| dc1-spine1 | Ethernet5 | dc-leaf5 | Ethernet1 |
| dc1-spine1 | Ethernet6 | dc-leaf6 | Ethernet1 |
| dc1-spine2 | Ethernet1 | dc-leaf1 | Ethernet2 |
| dc1-spine2 | Ethernet2 | dc-leaf2 | Ethernet2 |
| dc1-spine2 | Ethernet3 | dc-leaf3 | Ethernet2 |
| dc1-spine2 | Ethernet4 | dc-leaf4 | Ethernet2 |
| dc1-spine2 | Ethernet5 | dc-leaf5 | Ethernet2 |
| dc1-spine2 | Ethernet6 | dc-leaf6 | Ethernet2 |
3. 🔧 Настраиваем на dc1-leaf1 базовую конфигурацию и адресацию
```
hostname dc1-leaf1
!
interface Ethernet1
description {Link to "dc1-spine1" port "Eth1"}
no switchport
ip address 10.255.1.101/31
!
interface Ethernet2
description {Link to "dc1-spine2" port "Eth1"}
no switchport
ip address 10.255.1.201/31
!
interface Loopback0
description {Router-ID}
ip address 10.254.0.1/32
```
4. 🔧 Настраиваем на dc1-leaf2 базовую конфигурацию и адресацию
```
hostname dc1-leaf2
!
interface Ethernet1
description {Link to "dc1-spine1" port "Eth2"}
no switchport
ip address 10.255.2.101/31
!
interface Ethernet2
description {Link to "dc1-spine2" port "Eth2"}
no switchport
ip address 10.255.2.201/31
!
interface Loopback0
description {Router-ID}
ip address 10.254.0.2/32
```
5. 🔧 Настраиваем на dc1-leaf3 базовую конфигурацию и адресацию
```
hostname dc1-leaf3
!
interface Ethernet1
description {Link to "dc1-spine1" port "Eth3"}
no switchport
ip address 10.255.3.101/31
!
interface Ethernet2
description {Link to "dc1-spine2" port "Eth3"}
no switchport
ip address 10.255.3.201/31
!
interface Loopback0
description {Router-ID}
ip address 10.254.0.3/32
```
6. 🔧 Настраиваем на dc1-leaf4 базовую конфигурацию и адресацию
```
hostname dc1-leaf4
!
interface Ethernet1
description {Link to "dc1-spine1" port "Eth4"}
no switchport
ip address 10.255.4.101/31
!
interface Ethernet2
description {Link to "dc1-spine2" port "Eth4"}
no switchport
ip address 10.255.4.201/31
!
interface Loopback0
description {Router-ID}
ip address 10.254.0.4/32
```
7. 🔧 Настраиваем на dc1-leaf5 базовую конфигурацию и адресацию
```
hostname dc1-leaf5
!
interface Ethernet1
description {Link to "dc1-spine1" port "Eth5"}
no switchport
ip address 10.255.5.101/31
!
interface Ethernet2
description {Link to "dc1-spine2" port "Eth5"}
no switchport
ip address 10.255.5.201/31
!
interface Loopback0
description {Router-ID}
ip address 10.254.0.5/32
```
8. 🔧 Настраиваем на dc1-leaf6 базовую конфигурацию и адресацию
```
hostname dc1-leaf6
!
interface Ethernet1
description {Link to "dc1-spine1" port "Eth6"}
no switchport
ip address 10.255.6.101/31
!
interface Ethernet2
description {Link to "dc1-spine2" port "Eth6"}
no switchport
ip address 10.255.6.201/31
!
interface Loopback0
description {Router-ID}
ip address 10.254.0.6/32
```
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