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一、實驗拓撲：
由于條件有限，使用兩個N5K做基本的vPC實驗，Peer Keepalive Link使用的是兩個Nexus 5K的Mgm0接口。
二、配置步驟：
1、先構建vPC domain，并在domain下定義role優先級、system優先級、PKL。
2、然后配置Port-channel作為PL。
3、配置vPC成員端口，配置vPC。
4、配置Catalyst4500X交換機的Port-channel。
N5K-1
hostname N5K-1
feature telnet
feature interface-vlan
feature lacp
feature vpc
vlan 1, 10
vrf context management
vpc domain 10
peer-switch >>>>對于其他的SW，看到的是同一個MAC地址？
role priority 100 >>>這個值需要不同，小的成為Primary，大的成為Secondary，如果一樣，小的MAC成為Primary
system-priority 2100 >>>這個值在同一個domain需要配置為一致
peer-keepalive destination 172.16.1.2 source 172.16.1.1
delay restore 150
interface Vlan10
no shutdown
ip address 10.1.1.1/24
interface port-channel10
switchport mode trunk
switchport trunk allowed vlan 1,10
spanning-tree port type network
speed 10000
vpc peer-link
interface port-channel20
switchport mode trunk
vpc 20
interface Ethernet1/1
switchport mode trunk
switchport trunk allowed vlan 1,10
channel-group 10 mode active
interface Ethernet1/5
switchport mode trunk
switchport trunk allowed vlan 1,10
channel-group 10 mode active
interface Ethernet1/9
switchport mode trunk
speed auto
channel-group 20 mode active
interface mgmt0
vrf member management
ip address 172.16.1.1/24
N5K-2
hostname N5K-2
feature telnet
feature interface-vlan
feature lacp
feature vpc
vlan 1, 10
vrf context management
vpc domain 10
peer-switch
role priority 101
system-priority 2100
peer-keepalive destination 172.16.1.2 source 172.16.1.1
delay restore 150
interface Vlan10
no shutdown
ip address 10.1.1.1/24
interface port-channel10
switchport mode trunk
switchport trunk allowed vlan 1,10
spanning-tree port type network
speed 10000
vpc peer-link
interface port-channel20
switchport mode trunk
vpc 20
interface Ethernet1/1
switchport mode trunk
switchport trunk allowed vlan 1,10
channel-group 10 mode active
interface Ethernet1/5
switchport mode trunk
switchport trunk allowed vlan 1,10
channel-group 10 mode active
interface Ethernet1/9
switchport mode trunk
speed auto
channel-group 20 mode active
interface mgmt0
vrf member management
ip address 172.16.1.1/24
C4500-X
vlan 1,10
interface vlan10
ip address 10.1.1.3 255.255.255.0
interface range tenGigabitEthernet 1/1 ， tenGigabitEthernet 1/3
channel-group 20 mode active
interface Port-channel 20
switch mode trunk
vpc 20
N5K-1# sho int brief
--------------------------------------------------------------------------------
Ethernet VLAN Type Mode Status Reason Speed Por
t
Interface Ch
#
--------------------------------------------------------------------------------
Eth2/1 1 eth access up none 10G(D) --
Eth2/2 1 eth access down SFP not inserted 10G(D) --
Eth2/3 1 eth access down SFP not inserted 10G(D) --
Eth2/4 1 eth access down SFP not inserted 10G(D) --
Eth2/5 1 eth access up none 10G(D) --
Eth2/6 1 eth access down SFP not inserted 10G(D) --
Eth2/7 1 eth access down SFP not inserted 10G(D) --
Eth2/8 1 eth access down SFP not inserted 10G(D) --
Eth2/9 1 eth fabric up none 10G(D) -- >>>>如要配置FEX，該接口的模式為switchport mode fex-fabric
Eth2/10 1 eth access down SFP not inserted 10G(D) --
Eth2/11 1 eth access down SFP not inserted 10G(D) --
Eth2/12 1 eth access down SFP not inserted 10G(D) --
Eth2/13 1 eth access down SFP not inserted 10G(D) --
Eth2/14 1 eth access down SFP not inserted 10G(D) --
Eth2/15 1 eth access down SFP not inserted 10G(D) --
Eth2/16 1 eth access down SFP not inserted 10G(D) --
Eth2/17 1 eth access down SFP not inserted 10G(D) --
Eth2/18 1 eth access down SFP not inserted 10G(D) --
Eth2/19 1 eth access down SFP not inserted 10G(D) --
Eth2/20 1 eth access down SFP not inserted 10G(D) --
Eth2/21 1 eth access down SFP not inserted 10G(D) --
Eth2/22 1 eth access down SFP not inserted 10G(D) --
Eth2/23 1 eth access down SFP not inserted 10G(D) --
Eth2/24 1 eth access down SFP not inserted 10G(D) --
Eth2/25 1 eth access down SFP not inserted 10G(D) --
Eth2/26 1 eth access down SFP not inserted 10G(D) --
Eth2/27 1 eth access down SFP not inserted 10G(D) --
Eth2/28 1 eth access down SFP not inserted 10G(D) --
Eth2/29 1 eth access down SFP not inserted 10G(D) --
Eth2/30 1 eth access down SFP not inserted 10G(D) --
Eth2/31 1 eth access down SFP not inserted 10G(D) --
Eth2/32 1 eth access down SFP not inserted 10G(D) --
--------------------------------------------------------------------------------
Port VRF Status IP Address Speed MTU
--------------------------------------------------------------------------------
mgmt0 -- up 172.16.1.1 1000 1500
剛配置了PL的時候：
N5K-1# sho vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id : 10
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : primary
Number of vPCs configured : 0
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Enabled (timeout = 240 seconds)
vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po10 up 1,10
配置了連接C4500-X的vPC的時候
N5K-1# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id : 10
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status : success
Per-vlan consistency status : success
Type-2 consistency status : success
vPC role : primary
Number of vPCs configured : 1
Peer Gateway : Disabled
Dual-active excluded VLANs : -
Graceful Consistency Check : Enabled
Auto-recovery status : Enabled (timeout = 240 seconds)
vPC Peer-link status
---------------------------------------------------------------------
id Port Status Active vlans
-- ---- ------ --------------------------------------------------
1 Po10 up 1,10
vPC status
----------------------------------------------------------------------------
id Port Status Consistency Reason Active vlans
------ ----------- ------ ----------- -------------------------- -----------
20 Po20 up success success 1,10
查看一致性參數
N5K-1# show vpc consistency-parameters interface port-channel 10
Note: **** Global type-1 parameters will be displayed for peer-link *****
Legend:
Type 1 : vPC will be suspended in case of mismatch
Name Type Local Value Peer Value
------------- ---- ---------------------- -----------------------
QoS 2 ([], [], [], [], [], ([], [], [], [], [],
[]) [])
Network QoS (MTU) 2 (1538, 0, 0, 0, 0, 0) (1538, 0, 0, 0, 0, 0)
Network Qos (Pause) 2 (F, F, F, F, F, F) (F, F, F, F, F, F)
Input Queuing (Bandwidth) 2 (100, 0, 0, 0, 0, 0) (100, 0, 0, 0, 0, 0)
Input Queuing (Absolute 2 (F, F, F, F, F, F) (F, F, F, F, F, F)
Priority)
Output Queuing (Bandwidth) 2 (100, 0, 0, 0, 0, 0) (100, 0, 0, 0, 0, 0)
Output Queuing (Absolute 2 (F, F, F, F, F, F) (F, F, F, F, F, F)
Priority)
STP Mode 1 Rapid-PVST Rapid-PVST
STP Disabled 1 None None
STP MST Region Name 1 "" ""
STP MST Region Revision 1 0 0
STP MST Region Instance to 1
VLAN Mapping
STP Loopguard 1 Disabled Disabled
STP Bridge Assurance 1 Enabled Enabled
STP Port Type, Edge 1 Normal, Disabled, Normal, Disabled,
BPDUFilter, Edge BPDUGuard Disabled Disabled
STP MST Simulate PVST 1 Enabled Enabled
Interface-vlan admin up 2 10 10
Interface-vlan routing 2 1,10 1,10
capability
IGMP Snooping Group-Limit 2 4000 4000
Allowed VLANs - 1,10 1,10
Local suspended VLANs - - -
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