Configurazione del flusso VXLAN e informazioni su Nexus 7K
Sommario
Introduzione
Questo documento descrive la configurazione della VXLAN (Virtual Extensible LAN) Flood e fornisce informazioni sugli switch Nexus serie 7000.
Prerequisiti
Requisiti
Cisco raccomanda la conoscenza dei seguenti argomenti:
- Nozioni base sul routing multicast, ad esempio Rendezvous Point (RP) e Platform Independent Multicast (PIM).
- Nozioni base sulle VXLAN
Componenti usati
Le informazioni fornite in questo documento si basano sulle seguenti versioni software e hardware:
- N77-C7710
- N77-F348XP-23
- N77-F324FQ-25
Le informazioni discusse in questo documento fanno riferimento a dispositivi usati in uno specifico ambiente di emulazione. Su tutti i dispositivi menzionati nel documento la configurazione è stata ripristinata ai valori predefiniti. Se la rete è operativa, valutare attentamente eventuali conseguenze derivanti dall'uso dei comandi.
Configurazione
Esempio di rete
Configurazioni
Queste configurazioni sono specifiche della parte VXLAN della configurazione. Queste configurazioni presuppongono la completa raggiungibilità di tutte le interfacce L3 nella topologia con il protocollo di routing scelto. Nell'esempio viene utilizzato il routing statico. Inoltre, si presume che il routing multicast sia stato stabilito sulle stesse interfacce L3
VTEP-1
feature pim system bridge-domain 50,75 feature nv overlay
feature interface-vlan feature vni vni 5000
vni 7500 ip route 10.10.10.2/32 Ethernet10/1 192.168.1.2 ip pim rp-address 192.168.1.1 group-list 224.0.0.0/4 bridge-domain 50
bridge-domain 75 encapsulation profile vni VSI_50_TO_5000 dot1q 50 vni 5000
encapsulation profile vni VSI_75_TO_7500
dot1q 75 vni 7500 bridge-domain 50 member vni 5000
bridge-domain 75
member vni 7500 interface nve1 no shutdown source-interface loopback10 member vni 5000 mcast-group 225.1.1.1
member vni 7500 mcast-group 227.1.1.1
interface Bdi50
no shutdown
ip address 10.50.50.50/24
interface Bdi75
no shutdown
ip address 10.75.75.75/24 interface Ethernet7/17
no switchport no shutdown service instance 1 vni no shutdown encapsulation profile VSI_50_TO_5000 default
service instance 2 vni
no shutdown
encapsulation profile VSI_75_TO_7500 default interface Ethernet10/1
no switchport ip address 192.168.1.1/30 ip pim sparse-mode no shutdown interface loopback10 ip address 10.10.10.1/32 ip pim sparse-mode
È importante notare che l'interfaccia interna sul VTEP (Vxlan Tunnel Endpoint) è configurata come porta di layer 3 (senza switchport). Tuttavia, non vi è alcun indirizzo IP assegnato. È anche importante notare che il valore BD definito sul VTEP non deve corrispondere all'ID vlan usato per inviare il traffico verso questo dispositivo. Tuttavia, il mapping da dot1q a VNI (Vxlan Network Identifier) definito nel profilo di incapsulamento, che viene chiamato nell'istanza del servizio sull'interfaccia interna, deve corrispondere all'ID Vlan.
VTEP-2
feature pim system bridge-domain 50,75 feature nv overlay
feature interface-vlan feature vni vni 5000
vni 7500 ip route 10.10.10.1/32 Ethernet10/7 192.168.1.1 ip pim rp-address 192.168.1.1 group-list 224.0.0.0/4 bridge-domain 50
bridge-domain 75 encapsulation profile vni VSI_50_TO_5000 dot1q 50 vni 5000
encapsulation profile vni VSI_75_TO_7500
dot1q 75 vni 7500 bridge-domain 50 member vni 5000
bridge-domain 75
member vni 7500 interface nve1 no shutdown source-interface loopback10 member vni 5000 mcast-group 225.1.1.1
member vni 7500 mcast-group 227.1.1.1
interface Bdi50
no shutdown
ip address 10.50.50.51/24
interface Bdi75
no shutdown
ip address 10.75.75.76/24 interface Ethernet7/30
no switchport no shutdown service instance 1 vni no shutdown encapsulation profile VSI_50_TO_5000 default
service instance 2 vni
no shutdown
encapsulation profile VSI_75_TO_7500 default interface Ethernet10/7
no switchport ip address 192.168.1.2/30 ip pim sparse-mode no shutdown interface loopback10 ip address 10.10.10.2/32 ip pim sparse-mode
È importante notare che l'interfaccia interna del VTEP è configurata come porta di layer 3 (senza switchport). Tuttavia, non vi è alcun indirizzo IP assegnato. È anche importante notare che il valore BD definito sul VTEP non deve corrispondere all'ID VLAN usato per inviare il traffico a questo dispositivo. Tuttavia, il mapping da dot1q a VNI definito nel profilo di incapsulamento, che viene chiamato nell'istanza del servizio sull'interfaccia interna, deve corrispondere all'ID Vlan.
Verifica
Fare riferimento a questa sezione per verificare che la configurazione funzioni correttamente.
Output di esempio
Questi output sono in stato stabile. I peer VTEP si sono scoperti a vicenda e il traffico è passato tra le due direzioni in Encrypt e Decapp.
VTEP-1
VTEP-1# show nve vni
Codes: CP - Control Plane DP - Data Plane
UC - Unconfigured SA - Suppress ARP
Interface VNI Multicast-group State Mode Type [BD/VRF] Flags
--------- -------- ----------------- ----- ---- ------------------ -----
nve1 5000 225.1.1.1 Up DP L2 [50]
nve1 7500 227.1.1.1 Up DP L2 [75]
VTEP-1# show running-config interface nve 1
interface nve1
no shutdown
source-interface loopback10
member vni 5000 mcast-group 225.1.1.1
member vni 7500 mcast-group 227.1.1.1
VTEP-1# show service instance vni detail
VSI: VSI-Ethernet7/17.1
If-index: 0x35310001
Admin Status: Up
Oper Status: Up
Auto-configuration Mode: No
encapsulation profile vni VSI_50_TO_5000
dot1q 50 vni 5000
Dot1q VNI BD
------------------
50 5000 50
VSI: VSI-Ethernet7/17.2
If-index: 0x35310002
Admin Status: Up
Oper Status: Up
Auto-configuration Mode: No
encapsulation profile vni TEST
dot1q 100 vni 7500
Dot1q VNI BD
------------------
100 7500 75
VTEP-1# show bridge-domain
Bridge-domain 50 (2 ports in all)
Name:: Bridge-Domain50
Administrative State: UP Operational State: UP
VSI-Eth7/17.1
vni5000
nve1
Bridge-domain 75 (2 ports in all)
Name:: Bridge-Domain75
Administrative State: UP Operational State: UP
VSI-Eth7/17.2
vni7500
nve1
VTEP-1# show mac address-table dynamic
Note: MAC table entries displayed are getting read from software.
Use the 'hardware-age' keyword to get information related to 'Age'
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link, E -
EVPN entry
(T) - True, (F) - False , ~~~ - use 'hardware-age' keyword to retrieve
age info
VLAN/BD MAC Address Type age Secure NTFY Ports/SWID.SSID.LID
---------+-----------------+--------+---------+------+----+------------------
* 50 547f.eeec.af43 dynamic ~~~ F F nve1/10.10.10.2
* 50 547f.eeec.af44 dynamic ~~~ F F VSI-Eth7/17.1
* 50 547f.eeec.af45 dynamic ~~~ F F nve1/10.10.10.2
* 75 547f.eeec.af44 dynamic ~~~ F F VSI-Eth7/17.2
* 75 547f.eeec.af45 dynamic ~~~ F F nve1/10.10.10.2
VTEP-1# show ip mroute detail
IP Multicast Routing Table for VRF "default"
Total number of routes: 7
Total number of (*,G) routes: 2
Total number of (S,G) routes: 4
Total number of (*,G-prefix) routes: 1
(*, 225.1.1.1/32), uptime: 19:51:28, nve(1) ip(0) pim(1)
Data Created: No
VXLAN Flags
VXLAN Encap
Stats: 0/0 [Packets/Bytes], 0.000 bps
Incoming interface: Ethernet10/1, RPF nbr: 1.1.1.1
Outgoing interface list: (count: 2)
Ethernet10/1, uptime: 19:51:09, pim, (RPF)
nve1, uptime: 19:51:28, nve
(10.10.10.1/32, 225.1.1.1/32), uptime: 19:51:28, nve(0) mrib(0) ip(0) pim(1)
Data Created: No
Received Register stop
VXLAN Flags
VXLAN Encap
Stats: 19/2274 [Packets/Bytes], 0.000 bps
Incoming interface: loopback10, RPF nbr: 10.10.10.1, internal
Outgoing interface list: (count: 1)
Ethernet10/1, uptime: 19:51:09, pim
(10.10.10.2/32, 225.1.1.1/32), uptime: 18:10:06, pim(1) mrib(1) ip(0)
Data Created: Yes
VXLAN Flags
VXLAN Decap
Stats: 9/846 [Packets/Bytes], 0.000 bps
Incoming interface: Ethernet10/1, RPF nbr: 1.1.1.2, internal
Outgoing interface list: (count: 2)
Ethernet10/1, uptime: 01:00:32, pim, (RPF)
nve1, uptime: 18:10:06, mrib
(*, 227.1.1.1/32), uptime: 12:52:13, nve(1) ip(0) pim(1)
Data Created: No
VXLAN Flags
VXLAN Encap
Stats: 0/0 [Packets/Bytes], 0.000 bps
Incoming interface: Ethernet10/1, RPF nbr: 1.1.1.1
Outgoing interface list: (count: 2)
Ethernet10/1, uptime: 12:51:52, pim, (RPF)
nve1, uptime: 12:52:13, nve
(10.10.10.1/32, 227.1.1.1/32), uptime: 12:52:13, nve(0) mrib(0) ip(0) pim(1)
Data Created: No
Received Register stop
VXLAN Flags
VXLAN Encap
Stats: 300/39850 [Packets/Bytes], 0.000 bps
Incoming interface: loopback10, RPF nbr: 10.10.10.1, internal
Outgoing interface list: (count: 1)
Ethernet10/1, uptime: 12:51:52, pim
(10.10.10.2/32, 227.1.1.1/32), uptime: 12:51:34, pim(1) mrib(1) ip(0)
Data Created: Yes
VXLAN Flags
VXLAN Decap
Stats: 22/1928 [Packets/Bytes], 0.000 bps
Incoming interface: Ethernet10/1, RPF nbr: 1.1.1.2, internal
Outgoing interface list: (count: 2)
Ethernet10/1, uptime: 00:52:14, pim, (RPF)
nve1, uptime: 12:51:34, mrib
(*, 232.0.0.0/8), uptime: 20:56:33, pim(0) ip(0)
Data Created: No
Stats: 0/0 [Packets/Bytes], 0.000 bps
Incoming interface: Null, RPF nbr: 0.0.0.0
Outgoing interface list: (count: 0)
VTEP-1# show ip arp
Flags: * - Adjacencies learnt on non-active FHRP router
+ - Adjacencies synced via CFSoE
# - Adjacencies Throttled for Glean
D - Static Adjacencies attached to down interface
IP ARP Table for context default
Total number of entries: 4
Address Age MAC Address Interface
10.50.50.1 00:11:32 547f.eeec.af44 Bdi50
10.50.50.2 00:11:14 547f.eeec.af44 Bdi50
10.75.75.1 00:10:45 547f.eeec.af44 Bdi75
10.75.75.2 00:15:04 547f.eeec.af45 Bdi75
192.168.1.2 00:05:39 547f.eeec.af43 Ethernet10/1
VTEP-1# show ip route
IP Route Table for VRF "default"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
192.168.1.0/30, ubest/mbest: 1/0, attached
*via 1.1.1.1, Eth10/1, [0/0], 20:25:13, direct
192.168.1.1/32, ubest/mbest: 1/0, attached
*via 1.1.1.1, Eth10/1, [0/0], 20:25:13, local
10.10.10.1/32, ubest/mbest: 2/0, attached
*via 10.10.10.1, Lo10, [0/0], 20:25:45, local
*via 10.10.10.1, Lo10, [0/0], 20:25:45, direct
10.10.10.2/32, ubest/mbest: 1/0
*via 1.1.1.2, Eth10/1, [1/0], 20:23:42, static
50.50.50.0/24, ubest/mbest: 1/0, attached
*via 50.50.50.50, Bdi50, [0/0], 01:18:47, direct
50.50.50.50/32, ubest/mbest: 1/0, attached
*via 50.50.50.50, Bdi50, [0/0], 01:18:47, local
75.75.75.0/24, ubest/mbest: 1/0, attached
*via 75.75.75.75, Bdi75, [0/0], 01:10:05, direct
75.75.75.75/32, ubest/mbest: 1/0, attached
*via 75.75.75.75, Bdi75, [0/0], 01:10:05, local
VTEP-2
VTEP-2# show nve vni
Codes: CP - Control Plane DP - Data Plane
UC - Unconfigured SA - Suppress ARP
Interface VNI Multicast-group State Mode Type [BD/VRF] Flags
--------- -------- ----------------- ----- ---- ------------------ -----
nve1 5000 225.1.1.1 Up DP L2 [50]
nve1 7500 227.1.1.1 Up DP L2 [75]
VTEP-2# show running-config interface nve 1
interface nve1
no shutdown
source-interface loopback10
member vni 5000 mcast-group 225.1.1.1
member vni 7500 mcast-group 227.1.1.1
VTEP-2# show service instance vni detail
VSI: VSI-Ethernet7/30.1
If-index: 0x3531d001
Admin Status: Up
Oper Status: Up
Auto-configuration Mode: No
encapsulation profile vni VSI_50_TO_5000
dot1q 50 vni 5000
Dot1q VNI BD
------------------
50 5000 50
VSI: VSI-Ethernet7/30.2
If-index: 0x3531d002
Admin Status: Up
Oper Status: Up
Auto-configuration Mode: No
encapsulation profile vni TEST
dot1q 100 vni 7500
Dot1q VNI BD
------------------
100 7500 75
VTEP-2# show bridge-domain
Bridge-domain 50 (2 ports in all)
Name:: Bridge-Domain50
Administrative State: UP Operational State: UP
vni5000
VSI-Eth7/30.1
nve1
Bridge-domain 75 (2 ports in all)
Name:: Bridge-Domain75
Administrative State: UP Operational State: UP
vni7500
VSI-Eth7/30.2
nve1
VTEP-2# show mac address-table dynamic
Note: MAC table entries displayed are getting read from software.
Use the 'hardware-age' keyword to get information related to 'Age'
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since last seen,+ - primary entry using vPC Peer-Link, E -
EVPN entry
(T) - True, (F) - False , ~~~ - use 'hardware-age' keyword to retrieve
age info
VLAN/BD MAC Address Type age Secure NTFY Ports/SWID.SSID.LID
---------+-----------------+--------+---------+------+----+------------------
* 50 547f.eeec.af44 dynamic ~~~ F F nve1/10.10.10.1
* 50 547f.eeec.af45 dynamic ~~~ F F VSI-Eth7/30.1
* 75 547f.eeec.af45 dynamic ~~~ F F VSI-Eth7/30.2
* 75 547f.eeec.af48 dynamic ~~~ F F nve1/10.10.10.1
VTEP-2# show ip mroute detail
IP Multicast Routing Table for VRF "default"
Total number of routes: 5
Total number of (*,G) routes: 2
Total number of (S,G) routes: 2
Total number of (*,G-prefix) routes: 1
(*, 225.1.1.1/32), uptime: 19:56:19, nve(1) ip(0) pim(0)
Data Created: No
VXLAN Flags
VXLAN Encap
Stats: 8/748 [Packets/Bytes], 0.000 bps
Incoming interface: Ethernet10/7, RPF nbr: 1.1.1.1
Outgoing interface list: (count: 1)
nve1, uptime: 19:56:19, nve
(10.10.10.2/32, 225.1.1.1/32), uptime: 19:56:19, nve(0) mrib(0) pim(1) ip(0)
Data Created: No
Received Register stop
VXLAN Flags
VXLAN Encap
Stats: 9/834 [Packets/Bytes], 0.000 bps
Incoming interface: loopback10, RPF nbr: 10.10.10.2
Outgoing interface list: (count: 1)
Ethernet10/7, uptime: 18:15:17, pim
(*, 227.1.1.1/32), uptime: 12:57:03, nve(1) ip(0) pim(0)
Data Created: No
VXLAN Flags
VXLAN Encap
Stats: 10/864 [Packets/Bytes], 0.000 bps
Incoming interface: Ethernet10/7, RPF nbr: 1.1.1.1
Outgoing interface list: (count: 1)
nve1, uptime: 12:57:03, nve
(10.10.10.2/32, 227.1.1.1/32), uptime: 12:57:03, nve(0) mrib(0) ip(0) pim(1)
Data Created: No
Received Register stop
VXLAN Flags
VXLAN Encap
Stats: 30/2648 [Packets/Bytes], 0.000 bps
Incoming interface: loopback10, RPF nbr: 10.10.10.2
Outgoing interface list: (count: 1)
Ethernet10/7, uptime: 12:56:45, pim
(*, 232.0.0.0/8), uptime: 18:20:36, pim(0) ip(0)
Data Created: No
Stats: 0/0 [Packets/Bytes], 0.000 bps
Incoming interface: Null, RPF nbr: 0.0.0.0
Outgoing interface list: (count: 0)
VTEP-2# show ip arp
Flags: * - Adjacencies learnt on non-active FHRP router
+ - Adjacencies synced via CFSoE
# - Adjacencies Throttled for Glean
D - Static Adjacencies attached to down interface
IP ARP Table for context default
Total number of entries: 4
Address Age MAC Address Interface
10.50.50.1 00:11:30 547f.eeec.af44 Bdi50
10.50.50.2 00:17:07 547f.eeec.af45 Bdi50
10.75.75.1 00:04:14 547f.eeec.af45 Bdi75
10.75.75.2 00:03:24 547f.eeec.af45 Bdi75
192.168.1.1 00:10:52 547f.eeec.af48 Ethernet10/7
VTEP-2# show ip route
IP Route Table for VRF "default"
'*' denotes best ucast next-hop
'**' denotes best mcast next-hop
'[x/y]' denotes [preference/metric]
'%<string>' in via output denotes VRF <string>
192.168.1.0/30, ubest/mbest: 1/0, attached
*via 1.1.1.2, Eth10/7, [0/0], 20:30:24, direct
192.168.1.2/32, ubest/mbest: 1/0, attached
*via 1.1.1.2, Eth10/7, [0/0], 20:30:24, local
10.10.10.1/32, ubest/mbest: 1/0
*via 1.1.1.1, Eth10/7, [1/0], 20:29:48, static
10.10.10.2/32, ubest/mbest: 2/0, attached
*via 10.10.10.2, Lo10, [0/0], 20:29:39, local
*via 10.10.10.2, Lo10, [0/0], 20:29:39, direct
50.50.50.0/24, ubest/mbest: 1/0, attached
*via 50.50.50.51, Bdi50, [0/0], 01:22:50, direct
50.50.50.51/32, ubest/mbest: 1/0, attached
*via 50.50.50.51, Bdi50, [0/0], 01:22:50, local
75.75.75.0/24, ubest/mbest: 1/0, attached
*via 75.75.75.76, Bdi75, [0/0], 01:14:50, direct
75.75.75.76/32, ubest/mbest: 1/0, attached
*via 75.75.75.76, Bdi75, [0/0], 01:14:50, local
Risoluzione dei problemi
Al momento non sono disponibili informazioni specifiche per la risoluzione dei problemi di questa configurazione.
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