Intern

1. Écrire l'objet Python "switches" au format YAML 2. Transformer "switches" pour ne conserver que les commutateurs "cisco" 3. En utilisant le module standard ipaddress, obtenir la dernière adresse de l'hôte dans le réseau "172.16.0.0/28" 4. Analyser "dhcp_snooping_table" en une liste de dictionnaires de la manière suivante: 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" qui possède 2 méthodes : - get_subnet - retourne la première sous-réseau disponible de la longueur spécifiée sous forme d'un 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

python import yaml from ipaddress import ip_network, IPv4Network

1. Записать Python объект "switches" в YAML

switches = [ {"vendor": "cisco", "model": "2960"}, {"vendor": "juniper", "model": "ex2200"}, {"vendor": "cisco", "model": "3750"}, ]

with open("switches.yaml", "w") as f: yaml.dump(switches, f)

2. Оставить только cisco коммутаторы

cisco_switches = [sw for sw in switches if sw["vendor"] == "cisco"]

3. Получить последний адрес хоста в сети 172.16.0.0/28

network = ip_network("172.16.0.0/28") last_host = list(network.hosts())[-1]

4. Парсинг dhcp_snooping_table

dhcp_snooping_table = """ 00:E9:BC:3F:A6:50 100.1.1.6 FastEthernet0/20 00:E9:22:11:A6:50 100.1.1.7 FastEthernet0/21 """

dhcp_snooping_table_parsed = [] for line in dhcp_snooping_table.strip().splitlines(): mac, ip, interface = line.split() dhcp_snooping_table_parsed.append({"mac": mac, "ip": ip, "interface": interface})

5. Класс NetworkSubnet

class NetworkSubnet: def init(self, aggregate_network: str): self.aggregate = ip_network(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))
            # Берём первую подсеть
            chosen = subnets[0]
            # Обновляем пул доступных подсетей
            self.available_subnets.pop(i)
            self.available_subnets.extend(subnets[1:])
            self.available_subnets.sort(key=lambda x: int(x.network_address))
            return chosen
    raise ValueError("Нет доступных подсетей нужной длины")

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()) # Оставшиеся подсети

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