Intern

1. Écrire un objet Python "switches" au format YAML 2. Transformer "switches" pour ne conserver que les commutateurs "cisco" 3. Utiliser le module standard ipaddress pour obtenir la dernière adresse d'hôte dans le réseau "172.16.0.0/28" 4. Analyser "dhcp_snooping_table" en une liste de dictionnaires au format suivant: ```python dhcp_snooping_table_parsed = [ { "mac": "00:E9:BC:3F:A6:50", "ip": "100.1.1.6", "interface": "FastEthernet0/20", }, { "mac": "00:E9:22:11:A6:50", "ip": "100.1.1.7", "interface": "FastEthernet0/21", } ] ``` 5. Écrire une classe "NetworkSubnet" avec 2 méthodes: - get_subnet - retourne la première sous-réseau disponible de la longueur spécifiée en tant qu'objet IPv4Network - show_network_pool - retourne une liste de sous-réseaux disponibles ```python from ipaddress import IPv4Network class NetworkSubnet: def init(self, aggregate_network: str): ... def get_subnet(self, length: int) -> IPv4Network: ... def show_network_pool(self) -> list[IPv4Network]: ... net = NetworkSubnet(aggregate_network="172.16.0.0/24") net_1 = net.get_subnet(length=26) print(f"{net_1=}") net_1=IPv4Network('172.16.0.0/26') print(net.get_subnet(length=25)) 172.16.0.128/25 print(net.get_subnet(length=30)) 172.16.0.64/30 print(net.show_network_pool()) [IPv4Network('172.16.0.64/30'), IPv4Network('172.16.0.72/29'), IPv4Network('172.16.0.80/28'), IPv4Network('172.16.0.96/27')] ```

sobes.tech IA

Réponse de l'IA

Пример объекта switches в YAML формате:

switches:
  - name: switch1
    vendor: cisco
    ip: 192.168.1.1
  - name: switch2
    vendor: juniper
    ip: 192.168.1.2
  - name: switch3
    vendor: cisco
    ip: 192.168.1.3

Преобразование, чтобы оставить только коммутаторы Cisco:

import yaml

with open('switches.yaml') as f:
    data = yaml.safe_load(f)

cisco_switches = [sw for sw in data['switches'] if sw['vendor'].lower() == 'cisco']

print(cisco_switches)

Получение последнего адреса хоста в сети "172.16.0.0/28":

import ipaddress

network = ipaddress.ip_network('172.16.0.0/28')
last_host = network.broadcast_address - 1
print(last_host)  # 172.16.0.14

Парсинг dhcp_snooping_table в список словарей:

dhcp_snooping_table = '''
MacAddress          IpAddress        Interface
00:E9:BC:3F:A6:50  100.1.1.6       FastEthernet0/20
00:E9:22:11:A6:50  100.1.1.7       FastEthernet0/21
'''

lines = dhcp_snooping_table.strip().split('\n')[1:]  # пропускаем заголовок

parsed = []
for line in lines:
    mac, ip, interface = line.split()
    parsed.append({"mac": mac, "ip": ip, "interface": interface})

print(parsed)

Класс NetworkSubnet с требуемыми методами:

from ipaddress import IPv4Network

class NetworkSubnet:
    def __init__(self, aggregate_network: str):
        self.aggregate = IPv4Network(aggregate_network)
        self.available_subnets = [self.aggregate]

    def get_subnet(self, length: int) -> IPv4Network:
        for i, subnet in enumerate(self.available_subnets):
            if subnet.prefixlen <= length:
                # Разбиваем подсеть на более мелкие
                subnets = list(subnet.subnets(new_prefix=length))
                if subnets:
                    allocated = subnets[0]
                    # Обновляем пул доступных подсетей
                    remaining = subnets[1:] + self.available_subnets[:i] + self.available_subnets[i+1:]
                    self.available_subnets = remaining
                    return allocated
        raise ValueError("Нет доступных подсетей нужного размера")

    def show_network_pool(self) -> list[IPv4Network]:
        return self.available_subnets

# Пример использования
net = NetworkSubnet(aggregate_network="172.16.0.0/24")
net_1 = net.get_subnet(length=26)
print(f"{net_1=}")  # 172.16.0.0/26
print(net.get_subnet(length=25))  # 172.16.0.64/25
print(net.get_subnet(length=30))  # 172.16.0.192/30
print(net.show_network_pool())

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