cisco data center switch nexus series training presentation by zerone
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DESCRIPTION
Cisco 資料中心產品及市場定位 Cisco Nexus 1000v / 5000 / 2000 / 7000產品概觀 N5K + UCS + VM 對於虛擬化網路管理的優勢-Network Interface Virtualization (VM-FEX)TRANSCRIPT
1
Cisco Data Center Switch (Nexus Series) 產品教育訓練
David Chou 周榮年
TEL:(02)2656-5766
E-mail:[email protected]
2
Agenda
Cisco 資料中心產品及市場定位
Cisco Nexus 1000v 產品概觀
Cisco Nexus 5000 & 2000 產品概觀
N5K + UCS + VM 對於虛擬化網路管理的優勢 - Network Interface Virtualization (VM-FEX)
Cisco Nexus 7000 產品概觀
資料中心網管軟體 - DCNM
零壹解決方案體驗日
Q & A , 注意事項
3
資料中心所面臨的挑戰
4
新世代資料中心的解決方案
5
LAN/SAN SAN LAN
Cisco Unified Fabric Switching Portfolio
Nexus 7000 7009
Fab2 Module F2 Module
Nexus 1000V
Nexus 1010
Nexus 5000
Nexus 2000
Nexus 3000
MDS 9500
MDS 9100
MDS 9200
New!
Cisco NX-OS: One OS from the Hypervisor to the Data Center Core
Convergence VM-Aware
Networking
10 GbE
switching
Fabric
Extensibility
Cloud Mobility
Sc
ala
bilit
y
New!
6
或許現在您的客戶端網路架構是長這個樣子 - LAN & SAN各自獨立
Ethernet
Fibre Channel
HBA
FC
L2
L3
NIC
Aggregation
Access
Core
7
未來的架構會變成這個樣子 = Cisco Nexus + UCS
LAN SAN B SAN A
Ethernet FC
Data Center
Bridging
and FCoE
Nexus 5K &
7K
UCS Server
8
Nexus 1000V Switch
9
伺服器虛擬化 – 網路管理上所產生的問題
Problems:
VN-Link:
• 將網路的控制延伸至虛擬環境 • 管理上保有一致性
VMotion
• 虛擬機跨越不同的伺服器進行遷移，其Policy無法跟隨.
VLAN
101
• 無法觀察到虛擬交換器內的網路流量 , 因此每個虛擬機的資料流無從查起.
• 無法從實體的網路連線看到虛擬機的資料流.
10
VMW ESX
Server 2
VMW ESX
Server 1
Cisco Nexus 1000V - 提供虛擬化環境第三方的虛擬交換器
VM #5
VM #8
VM #7
VM #6
VM #4
VM #3
VM #2
VM #1
VMware vSwitch VMware vSwitch Nexus 1000V Nexus 1000V Nexus 1000V DVS
VM #8
VM #7
VM #6
VM #4
VM #3
VM #2
VM #5
Nexus 1000V 提供更進階的虛擬網路交換能力
Access Control List
L2 Security
Spam Traffic
更能對於Vmotion給予彈性化和連接的助益
VM #1
11
Nexus 5K & 2K
Switch
12
N5K & N2K 位於架構上哪一個位置？
Ethernet
Fibre Channel
HBA
FC
L2
L3
NIC
Aggregation
Access
Core
Nexus 5K
Nexus 2K
Nexus 5K
Nexus 5K
13
13 13
Q1CY11
Q4CY10
Q1CY09 Q2CY08
Nexus 5010 28-Port 1RU Switch
US$ 23,300
Nexus 5020 56-Port 2RU Switch
US$ 34,500
Nexus 5548P 48-Port 1RU Switch
US$ 25,600
Nexus 5596UP 96-Port 2RU Switch
US$ 36,800
Q2CY10
Nexus 5548UP 48-Port 1RU Switch
US$ 25,600
The New Nexus 5500 Platform Product Hierarchy
• Highly flexible 1/10G Line-rate switches
• Unified Port capability
• Layer-3 support
• Increased FEX scale (24 FEXs per 5K)
• Adapter-FEX/VM-FEX
• Cisco FabricPath
N5K Second Generation
14
Cisco Nexus 5548UP / 5596UP
Performance(效能)
Versatility(多樣性)
Flexibility(高彈性)
Highest density 10G
switch with wire-speed
performance and low
latency
Layer 3 Routing
or Layer 2 Cisco
FabricPath ready
Unified Ports gives users
the flexibility to customize
different personalities for
each port
Scalability(可量性)
Increased FEX, MAC,
VLAN, Multicast
scalability
15
Unified Ports 更方便的去選擇網路埠型式的使用
Unified Port
Native FC Lossless Ethernet –
FCoE, iSCSI, NAS
Expansion Module 32 x Fixed ports 1/10 GE or 1/2/4/8G FC
Nexus 5548UP / 5596UP
All ports are Unified capable
16
Nexus 5500 Expansion Modules
8 ports
1/10 GE
+
8 ports
1/2/4/8 G FC
16 ports
1/10 GE
16 ports
Unified 1/10 GE or 1/2/4/8 G
FC
17
Nexus 5548P
Nexus 5548UP
Nexus 5596UP
N55-M160L3
N55-D160L3
18
IT人員管理的考量
SiSi SiSi
Campus and Data Center Networks
Servers
Access SiSi SiSi
Access
Distribution
龐大繁雜的網路備援環境 = 對網路管理的一大挑戰
網路故障所需要的恢復時間 = 企業的停工期間影響
網路資源的運用沒有效率 = 企業投資的浪費
STP/HSRP
NIC Teaming
大量增加的real-time網路應用 = 對網路穩定要求倍增
19
跨交換器雙鏈路同時運作,頻寬不浪費
Virtual Port Channel – vPC 跨機箱多鏈路捆綁，增加使用頻寬
避免乙太網路環路(Spanning-tree loop)
使網路架構更簡單
Virtual Port Channel
L2
SiSi SiSi
Non-vPC vPC Physical Topology Logical Topology
20
最多提昇16倍的頻寬使用效能
提高兩倍的網路使用能力 (No Spanning-Tree Issues)
簡化IT維運，提高IT效率
Traditional Spanning Tree Based Network FabricPath Based Network
Fu
lly N
on
-Blo
ckin
g
2, 048 Servers
8 Access Switches 64 Access Switches
2, 048 Servers
Blocked Links
Ov
ers
ub
scri
pti
on
16:1
8:1
2:1
4
Pod
s
Network Fabric
Cisco FabricPath - 支援L2多路徑拓樸 , 所有鏈路都可用
21
FCoE
Fibre Channel Traffic
Ethernet
Eth
ern
et
Head
er
FC
oE
H
ead
er
FC
H
ead
er
FC Payload CR
C
EO
F
FC
S
Byte 0 Byte 2229
SAN (FCoE)
LAN (Ethernet)
CNA = Converged Network Adapter
CN
A
CN
A
LAN SAN
• Encapsulation of FC
Frames over Ethernet
• Enables FC to Run
on a Lossless Ethernet
Fibre Channel over Ethernet (FCoE) - 整合LAN & SAN的大功臣
22
Unified Fabric Begins at Access Unifying Server Access with Fibre Channel over Ethernet
FCoE allows FC SAN flows and LAN flows to share a lossless Ethernet link
Reduces adapter s, cables, power at the access layer
Combines LAN access switches and SAN edge switches
Allows standardized I/O and symmetric I/O services to virtualized servers
The next evolution of FC/SCSI allowing SAN access to the economy of scale and roadmap of Ethernet without sacrificing capability
LAN SAN B SAN A
Traditional Network
Ethernet FC
Ethernet FC FC
Unified Fabric at Access Layer
LAN SAN B SAN A
Ethernet FC
Data Center
Bridging
and FCoE
23
N2148T 48 Port 1000M Host Interfaces
4 x 10G Uplinks
N2224TP 24 Port 100/1000M Host Interfaces
2 x 10G Uplinks
N2248TP/N2248TP-E 48 Port 100/1000M Host Interfaces
4 x 10G Uplinks
FET-10G Cost Effective Fabric Extender
Transceiver
Nexus 2000 Fabric Extenders – 需搭配N5K or N7K
N2232PP 32 Port 1/10G FCoE Host
Interfaces
8 x 10G Uplinks
N2232TM 32 Port 1/10GBASE-T Host Interfaces
8 x 10G Uplinks (Module)
24
N2K Fabric Extended 提供Cabling線路彈性化
10/12/2012 Cisco Systems Confidential, Non-Disclosure Required
Rack-1 Rack-2 Rack-3
Access
Layer
Servers
Core
Layer
VSS/vPC
Rack-N
Nexus 2000 Fabric Extender
Nexus 5000
N5K 管理所有的N2K，如同SuperVisor
N2K 就像是Line Card給SuperVisor(N5K)控管
N2K提供100M, GE 10 GE FCoE server access
25
25 25
Q1CY11
Q4CY10
Q1CY09 Q2CY08
Nexus 5010 28-Port 1RU Switch
US$ 23,300
Nexus 5020 56-Port 2RU Switch
US$ 34,500
Nexus 5548P 48-Port 1RU Switch
US$ 25,600
Nexus 5596UP 96-Port 2RU Switch
US$ 36,800
Q2CY10
Nexus 5548UP 48-Port 1RU Switch
US$ 25,600
The New Nexus 5500 Platform Product Hierarchy
• Highly flexible 1/10G Line-rate switches
• Unified Port capability
• Layer-3 support
• Increased FEX scale (24 FEXs per 5K)
• Adapter-FEX/VM-FEX
• Cisco FabricPath
N5K Second Generation
26
虛擬化網路管理的優勢 –
Adapter FEX & VM
FEX
27
© 2009 Cisco Systems Inc. All rights reserved. UCS Technical Training – Overview
Adapter Offerings
10
Gb
E/F
Co
E
PC
Ie B
us
FC
10G
bE
Ethernet or HBA
CNA
Virtualization
PC
Ie x
16
10
Gb
E/F
Co
E
vN
ICs
Eth
0
FC
1
2
FC
3
Eth
12
7
Eth
• UCS P81E
• more vNICs can be use
• NIC Teaming done by HW
• Emulex and Qlogic
• 2 Fibre Channel
• 2 Ethernet
• NIC Teaming through bonding driver
• Emulex / Qlogic (HBA)
• Broadcom Ethernet
• NIC Teaming through bonding driver
28
It supports NIC partitioning to the OS and 802.1BR to the switch In A-FEX mode: support for up to 16 Eth vNIC and 2 FC vHBA
In VM-FEX mode: support for up to 96 vNics
Cisco UCS Virtual Interface Card UCS P81E Virtual Interface Card
29
One Network Parent Switch to Application—Single Point of Management
Hypervisor
VM-FEX
UCS C-Series + Nexus5500 提供網路介面虛擬化
IEEE 802.1BR*
Network
Manager
IEEE 802.1BR* IEEE 802.1BR*
*IEEE 802.1BR pre-standard
Adapter-FEX Legacy
Manage Network All the
Way to the OS
Interface—Physical
and Virtual
FEX
FEX Architecture
• Consolidates network management
• FEX managed as line card of parent switch
Adapter-FEX
• Consolidates multiple 1Gb interface into a
single 10Gb interface
• Extends network into server
VM-FEX
• Consolidates virtual and physical network
Each VM gets a dedicated port on switch
30
Hypervisor
Cisco VIC
虛擬機網路資料流會怎麼跑?
Server Virtualization
Hypervisor
VM VM VM VM VM VM VM VM
VETH
VNIC
Server Server
Nexus 5500
Cisco VIC
31
Nexus 7K Switch
32
N7K 位於架構上哪一個位置？
Ethernet
Fibre Channel
HBA
FC
L2
L3
NIC
Aggregation
Access
Core Nexus 7K
Nexus
7K
33
Cisco Nexus 7000 Series
Nexus 7009 Nexus 7010 Nexus 7018
Fabric Bandwidth 8.8 Tbps 9.9 Tbps 18.7 Tbps
Slots 7 I/O + 2 sup 8 I/O + 2 sup 16 I/O + 2 sup
Height 14 RU 21 RU 25 RU
BW / Slot Fab 1 N/A 230 Gig / slot 230 Gig / slot
BW / Slot Fab 2 550 Gig / Slot 550 Gig / slot 550 Gig / slot
Application Data Center and
Campus Core
Data Center Large Scale Data Center
Highest Density 1G / 10G / 40G / 100GE Switching Platform in Industry
34
Nexus 7000 Fabric Family Fabric 1 Only Supported on Nexus 7010 and 7018
46 Gbps per slot per fabric
Provides 230 Gbps per slot with 5 fabric modules
N7K-C7018-FAB-1
N7K-C7010-FAB-1
Fabric 2 Supported all Nexus 7000 Series
110 Gbps per fabric per slot
Provides 550 Gbps per slot with 5 fabric
modules
N7K-C7009-FAB-2
N7K-C7018-FAB-2 N7K-C7010-FAB-2
35
Fabric1 Module Capacity
46Gbps 92Gbps 138Gbps 184Gbps 230Gbps per slot bandwidth
Nexus 7018
Fabric Modules
1 Crossbar
Fabric
ASICs
2 Crossbar
Fabric
ASICs
5 Crossbar
Fabric
ASICs
46Gbps/slot
46Gbps/slot
46Gbps/slot
46Gbps/slot
46Gbps/slot
4 Crossbar
Fabric
ASICs
3 Crossbar
Fabric
ASICs
1 x 23G channel per supervisor slot
2 x 23G channels per I/O module slot
36
最多提昇16倍的頻寬使用效能
提高兩倍的網路使用能力 (No Spanning-Tree Issues)
簡化IT維運，提高IT效率
Traditional Spanning Tree Based Network FabricPath Based Network
Fu
lly N
on
-Blo
ckin
g
2, 048 Servers
8 Access Switches 64 Access Switches
2, 048 Servers
Blocked Links
Ov
ers
ub
scri
pti
on
16:1
8:1
2:1
4
Pod
s
Network Fabric
Cisco FabricPath - 支援L2多路徑拓樸 , 所有鏈路都可用
37
L2 Domain Elasticity - Fabric Path - LAN Extensions
VN-link notifications
IP localization - Optimal Routing - Route Portability
VM-awareness - VN-link intelligence
Storage Elasticity - SAN Extensions
Service Localization - Any service anywhere
OTV
OTV
OTV
OTV
Fabric Consolidation - Unified Fabric & I/O - Device Virtualization - Segmentation
OTV(Overlay Transport Virtualization) 實現跨資料中心互聯的解決方案 - 解決Layer2互聯的需求
38
跨交換器雙鏈路同時運作,頻寬不浪費 Virtual Port Channel – vPC
跨機箱多鏈路捆綁，增加使用頻寬
避免乙太網路環路(Spanning-tree loop)
使網路架構更簡單
Virtual Port Channel
L2
SiSi SiSi
Non-vPC vPC Physical Topology Logical Topology
39
VDC – Virtual Device Context
Flexible separation/distribution of hardware resources and software components
Complete data plane and control plane separation
Complete software fault isolation
Securely delineated administrative contexts
Forwarding engine scalability with appropriate interface allocation
Infrastructure
Kernel
VDC 1
VDC 2
VDC 3
Layer 2 Protocols Layer 3 Protocols
VLAN
PVLAN
OSPF
BGP
EIGRP
GLBP
HSRP
IGMP
UDLD
CDP
802.1X STP
LACP PIM CTS SNMP
… …
VDC 1
VDC 4
Layer 3 Protocols
OSPF
BGP
EIGRP
GLBP
HSRP
IGMP
PIM SNMP
…
VDC 2
Layer 2 Protocols
VLAN
PVLAN
UDLD
CDP
802.1X STP
LACP CTS
…
Nexus 7000的虛擬化架構功能 - 可虛擬化成多個資源獨立的交換器
40
Supervisor Engine
主要提供Control Plan & Management
Sup1 Sup2 Sup2E
CPU Dual-Core Xeon Quad-Core Xeon 2 x Quad-Core Xeon
Speed 1.66 Ghz 2.13 GHz 2.13 GHz
Memory 8G 12 GB 32 GB
NX-OS
Release 4.0 or later 6.1 or later 6.1 or later
VDCs 4 4+1 8+1
FEX 32 FEX/1536 Ports 32 FEX/1536 Ports 48 FEX/1536 Ports
41
Nexus 7000 M1 Modules Services Rich Modules
N7K-M132XP-12(L) 32-Port 10GE
SFP+ SR, LR, ER and ZR
80 Gbps per slot
Fabric Extender Support, 802.1ae Link-Sec
4:1 over-sub or 1:1 line rate mode
LISP Support
N7K-M148GT-11(L) 48-port 10/100/1000
RJ-45 Copper
46 Gbps per slot
N7K-M148GS-11(L) 48-port 1GE SFP
SX, LX, ZX, T and xWDM
46 Gbps per slot
N7K-M108X2-12L 8-Port 10GE
X2 Optics – SR, LR, ZR. xWDM
80 Gbps per slot, 120 MPPS
Linerate @64byte IPv4
Cisco Confidential
―XL‖ Version
Available ―XL‖ Capable
―XL‖ Version
Available
―XL‖ Version
Available
42
Nexus 7000 M2 Modules Next Generation Services Rich Modules
N7K-M224XP-23L 24-port 10GE
10G SFP+ SR, LR, LRM, ER, ZR and DWDM
CX-1 Twinax Cable Support
Non-Blocking 240 Gb/Slot
FEX Support
N7K-M206FQ-23L 6-port 40 GE
40G SR4, LR4 QSFP Optics
CR4 7 and 10m copper support
QSFP to 4 x 10G SFP+ Octopus Cable
Non Blocking 240 Gb/Slot
N7K-M202CF-22L 2-Port 100GE
100G CFP LR4, SR10
40G CFP SR4, LR4
Non-Blocking 200 Gb/Slot
Cisco Confidential
43
Nexus 7000 F-Series Modules Higher Density 10G Scale
N7K-F248XP-25 48-port 1/10GE
10G SFP+ SR, LR, LRM, ER, ZR and DWDM
10G CX1 Twinax Cable Support
L3/L2 (Requires F2 VDC)
Non-Blocking 480Gb/Slot
FEX, FCoE
N7K-F248XT-25 48-port 1/10G-BASE-T
10G-Base-T
Cat 6/6a/7 Cabling
L3/L2 (Requires F2 VDC)
Non-Blocking 480Gb/Slot
N7K-F132XP-15 32-Port 1/10GE
10G SFP+ SR, LR, ER, LRM, ZR and DWDM
10G CX1 Twinax Cable Support
Layer 2 Only (Interop w/ M-Series)
230 Gb/Slot
FCoE
Cisco Confidential
44
Cisco Nexus 7000 系列 資料中心等級交換器
零服務中斷設計(ISSU)
靈活的系統運作
獨立式管理介面架構
富延展性背板結構設計
具備40GbE/100GbE網路介面能力
具備統合通道能力
具可虛擬化架構設計
15Tb+ 交換傳輸能力
高效能實體與電力設計
基礎架構擴充性
傳輸彈性
運作持續性
45
Management Tool -
DCNM
46
DCNM Strategic Vision
Yesterday Today Tomorrow
Cu
sto
mer
Valu
e
Storage Mgmt Ethernet Mgmt
SAN LAN
FC
Eth
DCNM Fabric
Manager
Converged Operations Mgmt
MDS 9000
FCoE
Nexus 7000
DCNM
(Converged)
Integrated Data Center
Management
Network
Net Svcs ITSM
Compute
47
DCNM Packaging & Licensing
DCNM-SAN
DCNM-LAN
DCNM (converged)
One SW package
• Fabric Manager DCNM-SAN Essentials
• Fabric Manager Server DCNM-SAN Advanced
DCNM-SAN
Essentials
DCNM-SAN
Advanced
Free. Discovery,
Configuration,
Fault, Topology
$$. Dashboards, VM-aware
path, Perf trending, FCoE
DCNM-LAN
Essentials
DCNM-LAN
Advanced
Free. Nexus 7K – basic
Nexus 1/2/4/5K – All features
$$. Nexus 7K – All features
Nexus 1/2/4/5K – All features
48
零壹解決方案體驗日
49
50
Production Recovery /Test/Dev
SnapMirror
VMware vSphere
vCenter Server Site Recovery
Manager
VMware vSphere
vCenter Server Site Recovery
Manager
10G
FC 1G
SnapVault
vPC vPC
vPC
Demo Topology
51
Q & A , 注意事項
52
Q & A , 注意事項
Virtual Interface Card (P81E)能否安裝在它牌伺服器上使用VM-FEX功能?
Ans： P81E可以裝在它牌伺服器，但其功能僅是傳統CNA Card，不能使用VM-FEX功能.
Adapter-FEX & VM-FEX功能僅能在Nexus 5500上使用，目前VM-FEX
License免費～
Nexus5K & 7K若要整合SAN的環境，需要加買Storage License，License是8埠為一組的計算方式
一台N5K最多可以接多少台N2K?
Ans： L3 Mode 8台 ; L2 Mode 24台
一台N7K最多可以接多少台N2K?
Ans： Sup1 32台 ; Sup2 32台 ; Sup2E 48台
53
N7K VDC功能 , 模組分配使用上的限制.
F2 Only
VDC
M1-F1 Mix VDC F2 Only
Chassis
M1-F1-F2 Mix
VDC
Q & A , 注意事項
54
Classic Layer 2 Feature Set
Classic Layer 3 Feature Set
Multicast Features Set
Security Features Set
QoS Feature Set
Virtual Device Context
MPLS OTV LISP
FabricPath FCoE
Common
Baseline Features Advanced Features
N7K Line Card功能上的差異.
Q & A , 注意事項
55
Nexus 7009
Nexus 7010
Nexus 7018
Forwarding Capacity (Tbps)
8.8 9.9* 18.7*
Packets per Second (Mpps)
420 480 960
10/100/1000 ports/system
336 384 768
GE SFP ports/system
336 384 768
10 GE ports/system** 336 384 768
* Based on Fab2s
** Based on LCs available at FCS
Q & A , 注意事項 N7K 硬體效能比較表.
56
Port / PortChannel
Virtual
PortChannel
LACP
VLAN 802.1q /
PVLAN
STP (MST, RPVST)
ACL (Mac, IP,
VLAN)
Traffic Storm
Control
AAA
Module
Tempeature
Hw Res Utilization
w/ TCAM statistics
SPAN
Discovery & Inventory
L1 & L2 Topology Map
Configuration Validation
Fault Management
Traffic Statistics Reports
Backup & Restore
RBAC
GUI Java Desktop
Web Services & Java API
Virtual Device Context
802.1X
GLBP, Object Tracking, Key
Chain
HSRP
DHCP Snooping
Dynanic ARP Inspection
IP Source Guard
Port Security
Tunnel Interface
Configuration Change
Control (archive, roll-back
and differentiation)
OS Image Management
Advanced
Essentials
Port / PortChannel
Virtual
PortChannel
LACP
VLAN 802.1q /
PVLAN
STP (MST, RPVST)
ACL (Mac, IP,
VLAN)
AAA
SPAN
Discovery & Inventory
L1 & L2 Topology Map
Configuration Validation
Fault Management
Traffic Statistics Reports
Backup & Restore
RBAC
GUI Java Desktop
Web Services & Java API
DHCP Snooping
Dynamic ARP Inspection
IP Source Guard
Port Security
Tunnel Interface
Configuration Change
Control (archive, roll-back
and differentiation)
OS Image Management
Essentials
Discovery & Inventory
Backup & Restore
RBAC
GUI Java Desktop
Unified Management
(FCoE)
Fabric-wide configuration
Fabric-wide visualization
& topology
Fabric Monitoring
SMI-S/ Web Services API
FM Federation
Performance Manager
Multiple Session View/Open
Multiple Fabric View/Open
Fabric Report Generation &
navigation
FCIP (separate license req’d)
DMM (separate license req’d)
SME (separate license req’d)
IOA (separate license req’d)
Secure Erase (separate license
req’d)
Advanced
Essentials
DCNM-LAN Nexus 7K DCNM-LAN Nexus 5K/2K DCNM-SAN
Nexus 7K/5K/MDS
Q & A , 注意事項
DCNM License比較表.
57
Cisco Nexus 1000V Architecture
Virtual Center
VMW ESX
Server 1
VMware vSwitch
VMW ESX
Server 2
VMware vSwitch
VMW ESX
Server 3
VMware vSwitch
VM
#1
VM
#4
VM
#3
VM
#2
VM
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Nexus 1000V
VSM
VEM VEM VEM Nexus 1000V DVS
Virtual Supervisor Module (VSM)
Virtual or Physical appliance running NX-OS (supports HA)
Performs management, monitoring, & configuration
Tight integration with VMware Virtual Center
Virtual Ethernet Module (VEM)
Enables advanced networking capability on the hypervisor
Provides each VM with dedicated ―switch port‖
Collection of VEMs = 1 DVS
veth3 veth6 veth5 veth4 veth7 veth23 veth18 veth8 veth31 veth33 veth32 veth32
eth1/1 eth1/2 eth2/1 eth2/2 eth3/1 eth3/2
Q & A , 注意事項
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