Scopriamo la rete attraverso il CDP!

Step #3: Recuperiamo le informazioni del secondo apparato

Spostiamoci ora sullo switch SW-B mediante un telnet all’indirizzo che abbiamo scoperto attraverso il CDP

SW-C#telnet 192.168.0.253
Trying 192.168.0.253 ... Open

**********************************
*     NetworkingDraft.tech       *
*   (C) 2022 Dario Formicola     *
**********************************


User Access Verification

Password:
***************************************
* Lab #1                              *
* Scopriamo la rete attraverso il CDP *
* Nodo: SW-B                          *
***************************************

SW-B>enable
Password:
SW-B#

E procediamo con il recupero delle informazioni così come abbiamo fatto per SW-C.

SW-B#show version
Cisco IOS Software, vios_l2 Software (vios_l2-ADVENTERPRISEK9-M), Version 15.2(CML_NIGHTLY_20190423)FLO_DSGS7, EARLY DEPLOYMENT DEVELOPMENT BUILD, synced to  V152_6_0_81_E
Technical Support: http://www.cisco.com/techsupport

<-- output omesso -->

Cisco IOSv () processor (revision 1.0) with 574709K/209920K bytes of memory.
Processor board ID 9SMGYFUML9V
1 Virtual Ethernet interface
16 Gigabit Ethernet interfaces

SW-B#show ip int brief
Interface              IP-Address      OK? Method Status                Protocol
GigabitEthernet0/0     unassigned      YES unset  up                    up
GigabitEthernet0/1     unassigned      YES unset  up                    up
GigabitEthernet0/2     unassigned      YES unset  down                  down
GigabitEthernet0/3     unassigned      YES unset  down                  down
GigabitEthernet1/0     unassigned      YES unset  up                    up
GigabitEthernet1/1     unassigned      YES unset  down                  down
GigabitEthernet1/2     unassigned      YES unset  down                  down
GigabitEthernet1/3     unassigned      YES unset  down                  down
GigabitEthernet2/0     unassigned      YES unset  down                  down
GigabitEthernet2/1     unassigned      YES unset  down                  down
GigabitEthernet2/2     unassigned      YES unset  down                  down
GigabitEthernet2/3     unassigned      YES unset  down                  down
GigabitEthernet3/0     unassigned      YES unset  down                  down
GigabitEthernet3/1     unassigned      YES unset  down                  down
GigabitEthernet3/2     unassigned      YES unset  down                  down
GigabitEthernet3/3     unassigned      YES unset  down                  down
Vlan1                  192.168.0.253   YES NVRAM  up                    up
SW-B#

SW-B#show ipv6 int brief
GigabitEthernet0/0     [up/up]
    unassigned
GigabitEthernet0/1     [up/up]
    unassigned
GigabitEthernet0/2     [down/down]
    unassigned
GigabitEthernet0/3     [down/down]
    unassigned
GigabitEthernet1/0     [up/up]
    unassigned
GigabitEthernet1/1     [down/down]
    unassigned
GigabitEthernet1/2     [down/down]
    unassigned
GigabitEthernet1/3     [down/down]
    unassigned
GigabitEthernet2/0     [down/down]
    unassigned
GigabitEthernet2/1     [down/down]
    unassigned
GigabitEthernet2/2     [down/down]
    unassigned
GigabitEthernet2/3     [down/down]
    unassigned
GigabitEthernet3/0     [down/down]
    unassigned
GigabitEthernet3/1     [down/down]
    unassigned
GigabitEthernet3/2     [down/down]
    unassigned
GigabitEthernet3/3     [down/down]
    unassigned
Vlan1                  [up/up]
    unassigned
SW-B#

SW-B#show vlan

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi0/0, Gi0/1, Gi0/2, Gi0/3
                                                Gi1/0, Gi1/1, Gi1/2, Gi1/3
                                                Gi2/0, Gi2/1, Gi2/2, Gi2/3
                                                Gi3/0, Gi3/1, Gi3/2, Gi3/3

SW-B#sh int desc
Interface                      Status         Protocol Description
Gi0/0                          up             up
Gi0/1                          up             up
Gi0/2                          down           down
Gi0/3                          down           down
Gi1/0                          up             up
Gi1/1                          down           down
Gi1/2                          down           down
Gi1/3                          down           down
Gi2/0                          down           down
Gi2/1                          down           down
Gi2/2                          down           down
Gi2/3                          down           down
Gi3/0                          down           down
Gi3/1                          down           down
Gi3/2                          down           down
Gi3/3                          down           down
Vl1                            up             up

Anche l’apparato SW-B è uno switch con IOS virtuale, con solo l’IP 192.168.0.253 configurato sotto la VLAN 1 che è anche l’unica VLAN configurata su tutte le 16 porte delle switch.

Procediamo ora con la verifica del CDP per SW-B