Intern

1. Kirjutage Python objekti "switches" YAML-formaadis 2. Muutke "switches", et järele jääks ainult "cisco" lülitid 3. Käskluses standardise_macaddr saage viimase hosti aadress võrgus "172.16.0.0/28" 4. Analüüsige "dhcp_snooping_table" nimekirjana sõnastikke järgmisel kujul: ```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. Kirjutage klass "NetworkSubnet", millel on 2 meetodit: - get_subnet - tagastab esimese saadaval oleva alamsüsteemi soovitud pikkusega kui IPv4Network klassi objekt - show_network_pool - tagastab saadaval olevate alamsüsteemide nimekirja

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yaml switches: cisco1: vendor: cisco model: 2960 ip: 10.0.0.1 cisco2: vendor: cisco model: 3750 ip: 10.0.0.2 hp1: vendor: hp model: 1920 ip: 10.0.0.3


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# Filtrēt tikai cisco slēdžus

```python
import yaml

atvērt failu('switches.yaml') kā:
    switches = yaml.safe_load(f)

cisco_switches = {k: v for k, v in switches['switches'].items() if v['vendor'] == 'cisco'}

Saņemt pēdējo hosta adresi 172.16.0.0/28 tīklā

import ipaddress

tīkls = ipaddress.IPv4Network('172.16.0.0/28')
pēdējais_host = str(list(tīkls.hosts())[-1])
print(pēdējais_host)  # 172.16.0.14

Parsēt dhcp_snooping_table uz vārdu sarakstu

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
'''

rindas = dhcp_snooping_table.strip().split('\n')
dhcp_snooping_table_parsed = []
for rinda in rindas:
    mac, ip, interfeiss = rinda.split()
    dhcp_snooping_table_parsed.append({
        'mac': mac,
        'ip': ip,
        'interface': interfeiss
    })

NetworkSubnet klase

import ipaddress

class NetworkSubnet:
    def __init__(self, tīkls):
        self.tīkls = ipaddress.IPv4Network(tīkls)
        self.used_subnets = []

    def get_subnet(self, prefixlen):
        for subnet in self.tīkls.subnets(new_prefix=prefixlen):
            if subnet not in self.used_subnets:
                self.used_subnets.append(subnet)
                return subnet
        return None

    def show_network_pool(self):
        all_subnets = list(self.tīkls.subnets())
        available = [s for s in all_subnets if s not in self.used_subnets]
        return available

# Piemērs izmantošanai
net = NetworkSubnet('192.168.0.0/24')
subnet = net.get_subnet(28)
print(subnet)  # 192.168.0.0/28
print(net.show_network_pool())

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