Several Small and large Cisco ISR Router Platform Overview. Primary network connectivity was established via a public internet connection with a DMVPN (Dynamic Multipoint Virtual Private Network) encrypted link to corporate headquarters.

1. Small Branch Office Cisco
ISR 1941W Platform

2. Powerful Cisco ISR 1941W Review
• To simulate a small branch office, the Cisco ISR 1941W was
configured as a branch router serving a dozen employees. Primary
network connectivity was established via a public internet
connection with a DMVPN (Dynamic Multipoint Virtual Private
Network) encrypted link to corporate headquarters. A 3G wireless
data connection was setup for branch redundancy in the event of a
primary WAN link failure. The CISCO1941/K9 was also configured to
support wireless utilizing 802.11n radio to extend the corporate
wireless network into the branch office as well as provide guest
network connectivity for visitors to the office. Security features–
Zone Based Firewall, Cisco IOS IPS and content filtering were
activated. The Voice services were provided by a headquartersbased CUCM (Cisco Unified Communications Manager).

4. Medium Branch Office Cisco ISR 2911
Platform
• A medium branch office deployment was simulated using a Cisco
ISR 2911. This branch scenario supports about 25 users. Primary
and backup network connections were to be provided by two
separate Ethernet WAN links. An IP WAN provided primary network
connectivity with a DMVPN secure connection serving as backup to
corporate headquarters. Security features–Zone Based Firewall,
Cisco IOS IPS were activated. Voice services were provided by a
headquarters-based CUCM with local POTS (Plain Old Telephone
Service) access from the CISCO2911/K9 . Cisco Unified SRST
(Survivable Remote Site Telephony) was supported to provide
redundant local call control in the branch offices in the event the
central CUCM is unreachable. Telepresence and video are also
supported and enabled for this deployment.

5. Large Branch Office Cisco ISR 2951
Platform
• A large branch with 40 to 60 users was created using a
Cisco ISR 2951. In this scenario, the 2951 was configured to
provide both primary and backup corporate access via an IP
WAN connection as the primary connection to the
headquarters and a public Internet connection with a
DMVPN secure connection acting as backup. In this
scenario the Cisco 2951 was configured to support all voice
functions including Cisco Unified Communications Manager
Express (CUCME) for call control and voice-mail with Cisco
Unity Express. Local PSTN access is provided by a SIP trunk
from the 2951 to the local phone network. Zone Based
Firewall, Cisco IOS IPS and Cisco WAAS were also activated
in the router.

7. Regional Branch Office Cisco ISR 3945
Platform
• A large regional office with 150 or more employees
was simulated with a Cisco 3945 . Primary and backup
connectivity to the headquarters was provided with
redundant IP WAN connections. The 3945 was
configured to support CUBE (Cisco Unified Border
Element) functionality for call control in conjunction
with a CUCM at corporate headquarters. SRST
functionality was also enabled at the 3945 router in the
event that connectivity with the central CUCM is lost.
Local PSTN access was provided by a SIP trunk to the
local telephone network. Zone Based Firewall, Cisco
IOS IPS and Cisco WAAS were also activated in the
router.

8. • More Information, you can visit
http://www.router-switch.com/ to know
much Cisco products.