Module 7: Implementing Routing Facilities for Branch Offices and Mobile Workers pptx

© 2010 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialROUTE 1 ROUTE Module 7: Implementing Routing Facilities for Branch Offices and Mobile Workers © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 2 CCNP – ROUTE Bachkhoa Networking Academy Objectives  Describe Cisco Enterprise remote connection options.  Identify common access and service options for Teleworkers.  Describe the Teleworker solution components.  Compare traditional versus business ready Teleworker requirements. Học viện CNTT Bách Khoa - www.bkacad.com © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 3 CCNP – ROUTE Bachkhoa Networking Academy Cisco Enterprise Architecture Remote Connection Options Topologies Học viện CNTT Bách Khoa - www.bkacad.com Companies require secure, reliable, and cost-effective Protection Lower cost of operations Growth 3 goals: © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 4 CCNP – ROUTE Bachkhoa Networking Academy Cisco Enterprise Architecture Remote Connection Options Học viện CNTT Bách Khoa - www.bkacad.com 3 options © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 5 CCNP – ROUTE Bachkhoa Networking Academy Branch Office Connectivity  Many options exist today for private connectivity between an Enterprise branch office and the core of an Enterprise network. Leased lines Frame Relay MPLS VPNs Metro Ethernet  Several public options exist for branch office connectivity: Digital subscriber line (DSL) Cable wireless broadband Học viện CNTT Bách Khoa - www.bkacad.com © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 6 CCNP – ROUTE Bachkhoa Networking Academy Branch Office Connectivity  The branch routing for the Internet-connected branch differs in part depending on the design:  Small Branch Office Design: A small branch office typically leverages an ISR router to provide multiple services such as WAN and PSTN connectivity, NAT, WAN optimization, firewall, and DHCP.  Its WAN connectivity might be a T1 primary link with a cable or DSL backup link using an IPsec VPN.  You might run a routing protocol or simply use floating static routes Học viện CNTT Bách Khoa - www.bkacad.com © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 7 CCNP – ROUTE Bachkhoa Networking Academy Branch Office Connectivity  Medium Branch Office Design: A medium-sized branch office requires some additional resiliency and network equipment. There typically are redundant WAN routers with dual connections to a private WAN using either MPLS or Frame Relay.  The routers will be higher capacity devices but might still provide services such as firewall, NAT, DHCP, and WAN optimization  The network might use a FHP such as HSRP Học viện CNTT Bách Khoa - www.bkacad.com © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 8 CCNP – ROUTE Bachkhoa Networking Academy Branch Office Connectivity  Large Branch Office Design: A large branch office is similar to a campus design in that it typically uses a layered design with redundancy at all but the access layer.  Stand-alone devices for firewalls and WAN optimization might be used, along with multilayer switches. This branch can provide services to other branches and can thus benefit from an MPLS WAN with its any-to-any connectivity.  The infrastructure is engineered for high availability. It typically consists of dual WAN access routers, dual distribution switches, and dual firewalls. Học viện CNTT Bách Khoa - www.bkacad.com © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 9 CCNP – ROUTE Bachkhoa Networking Academy Branch Office Connectivity Học viện CNTT Bách Khoa - www.bkacad.com © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 10 CCNP – ROUTE Bachkhoa Networking Academy The Teleworker Solution  Secure central site for equal access to applications and services  Centrally managed  Continuity of operations  Increased responsiveness across boundaries  Secure, reliable, and manageable employee access  Applications extended over one common network connection  Increased employee productivity, satisfaction, and retention  IPsec VPN - Quick and cost-effective to deploy Học viện CNTT Bách Khoa - www.bkacad.com [...]... which to connect an increasing number of teleworkers working in small offices/ home offices (SOHOs) and other remote locations  The enterprise teleworker broadband solution delivers an always-on, secure voice and data service to remote small or home offices creating a flexible work environment  Infrastructure services options for Teleworkers include: IPsec VPN Security Authentication Quality of Service... www.bkacad.com 28 CCNP – ROUTE Bachkhoa Networking Academy ADSL—Data and Voice on the Same Wire  ADSL coexists with POTS over the same copper wiring  Asymmetric data rates: High-speed downstream for intensive applications: ADSL 8 Mbps for 18,000 feet ADSL2 12 Mbps for 8000 feet ADSL2+ 24 Mbps for 5,000 feet Slower (1 Mbps) upstream for undemanding data requests ROUTE © 2010 Cisco Systems, Inc All rights... be cancelled, thus causing the attenuation across the voice band to be equal – same for both low and high frequencies –Recommended spacing would be at intervals of 6000 ft., with the first coil place 3,000 ft from the start of the cable run –This wire creates a low-frequency band pass filter and cuts off, or blocks, the DSL frequencies For the DSL to operate, load coils must be removed from the loop... splitter  ADSL operation and performance are influenced by different impairments ROUTE © 2010 Cisco Systems, Inc All rights reserved Học viện CNTT Bách Khoa - www.bkacad.com 30 CCNP – ROUTE Bachkhoa Networking Academy Separating ADSL and POTS with Microfilters and a CO Splitter  A key feature of ADSL is coexistence with POTS  Transmission of voice and data signals is performed on the same wire pair... variants of DSL and factors effecting their performance  Identify DSL distance limitations ROUTE © 2010 Cisco Systems, Inc All rights reserved Học viện CNTT Bách Khoa - www.bkacad.com 14 CCNP – ROUTE Bachkhoa Networking Academy What Is a DSL?  Uses high transmission frequencies (up to 1 MHz)  Technology for delivering high bandwidth over regular copper lines  Connection between subscriber and CO Modem... Bách Khoa - www.bkacad.com 16 CCNP – ROUTE Bachkhoa Networking Academy How Does DSL Work?  Downstream and upstream transmission  Symmetrical and asymmetrical services  Multiple xDSL variations  Delivers data and voice signals simultaneously and transparently  Provides an always-on data connection  Bandwidth varies with distance ROUTE © 2010 Cisco Systems, Inc All rights reserved Học viện CNTT Bách... ROUTE Bachkhoa Networking Academy Objectives  Describe the operation and characteristics of ADSL  Identify the methods used to separate ADSL and POTS signals  Describe ADSL modulation techniques  Describe three ways to encapsulate IP packets over an ATM and DSL connection  Describe PPPoE and PPPoA deployment options  Describe PPPoE and PPPoA session establishment ROUTE © 2010 Cisco Systems, Inc All... DSL Performance  Factors that define maximum distance and speed: –Signal attenuation –Bridge tap is an extra telephone wire with an un-terminated cable end connected to the local loop –Load coil is a wrap of wire placed at specific intervals along the local loop that extends the local loop distance This wire creates a low-frequency band pass filter and cuts off, or blocks, the DSL frequencies For the... sort of like having an additional half-mile antenna picking up all the garbage in the air and feeding it to your telephone equipment –Such an un-terminated tap can cause noise and reflections and can radiate power that reduces signal strength and, consequently speed –DSL providers should remove bridge taps before installing a DSL ROUTE © 2010 Cisco Systems, Inc All rights reserved Học viện CNTT Bách... Requirements Traditional Level of accessibility to applications and services Basic Full Advanced application support (voice and video) No Yes QoS No (best effort) Yes (full range of QoS services) Security Not adequate (relies on end user) Controlled and remotely pushed by IT Remote configuration and management ROUTE Business-Ready No (user has control) Yes (IT driven) © 2010 Cisco Systems, Inc All rights reserved . Inc. All rights reserved. Cisco ConfidentialROUTE 1 ROUTE Module 7: Implementing Routing Facilities for Branch Offices and Mobile Workers © 2010 Cisco Systems, Inc. All rights reserved. ROUTE 2 CCNP. Networking Academy Branch Office Connectivity  The branch routing for the Internet-connected branch differs in part depending on the design:  Small Branch Office Design: A small branch office. access layer.  Stand-alone devices for firewalls and WAN optimization might be used, along with multilayer switches. This branch can provide services to other branches and can thus benefit