In this lab, we will walk through a VLAN and 802.1Q Trunking deployment between Nexus and Catalyst switches. The goal is to allow MAC address propagation between the two switches to allow endpoints to resolve other endpoint MACs and enable communication between switches.
N9K-2
vlan 1,10,20
vlan 10
name VLAN10
vlan 20
name VLAN20
!
interface Ethernet1/1
spanning-tree port type edge
!q
interface Ethernet1/2
switchport access vlan 10
spanning-tree port type edge
!
interface Ethernet1/5
switchport mode trunk
SW1
vlan 10
name VLAN10
vlan 20
name VLAN20
!
interface GigabitEthernet0/0
switchport access vlan 10
switchport mode access
media-type rj45
negotiation auto
spanning-tree portfast edge
!
interface GigabitEthernet0/1
switchport access vlan 20
switchport mode access
media-type rj45
negotiation auto
spanning-tree portfast edge
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
duplex full
no negotiation auto
spanning-tree portfast edge
!
interface GigabitEthernet0/3
switchport access vlan 20
switchport mode access
media-type rj45
negotiation auto
spanning-tree portfast edge
N9K-2# show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
10 VLAN10 active Eth1/2, Eth1/5
20 VLAN20 active Eth1/3, Eth1/5
N9K-2# show interface trunk
Port STP Forwarding
--------------------------------------------------------------------------------
Eth1/5 1,10,20
SW1#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0, Gi1/1, Gi1/2
10 VLAN10 active Gi0/0
20 VLAN20 active Gi0/1, Gi0/3
SW1#show interfaces trunk
Port Mode Encapsulation Status Native vlan
Gi0/2 on 802.1q trunking 1
Gi1/3 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi0/2 1-4094
Gi1/3 1-4094
Port Vlans allowed and active in management domain
Gi0/2 1,10,20
Gi1/3 1,10,20
Port Vlans in spanning tree forwarding state and not pruned
Gi0/2 1,10,20
Gi1/3 1,10,20
VPC4
VPCS> ping 10.1.10.11
84 bytes from 10.1.10.11 icmp_seq=1 ttl=64 time=43.779 ms
84 bytes from 10.1.10.11 icmp_seq=2 ttl=64 time=44.457 ms
84 bytes from 10.1.10.11 icmp_seq=3 ttl=64 time=45.107 ms
84 bytes from 10.1.10.11 icmp_seq=4 ttl=64 time=47.130 ms
84 bytes from 10.1.10.11 icmp_seq=5 ttl=64 time=17.954 ms
VPC5
VPCS> ping 10.1.20.21
10.1.20.21 icmp_seq=1 timeout
84 bytes from 10.1.20.21 icmp_seq=2 ttl=255 time=24.435 ms
84 bytes from 10.1.20.21 icmp_seq=3 ttl=255 time=40.275 ms
84 bytes from 10.1.20.21 icmp_seq=4 ttl=255 time=27.052 ms
84 bytes from 10.1.20.21 icmp_seq=5 ttl=255 time=28.474 ms
VPC11
VPCS> ping 10.1.10.4
84 bytes from 10.1.10.4 icmp_seq=1 ttl=64 time=47.825 ms
84 bytes from 10.1.10.4 icmp_seq=2 ttl=64 time=60.588 ms
84 bytes from 10.1.10.4 icmp_seq=3 ttl=64 time=34.389 ms
84 bytes from 10.1.10.4 icmp_seq=4 ttl=64 time=51.106 ms
84 bytes from 10.1.10.4 icmp_seq=5 ttl=64 time=31.326 ms
N9K-2# show mac address-table dynamic
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link,
(T) - True, (F) - False, C - ControlPlane MAC, ~ - vsan
VLAN MAC Address Type age Secure NTFY Ports
---------+-----------------+--------+---------+------+----+------------------
* 10 0050.7966.6804 dynamic 0 F F Eth1/2
* 10 0050.7966.680b dynamic 0 F F Eth1/5
* 20 0050.7966.6805 dynamic 0 F F Eth1/3
* 20 0050.7966.680c dynamic 0 F F Eth1/5
* 20 5000.000e.0000 dynamic 0 F F Eth1/5
SW1#show mac address-table dynamic
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
10 0050.7966.6804 DYNAMIC Gi0/2
10 0050.7966.680b DYNAMIC Gi0/0
20 0050.7966.6805 DYNAMIC Gi0/2
20 0050.7966.680c DYNAMIC Gi0/1
20 5000.000e.0000 DYNAMIC Gi0/3
Total Mac Addresses for this criterion: 5
N9K-2
vlan 1,10,20
vlan 10
name VLAN10
vlan 20
name VLAN20
!
interface Ethernet1/1
spanning-tree port type edge
!q
interface Ethernet1/2
switchport access vlan 10
spanning-tree port type edge
!
interface Ethernet1/5
switchport mode trunk
SW1
vlan 10
name VLAN10
vlan 20
name VLAN20
!
interface GigabitEthernet0/0
switchport access vlan 10
switchport mode access
media-type rj45
negotiation auto
spanning-tree portfast edge
!
interface GigabitEthernet0/1
switchport access vlan 20
switchport mode access
media-type rj45
negotiation auto
spanning-tree portfast edge
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
duplex full
no negotiation auto
spanning-tree portfast edge
!
interface GigabitEthernet0/3
switchport access vlan 20
switchport mode access
media-type rj45
negotiation auto
spanning-tree portfast edge
N9K-2# show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
10 VLAN10 active Eth1/2, Eth1/5
20 VLAN20 active Eth1/3, Eth1/5
N9K-2# show interface trunk
Port STP Forwarding
--------------------------------------------------------------------------------
Eth1/5 1,10,20
SW1#show vlan brief
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0, Gi1/1, Gi1/2
10 VLAN10 active Gi0/0
20 VLAN20 active Gi0/1, Gi0/3
SW1#show interfaces trunk
Port Mode Encapsulation Status Native vlan
Gi0/2 on 802.1q trunking 1
Gi1/3 on 802.1q trunking 1
Port Vlans allowed on trunk
Gi0/2 1-4094
Gi1/3 1-4094
Port Vlans allowed and active in management domain
Gi0/2 1,10,20
Gi1/3 1,10,20
Port Vlans in spanning tree forwarding state and not pruned
Gi0/2 1,10,20
Gi1/3 1,10,20
VPC4
VPCS> ping 10.1.10.11
84 bytes from 10.1.10.11 icmp_seq=1 ttl=64 time=43.779 ms
84 bytes from 10.1.10.11 icmp_seq=2 ttl=64 time=44.457 ms
84 bytes from 10.1.10.11 icmp_seq=3 ttl=64 time=45.107 ms
84 bytes from 10.1.10.11 icmp_seq=4 ttl=64 time=47.130 ms
84 bytes from 10.1.10.11 icmp_seq=5 ttl=64 time=17.954 ms
VPC5
VPCS> ping 10.1.20.21
10.1.20.21 icmp_seq=1 timeout
84 bytes from 10.1.20.21 icmp_seq=2 ttl=255 time=24.435 ms
84 bytes from 10.1.20.21 icmp_seq=3 ttl=255 time=40.275 ms
84 bytes from 10.1.20.21 icmp_seq=4 ttl=255 time=27.052 ms
84 bytes from 10.1.20.21 icmp_seq=5 ttl=255 time=28.474 ms
VPC11
VPCS> ping 10.1.10.4
84 bytes from 10.1.10.4 icmp_seq=1 ttl=64 time=47.825 ms
84 bytes from 10.1.10.4 icmp_seq=2 ttl=64 time=60.588 ms
84 bytes from 10.1.10.4 icmp_seq=3 ttl=64 time=34.389 ms
84 bytes from 10.1.10.4 icmp_seq=4 ttl=64 time=51.106 ms
84 bytes from 10.1.10.4 icmp_seq=5 ttl=64 time=31.326 ms
N9K-2# show mac address-table dynamic
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link,
(T) - True, (F) - False, C - ControlPlane MAC, ~ - vsan
VLAN MAC Address Type age Secure NTFY Ports
---------+-----------------+--------+---------+------+----+------------------
* 10 0050.7966.6804 dynamic 0 F F Eth1/2
* 10 0050.7966.680b dynamic 0 F F Eth1/5
* 20 0050.7966.6805 dynamic 0 F F Eth1/3
* 20 0050.7966.680c dynamic 0 F F Eth1/5
* 20 5000.000e.0000 dynamic 0 F F Eth1/5
SW1#show mac address-table dynamic
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
10 0050.7966.6804 DYNAMIC Gi0/2
10 0050.7966.680b DYNAMIC Gi0/0
20 0050.7966.6805 DYNAMIC Gi0/2
20 0050.7966.680c DYNAMIC Gi0/1
20 5000.000e.0000 DYNAMIC Gi0/3
Total Mac Addresses for this criterion: 5
