ARUBA WLANS 101 AND DESIGN FUNDAMENTALS Aaron...
Transcript of ARUBA WLANS 101 AND DESIGN FUNDAMENTALS Aaron...
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#ATM15ANZ | @ArubaANZ
ARUBA WLANS 101 AND DESIGN FUNDAMENTALS
Aaron Scott November 2015
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CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved. 2 #ATM15ANZ | @ArubaANZ
Agenda
• Mobility controller architecture • Aruba Instant architecture • IAP-VPN • Management platforms – Aruba Central – AirWave
• Discussion & Questions
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CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved. 3 #ATM15ANZ | @ArubaANZ
Deployment types
• Mobility Controller: Master-local • Mobility Controller: All masters • Instant • Instant: IAP-VPN • Hybrid! (all of the above, mix and match)
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Mobility Controller Architecture
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5 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
Mobility Controller Family
256 APs 4,096 IPSec
512 APs 16,384 IPSec
1,024 APs 24,576 IPSec
2,048 APs 32,768 IPSec
7200 SERIES
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6 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
Mobility Controller Family CLOUD SERVICES CONTROLLERS
16 APs Can be powered via PoE
64 APs
32 APs 10 PoE+
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7 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
Mobility Controller Family CLOUD SERVICES CONTROLLERS
32 APs, 24 PoE+, 2x10G
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8 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Campus physical topology
Master backup
Master active
Local Controller Local Controller
Datacenter Datacenter
EDGE EDGE EDGE
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9 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Campus logical topology
Master standby
Master active
Local Controller Local Controller
IPSEC
GRE PRIMARY
GRE STANDBY
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10 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
L2 Deployment
Core/Distribution Switch
Controller
Tagged link
MGMT 30 10.200.30.1
CORP CLIENTS 31 10.200.31.1
BYOD CLIENTS 32 10.200.32.1
GUEST 33 10.200.33.1
30 10.200.30.5
31
32
33 10.200.33.5
BYOD Client
DNS / DHCP
IP 10.200.32.51 GW 10.200.32.1
IP HELPER
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11 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
L3 Deployment
WAN/Core/Distribution Router
TRANSIT 254 10.200.254.2/30
LOOPBACK lo 10.200.30.1
CORP CLIENTS 31 10.200.31.1
BYOD CLIENTS 32 10.200.32.1
GUEST 33 10.200.33.1
BYOD Client
DNS / DHCP
Controller
IP 10.200.32.51 GW 10.200.32.1
Transit link
10.200.254.1/30
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Master controller responsibilities
• Policy configuration • Wireless security (WIPS / RFProtect) • AP white lists (CAPs w/ CPsec and RAPs) • Initial AP configuration • Authentication and roles
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Local controller responsibilities
• AP and session termination – Terminates AP tunnels – User traffic processed and forwarded
• RFProtect enforcement and blacklisting • ARM • Mobility • QoS
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Controller scaling
• Controller scaling table (VRD) • The important numbers – AP capacity – User/device capacity << important! – Tunnel capacity
• WMS scaling for master controller – Master controller may need to be larger than the locals depending
on the environment
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Controller scaling
• Platform – 7000 series (7005/7010/7024/7030) should only be used as local
controllers* – 7200 series should be master for multiple 7000 locals
• Failover capacity
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Campus Forwarding Modes
• Tunnel • Decrypt-tunnel • Bridge
• Configured per virtual-ap • Choose based on network topology and requirements
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Tunnel
• All traffic is tunneled back to controller • User VLANs live in controller • Wired network is a high-speed overlay
network • User traffic passes through stateful
firewall and deep packet inspection engine (*on 7 series controllers)
Mobility Controller
Access Point
GRE Tunnel: Encrypted
Tunnel-Mode
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Decrypt-tunnel (d-tunnel)
• User VLANs live in controller • AP decrypts traffic and strips 802.11
headers • AP adds 802.3 headers and frame is
encapsulated in GRE tunnel to controller
• Controller applies firewall policies to traffic
Mobility Controller
Access Point
GRE Tunnel: Unencrypted
Decrypt-Tunnel-Mode
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Bridge
• User traffic bridged out to local network • User VLANs live in edge network • Authentication traffic tunneled to
controller • Control plane security (cpsec) required • Captive portal authentication is not
supported
Access Point
Bridge Mode Access Switch
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Campus Redundancy
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21 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Master-Local Redundancy Standby Master Local 1
Local 2
Local 1
Local 2
Local
Master
Master
Master Local
Local n
Local n
Master
Fully Redundant
Redundant Aggregation
Hot Standby
No Redundancy
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22 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
VRRP Failover (L2)
LMS-IP: 172.16.100.5
172.16.100.2 VRRP MASTER
172.16.100.5 VIRTUAL IP
172.16.100.3 VRRP BACKUP
GRE TUNNEL SRC-IP <AP>
DST-IP: 172.16.100.5
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23 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
VRRP Failover (L2)
LMS-IP: 172.16.100.5
172.16.100.5 VIRTUAL IP
172.16.100.3 VRRP MASTER
GRE TUNNEL SRC-IP <AP>
DST-IP: 172.16.100.5
AP RE-BOOTSTRAPS
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24 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Backup-LMS (L3)
LMS-IP: 172.16.100.2 BACKUP LMS-IP: 10.50.20.2
172.16.100.2 10.50.20.2
GRE TUNNEL SRC-IP <AP>
DST-IP: 172.16.100.2
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25 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Backup-LMS (L3)
LMS-IP: 172.16.100.2 BACKUP LMS-IP: 10.50.20.2
172.16.100.2 10.50.20.2
GRE TUNNEL SRC-IP <AP>
DST-IP: 10.50.20.2
AP REBOOTS
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26 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
HA: AP Fast Failover
GRE STANDBY GRE
ACTIVE
AOS 6.3+
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27 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
HA: AP Fast Failover
GRE ACTIVE
AOS 6.3+
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28 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
AP FF: Controller Roles
• DUAL: Primary for some APs, standby for others • ACTIVE: Controller does not terminate standby
tunnels for other controllers • STANDBY: Controller only terminates standby
tunnels
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29 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
AP FF: N+1 Oversubscription
Controller Platform Ratio Max GRE tunnels 7000-series (70-05/10/24/30) 1:1 --
7210 4:1 16K 7220 4:1 32K 7240 4:1 64K M3 & 3600 2:1 16K
AOS 6.4+
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Licensing
• Per-AP – AP – Policy Enforcement Firewall (PEF) – RFProtect
• Per-Controller – Policy Enforcement Firewall VPN (PEFV) • For traffic entering through a VPN tunnel • Required for VIA
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Remote AP (RAP)
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32 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
Remote AP (RAP)
• Purpose-built RAPs and campus APs • Certificate-based provisioning • Secure wired and wireless remote access • RAPs are Instant out of the box • Aruba Activate
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Remote AP
INTERNET
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34 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
IPSEC TUNNEL
Remote AP - Logical
INTERNET
rap.arubanetworks.com
MAC-ETH0 24:DE:C6:CB:4A:F0 SERIAL BZ0030536
PROVISIONING TYPE IAP TO RAP
AP GROUP Boston-RAP
CONTROLLER rap.arubanetworks.com
24:DE:C6:CB:4A:F0 | BZ0030536
ACTIVATE
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RAP Forwarding Modes
• Tunnel • Bridge • Decrypt-tunnel • Split-tunnel
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Split-tunnel
• Tunnels certain traffic back to controller via IPSec tunnel (defined in user roles)
• Allows non-corporate traffic to be bridged out locally saving bandwidth.
• RAP handles encryption, decryption and firewall enforcement locally
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Transition Content
Limitations
• Roaming • ARM features • Requires controller licenses • Limited visibility
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Aruba Instant Architecture
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Aruba Instant Overview
• AP model begins with the letter I – IAP-225, IAP-215, IAP-205, etc
• Instant APs can be converted to controller-based APs
• No feature licensing with local management • Manage locally, via AirWave, or Aruba Central
(cloud) • Dynamic provisioning via Aruba Activate (free)
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CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved. 40 #ATM15ANZ | @ArubaANZ
Aruba Instant Overview - Technical
• Cooperate locally at L2 • Multiple uplink options (Ethernet, 4G/LTE, WiFi) • ARM, ClientMatch, AppRF, AirGroup, L3 Mobility • IAP-VPN for distributed environments
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Instant topology
INTERNET
VC
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Transition Content
Instant traffic flow
• Traffic destined for tunnels goes through VC • NAT’d traffic (guest) goes through VC • Regular user traffic firewalled, processed and
switched out at AP
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Instant traffic flow
INTERNET
VC [10] 20,30 [10] 20,30
VC IP: 172.16.10.5 AP IP: 172.16.10.10 AP IP: 172.16.10.11
Client IP: 172.16.20.10 www.google.com
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Instant traffic flow – Guest/NAT
INTERNET
VC [10] 20,30 [10] 20,30
VC IP: 172.16.10.5 AP IP: 172.16.10.10 AP IP: 172.16.10.11
Client IP: 172.31.98.42
Internal IAP Guest Network “Magic VLAN” 3333
172.31.98.x Src-NAT’d with VC address www.google.com
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IAP-VPN
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46 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
IAP-VPN Topology
Master active
Master backup
Master active
Master backup
Site 1
VC
Site 2
VC
Site 3
VC
INTERNET
Datacenter 1 Datacenter 2
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Transition Content
Benefits
• Local RF coordination • Roaming • Isolated broadcast domains for each cluster • Authentication survivability
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DHCP modes
• Local • Centralized L2 • Distributed L2 • Centralized L3 • Distributed L3
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Transition Content
DHCP modes
DHCP MODE SUBNET DHCP CLIENT GW CORP TRAFFIC LCL/INTERNET
Local Local Master AP Master AP Src-NAT IPSec tunnel
Src-NAT Master AP IP
Centralized L2 CORP Datacenter Datacenter Tagged & switched to datacenter via tunnel
Src-NAT Master AP IP
Distributed L2 CORP Master AP Datacenter Tagged & switched to datacenter via tunnel
Src-NAT Master AP IP
Centralized L3 CORP Datacenter Master AP Routed to datacenter inside IPSec tunnel
Src-NAT Master AP IP
Distributed L3 CORP Master AP Master AP Routed to datacenter inside IPSec tunnel
Src-NAT Master AP IP
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50 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
IAP-VPN licensing
• For basic VPN connectivity (single role), a single PEFNG license is required
• To use different roles for individual IAP clusters, the PEFV license is required for each controller
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Aruba Activate
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Transition Content
Aruba Activate
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Transition Content
Aruba Activate
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MANAGEMENT
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Aruba Central
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56 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
Aruba Central Overview
• Cloud management for Instant and MAS • ZTP with Aruba Activate • Firmware management • Reporting • Responsive UI (adaptive to any display) • AppRF management and visibility • Cloud captive portal w/ social
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Aruba Central
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Aruba Central
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Aruba Central
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Aruba Central
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AirWave
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62 #ATM15ANZ | @ ArubaANZ CONFIDENTIAL © Copyright 2015. Aruba, a Hewlett Packard Enterprise company. All rights reserved.
Transition Content
AirWave Overview
• On-premise solution (VM or physical) • Management, monitoring and reporting of Aruba
controllers, Instant clusters, and MAS • Multi-vendor • In a hybrid controller-Instant environment,
AirWave recommended • Single pane of glass
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Transition Content
Single pane of glass
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Transition Content
Instant GUI config
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Discussion & Questions
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Transition Content
arubanetworks.com/vrd
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Transition Content
Other resources
In-depth Wireless Architecture cwnp.com
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THANK YOU
#ATM15ANZ | @ArubaANZ
THANK YOU