23
Jul/10

RIP and OSPF Redistribution

by admin under Cisco Configuration, Cisco Tech, Official Config

RIP and OSPF Redistribution

This case study addresses the issue of integrating Routing Information Protocol (RIP) networks with Open Shortest Path First (OSPF) networks. Most OSPF networks also use RIP to communicate with hosts or to communicate with portions of the internetwork that do not use OSPF. Cisco supports both the RIP and OSPF protocols and provides a way to exchange routing information between RIP and OSPF networks. This case study provides examples of how to complete the following phases in redistributing information between RIP and OSPF networks, including the following topics:

  • Configuring a RIP Network
  • Adding OSPF to the Center of a RIP Network
  • Adding OSPF Areas
  • Setting Up Mutual Redistribution

Configuring a RIP Network

Figure 14-1 illustrates a RIP network. Three sites are connected with serial lines. The RIP network uses a Class B address and an 8-bit subnet mask. Each site has a contiguous set of network numbers.

Figure 14-1: A RIP network.


Table 14-1 lists the network address assignments for the RIP network, including the network number, subnet range, and subnet masks. All interfaces indicate network 130.10.0.0; however, the specific address includes the subnet and subnet mask. For example, serial interface 0 on Router C has an IP address of 130.10.63.3 with a subnet mask of 255.255.255.0.

Table 14-1: RIP Network Address Assignments

Network Number Subnets Subnet Masks
130.10.0.0 Site A: 8 through 15 255.255.255.0
130.10.0.0 Site B: 16 through 23 255.255.255.0
130.10.0.0 Site C: 24 through 31 255.255.255.0
130.10.0.0 Serial Backbone: 62 through 64 255.255.255.0
Configuration File Examples

The following commands in the configuration file for Router A determine the IP address for each interface and enable RIP on those interfaces:
interface serial 0
ip address 130.10.62.1 255.255.255.0
interface serial 1
ip address 130.10.63.1 255.255.255.0
interface ethernet 0
ip address 130.10.8.1 255.255.255.0
interface tokenring 0
ip address 130.10.9.1 255.255.255.0
router rip
network 130.10.0.0

The following commands in the configuration file for Router B determine the IP address for each interface and enable RIP on those interfaces:
interface serial 0
ip address 130.10.62.2 255.255.255.0
interface serial 1
ip address 130.10.64.2 255.255.255.0
interface ethernet 0
ip address 130.10.17.2 255.255.255.0
interface tokenring 0
ip address 130.10.16.2 255.255.255.0
router rip
network 130.10.0.0

The following commands in the configuration file for Router C determine the IP address for each interface and enable RIP on those interfaces:
interface serial 0
ip address 130.10.63.3 255.255.255.0
interface serial 1
ip address 130.10.64.3 255.255.255.0
interface ethernet 0
ip address 130.10.24.3 255.255.255.0
router rip
network 130.10.0.0

Adding OSPF to the Center of a RIP Network

A common first step in converting a RIP network to OSPF is to add backbone routers that run both RIP and OSPF, while the remaining network devices run RIP. These backbone routers are OSPF autonomous system boundary routers. Each autonomous system boundary router controls the flow of routing information between OSPF and RIP. In Figure 14-2, Router A is configured as the autonomous system boundary router.

Figure 14-2: RIP network with OSPF at the center.

RIP does not need to run between the backbone routers; therefore, RIP is suppressed on Router A with the following commands:

router rip
passive-interface serial 0
passive-interface serial 1

The RIP routes are redistributed into OSPF by all three routers with the following commands:
router ospf 109
redistribute rip subnets
The subnets keyword tells OSPF to redistribute all subnet routes. Without the subnets keyword, only networks that are not subnetted will be redistributed by OSPF. Redistributed routes appear as external type 2 routes in OSPF. Each RIP domain receives information about networks in other RIP domains and in the OSPF backbone area from the following commands that redistribute OSPF routes into RIP:
router rip
redistribute ospf 109 match internal external 1 external 2
default-metric 10
The redistribute command uses the ospf keyword to specify that OSPF routes are to be redistributed into RIP. The keyword internal indicates the OSPF intra-area and interarea routes: External 1 is the external route type 1, and external 2 is the external route type 2. Because the command in the example uses the default behavior, these keywords may not appear when you use the write terminal or show configuration commands.

Because metrics for different protocols cannot be directly compared, you must specify the default metric in order to designate the cost of the redistributed route used in RIP updates. All routes that are redistributed will use the default metric.

In Figure 14-2, there are no paths directly connecting the RIP clouds. However, in typical networks, these paths, or “back doors,” frequently exist, allowing the potential for feedback loops. You can use access lists to determine the routes that are advertised and accepted by each router. For example, access list 11 in the configuration file for Router A allows OSPF to redistribute information learned from RIP only for networks 130.10.8.0 through 130.10.15.0:
router ospf 109
redistribute rip subnet
distribute-list 11 out rip
access-list 11 permit 130.10.8.0 0.0.7.255
access-list 11 deny 0.0.0.0 255.255.255.255

These commands prevent Router A from advertising networks in other RIP domains onto the OSPF backbone, thereby preventing other boundary routers from using false information and forming a loop.

Configuration File Examples

The full configuration for Router A follows:
interface serial 0
ip address 130.10.62.1 255.255.255.0
interface serial 1
ip address 130.10.63.1 255.255.255.0
interface ethernet 0
ip address 130.10.8.1 255.255.255.0
interface tokenring 0
ip address 130.10.9.1 255.255.255.0
!
router rip
default-metric 10
network 130.10.0.0
passive-interface serial 0
passive-interface serial 1
redistribute ospf 109 match internal external 1 external 2
!
router ospf 109
network 130.10.62.0 0.0.0.255 area 0
network 130.10.63.0 0.0.0.255 area 0
redistribute rip subnets
distribute-list 11 out rip
!
access-list 11 permit 130.10.8.0 0.0.7.255
access-list 11 deny 0.0.0.0 255.255.255.255

The full configuration for Router B follows:
interface serial 0
ip address 130.10.62.2 255.255.255.0
interface serial 1
ip address 130.10.64.2 255.255.255.0
interface ethernet 0
ip address 130.10.17.2 255.255.255.0
interface tokenring 0
ip address 130.10.16.2 255.255.255.0
!
router rip
default-metric 10
network 130.10.0.0
passive-interface serial 0
passive-interface serial 1
redistribute ospf 109 match internal external 1 external 2
!
router ospf 109
network 130.10.62.0 0.0.0.255 area 0
network 130.10.64.0 0.0.0.255 area 0
redistribute rip subnets
distribute-list 11 out rip
access-list 11 permit 130.10.16.0 0.0.7.255
access-list 11 deny 0.0.0.0 255.255.255.255

The full configuration for Router C follows:
interface serial 0
ip address 130.10.63.3 255.255.255.0
interface serial 1
ip address 130.10.64.3 255.255.255.0
interface ethernet 0
ip address 130.10.24.3 255.255.255.0
!
router rip
default-metric 10
!
network 130.10.0.0
passive-interface serial 0
passive-interface serial 1
redistribute ospf 109 match internal external 1 external 2
!
router ospf 109
network 130.10.63.0 0.0.0.255 area 0
network 130.10.64.0 0.0.0.255 area 0
redistribute rip subnets
distribute-list 11 out rip
access-list 11 permit 130.10.24.0 0.0.7.255
access-list 11 deny 0.0.0.0 255.255.255.255

Adding OSPF Areas

Figure 14-3 illustrates how each of the RIP clouds can be converted into an OSPF area. All three routers are area border routers. Area border routers control network information distribution between OSPF areas and the OSPF backbone. Each router keeps a detailed record of the topology of its area and receives summarized information from the other area border routers on their respective areas.

Figure 14-3: Configuring route summarization between OSPF areas.

Figure 14-3 also illustrates variable-length subnet masks (VLSMs). VLSMs use different size network masks in different parts of the network for the same network number. VLSM conserves address space by using a longer mask in portions of the network that have fewer hosts. Table 14-2 lists the network address assignments for the network, including the network number, subnet range, and subnet masks. All interfaces indicate network 130.10.0.0.
Table 14-2: OSPF Address Assignments

Network Number Subnets Subnet Masks
130.10.0.0 Area 0: 62 through 64 255.255.255.248
130.10.0.0 Area 1: 8 through 15 255.255.255.0
130.10.0.0 Area 2: 16 through 23 255.255.255.0
130.10.0.0 Area 3: 24 through 31 255.255.255.0

To conserve address space, a mask of 255.255.255.248 is used for all the serial lines in area 0. If an area contains a contiguous range of network numbers, an area border router uses the range keyword with the area command to summarize the routes that are injected into the backbone:
router ospf 109
network 130.10.8.0 0.0.7.255 area 1
area 1 range 130.10.8.0 255.255.248.0

These commands allow Router A to advertise one route, 130.10.8.0 255.255.248.0, which covers all subnets in Area 1 into Area 0. Without the range keyword in the area command, Router A would advertise each subnet individually; for example, one route for 130.10.8.0 255.255.255.0, one route for 130.10.9.0 255.255.255.0, and so forth.

Because Router A no longer needs to redistribute RIP routes, the router rip command can now be removed from the configuration file; however, it is common in some environments for hosts to use RIP to discover routers. When RIP is removed from the routers, the hosts must use an alternative technique to find the routers. Cisco routers support the following alternatives to RIP:

  • ICMP Router Discovery Protocol (IRDP)—This technique is illustrated in the example at the end of this section. IRDP is the recommended method for discovering routers. The ip irdp command enables IRDP on the router. Hosts must also run IRDP.
  • Proxy Address Resolution Protocol (ARP)—If the router receives an ARP request for a host that is not on the same network as the ARP request sender, and if the router has the best route to that host, the router sends an ARP reply packet giving the router’s own local data link address. The host that sent the ARP request then sends its packets to the router, which forwards them to the intended host. Proxy ARP is enabled on routers by default. Proxy ARP is transparent to hosts.
Configuration File Examples

The full configuration for Router A follows:
interface serial 0
ip address 130.10.62.1 255.255.255.248
interface serial 1
ip address 130.10.63.1 255.255.255.248
interface ethernet 0
ip address 130.10.8.1 255.255.255.0
ip irdp
interface tokenring 0
ip address 130.10.9.1 255.255.255.0
ip irdp
router ospf 109
network 130.10.62.0 0.0.0.255 area 0
network 130.10.63.0 0.0.0.255 area 0
network 130.10.8.0 0.0.7.255 area 1
area 1 range 130.10.8.0 255.255.248.0

The full configuration for Router B follows:
interface serial 0
ip address 130.10.62.2 255.255.255.248
interface serial 1
ip address 130.10.64.2 255.255.255.248
interface ethernet 0
ip address 130.10.17.2 255.255.255.0
ip irdp
interface tokenring 0
ip address 130.10.16.2 255.255.255.0
ip irdp
router ospf 109
network 130.10.62.0 0.0.0.255 area 0
network 130.10.64.0 0.0.0.255 area 0
network 130.10.16.0 0.0.7.255 area 2
area 2 range 130.10.16.0 255.255.248.0

The full configuration for Router C follows:
nterface serial 0
ip address 130.10.63.2 255.255.255.248
interface serial 1
ip address 130.10.64.2 255.255.255.248
interface ethernet 0
ip address 130.10.24.3 255.255.255.0
ip irdp
router ospf 109
network 130.10.63.0 0.0.0.255 area 0
network 130.10.64.0 0.0.0.255 area 0
network 130.10.24.0 0.0.0.255 area 3
area 3 range 130.10.24.0 255.255.248.0

Setting Up Mutual Redistribution

It is sometimes necessary to accommodate more complex network topologies such as independent RIP and OSPF clouds that must perform mutual redistribution. In this scenario, it is critically important to prevent potential routing loops by filtering routes. The router in Figure 14-4 is running both OSPF and RIP.

Figure 14-4: Mutual redistribution between RIP and OSPF networks.

With the following commands, OSPF routes will be redistributed into RIP. You must specify the default metric to designate the cost of the redistributed route in RIP updates. All routes redistributed into RIP will have this default metric.

! passive interface subcommand from previous example is left out for clarity!
router rip
default-metric 10
network 130.10.0.0
redistribute ospf 109

It is a good practice to strictly control which routes are advertised when redistribution is configured. In the following example, a distribute-list out command causes RIP to ignore routes coming from the OSPF that originated from the RIP domain.
router rip
distribute-list 10 out ospf 109
!
access-list 10 deny 130.10.8.0 0.0.7.255
access-list 10 permit 0.0.0.0 255.255.255.255

Router A

The full configuration for the router follows:
interface serial 0
ip add 130.10.62.1 255.255.255.0
!
interface serial 1
ip add 130.10.63.1 255.255.255.0
!
interface ethernet 0
ip add 130.10.8.1 255.255.255.0
!
interface tokenring 0
ip add 130.10.9.1 255.255.255.0
!
router rip
default-metric 10
network 130.10.0.0
passive-interface serial 0
passive-interface serial 1
redistribute ospf 109
distribute-list 10 out ospf 109
!
router ospf 109
network 130.10.62.0 0.0.0.255 area 0
network 130.10.63.0 0.0.0.255 area 0
redistribute rip subnets
distribute-list 11 out rip
!
access-list 10 deny 130.10.8.0 0.0.7.255
access-list 10 permit 0.0.0.0 255.255.255.255
access-list 11 permit 130.10.8.0 0.0.7.255
access-list 11 deny 0.0.0.0 255.255.255.255

Summary

Because it is common for OSPF and RIP to be used together, it is important to use the practices described here in order to provide functionality for both protocols on an internetwork. You can configure autonomous system boundary routers that run both RIP and OSPF and redistribute RIP routes into the OSPF and vice versa. You can also create OSPF areas using area border routers that provide route summarizations. Use VLSM to conserve address space.

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1
Jul/10

Catalyst 2948G-L3 and Catalyst 4908G-L3 of thec

by admin under Official Config

Introduction

This article provides since Cisco IOS ® Software version 12.0 (10) W5 (18e) Since the Catalyst 2948G-L3 and Catalyst 4908G-L3 bridge group virtual interfaces (BVI) enhancement of information overflow.
Hardware and software version

This information based on the following hardware and software versions:

* Cisco IOS software version 12.0 (10) W5 (18e) and later
* Catalyst 2948G-L3 and Catalyst 4908G-L3

Problem description

In some cases, the Catalyst 2948G-L3 and 4908G-L3 configure integrated routing and bridging (IRB), channel routing may be CPU, not the hardware (microcode) in the implementation.

The conditions described below, when the business reaches a certain Layer 3 routing interface, and the goal is to L3 switch on the BVI interface to reach a host (router), the CPU running in the Cisco IOS code to intercept incoming packets , and then routed to the BVI interfaces.

Cisco IOS do not know if the data packet to be served on members of the actual output of the bridge group interface (MAC address of the bridge by consulting the table), then spread to the bridge group packets to all interfaces. Assuming the case of IP, Address Resolution Protocol (ARP) enter the full.

All this activity occurs in the process-level code, so when entering a high volume of business when, CPU will use warning level. High utilization can cause system instability CUP, and wide-ranging side effects.

Condition

Trigger business conditions sent to the CPU when the bridge group associated with the MAC address of the host fade out when the bridge table. This will cause the host layer 3 (IP / IPX) adjacent void.

This information will be transmitted to all third level content addressable memory (CAM) (all routed ports). This is because at this time is no guarantee that the adjacent information layer 2 MAC.

If this happens, any point behind the host routing BVI received on port business will be sent to the CUP. CPU running in the Cisco IOS routing code will be the third layer, the business sent to the BVI interfaces.

Then, it will be the bridge table lookup to find out the purpose of the business interface, it will spread to businesses of all members of the bridge group. Therefore, the throughput will be substantially reduced, and CPU utilization will increase.
Solutions

Reduce the CPU on these cases, the solution adopted by the load concentrated in the Catalyst 2948G-L3 and Catalyst 4908G-L3 for Cisco IOS 12.0 (10) W5 (18e) and the updated version. Diffusion is executed in hardware (microcode), but not by the CPU is running in the Cisco IOS process level code levels.

Therefore, from the Cisco IOS software version 12.0 (10) W5 (18e), and once the adjacent layer 3 become invalid, then the micro-code will be sent to the back of the host BVI business spread to all the members of the bridge group, which from divert part of the load on the CPU. Please note that IP is, if you want to achieve in the micro-code overflow, ARP must be complete.

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1
Jul/10

Cisco Aironet 1310G Wireless Access Point/Bridge(AIR-BR1310G-A-K9-R)

by admin under Cisco Routers, Routers

The Cisco Aironet 1300 Outdoor Access Point/Bridge is an 802.11g access point and bridge that provides high-speed and cost-effective wireless connectivity between multiple fixed or mobile networks and clients. Building a metropolitan-area wireless infrastructure with the Cisco Aironet 1300 Series provides deployment personnel with a flexible, easy-to-use solution that meets the security requirements of wide-area networking professionals.

  • This version has Two RP-TNC type connectors for external antennas
  • F connectors for Dual coaxial cable carries full-duplex Ethernet, DC power, and full-duplex console port (RS-232 connection).The Cisco Aironet 1300 Series supports the 802.11g standard??providing 54-Mbps data rates with a proven, secure technology while maintaining full backward compatibility with legacy 802.11b devices. Cisco Systems makes the maintenance and installation of the Cisco Aironet 1300 Series easy by integrating it with your wired network via the Cisco Structured Wireless-Area Network (SWAN) solution. Based on Cisco IOS Software, the Cisco Aironet 1300 Series provides advanced features such as Fast Secure Roaming, quality of service (QoS), and VLANs.

    The flexibility of the Cisco Aironet 1300 Series allows it to operate as a wireless bridge, access point, or a workgroup bridge.

    Engineered specifically for harsh outdoor environments, yet also capable in indoor deployments, the Cisco Aironet 1300 is ideal for wireless LANs (WLANs) requiring external access points. The Cisco Aironet 1300 is WiFi-certified as an access point and also supports the innovative features available with Cisco Aironet and Cisco Compatible client devices.

    The Cisco Aironet 1300 supports either point-to-point or point-to-multipoint configuration to cost-effectively interconnect remote, temporary, or mobile networks. It can serve as an upgrade or replacement to the Cisco Aironet 350 Wireless Bridge by providing over-the-air compatibility with existing Cisco Aironet 350 Series wireless bridges. While in bridge mode, client associations are also accepted??effectively providing simultaneous bridge and access-point capability.

    As a workgroup bridge, the Cisco Aironet 1300 quickly connects any Ethernet-enabled device, such as a laptop or other portable computer, to a WLAN. By adding a standard Ethernet hub or switch, you can connect up to 255 of these devices to any Cisco Aironet access point or wireless bridge.

    The Cisco Aironet 1300 can provide an ongoing savings of leased-line expenses, a method to connect networks despite physical barriers such as lakes or highways, and rapid deployment of network connections??often while waiting on other facilities such as fiber-optic installations. Typical organizations that will benefit from the advantages of the Cisco Aironet 1300 Series include: education, enterprise, government, healthcare, military, public safety, transportation, and WLAN service providers. These organizations have a variety of possible applications that are discussed in the following paragraphs.

    Whether a typical college campus or corporate offices with multiple buildings, IT professionals are faced with interconnecting local area networks in each of the buildings. These LANs require cost-effective, high-bandwidth connections with the flexibility and control often not available via leased lines or cable installations requiring trenching.

    More and more, networks are “on the move.” Vehicles such as buses, trains, ambulances, and patrol cars are being equipped with their own LAN-supported devices such as notebooks, personal digital assistants (PDAs), cameras, and scanners. These mobile networks need to be interconnected to provide information-sharing for more informed decisions, improved public service and operational efficiency through more personnel time in the field, and new passenger services.

    The proliferation of WLAN hot spots has allowed users to stay connected while in hotels, airports, and even coffee shops. As more users desire ubiquitous connectivity, outdoor hot spots are being added??some of which include multiple city blocks or even town centers. These outdoor hot spots can be cost-effectively deployed with equipment designed for the outdoor environment.

    The variety of temporary solutions is limitless, with applications such as remote military campaigns, short-term office leases, temporary buildings such as trailers, or even parking lot tent sales. These deployments require a temporary network infrastructure that is rugged, portable, easy to install, and flexible

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    21
    Jun/10

    Cisco Aironet 1100 1121G Wireless Access Point(AIR-AP1121G-A-K9)

    by admin under Cisco Routers, Routers

    Aironet 1121 Wireless 802.11g Access Point with Integrated Antennas ( (Price Reflects $50 Instant Rebate good through 04/30/05)

    The Cisco Aironet 1100 Series Access Point provides a secure, affordable, and easy-to-use wireless LAN solution that combines mobility and flexibility with the enterprise-class features required by networking professionals. Taking advantage of the Cisco Wireless Security Suite for the strongest enterprise security available and of Cisco IOS Software for ease-of-use and familiarity, the Cisco Aironet 1100 Series Access Point delivers manageability, performance, investment protection, and scalability in a cost-effective package with a low total cost of ownership. The Cisco Aironet 1100 Series features a single, upgradeable 802.11b radio, integrated diversity dipole antennas, and an innovative mounting system for easy installation in a variety of locations and orientations.

    Aironet 1121 Wireless 802.11g Access Point with Integrated Antennas ( (Price Reflects $50 Instant Rebate good through 04/30/05)
    Specifications
    Device Type    Wireless access point
    RAM Installed ( Max )    16 MB
    Flash Memory Installed (Max)    8 MB flash
    Networking
    Form Factor    External
    Connectivity Technology    Wireless
    Data Transfer Rate    54 Mbps
    Line Coding Format    DBPSK, DQPSK, CCK, 64 QAM, BPSK, QPSK, 16 QAM
    Data Link Protocol    IEEE 802.11b, IEEE 802.11g
    Spread Spectrum Method    OFDM, DSSS
    Remote Management Protocol    SNMP, Telnet, HTTP
    Frequency Band    2.4 GHz
    Max Range Indoors    410 ft
    Max Range Open Space    2000 ft
    Selectable Channels Qty    11
    Status Indicators    Port status, error
    Features    DHCP support, BOOTP support, VLAN support, manageable
    Encryption Algorithm    RC4, AES, 128-bit WEP, 40-bit WEP, TKIP, WPA
    Authentication Method    RADIUS
    Compliant Standards    IEEE 802.3, IEEE 802.11b, IEEE 802.11g, IEEE 802.1x, IEEE 802.11i
    Antenna    Internal integrated
    Interfaces    1 x network – Radio-Ethernet ?? 1 x network – Ethernet 10Base-T/100Base-TX – RJ-45
    Compliant Standards    FCC Class B certified, EN 60950, ICES-003, UL 1950, IEC 60950, CSA 22.2 No. 950
    Power
    Power Device    Power adapter – external
    Voltage Required    AC 120/230 V ( 50/60 Hz )
    Dimensions and Weight
    Width    4.1 in
    Depth    1.5 in
    Height    8.1 in
    Weight    0.7 lbs

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    11
    Jun/10

    Cisco Aironet 802.11a/b/g Wireless PCI Adapter(AIR-PI21AG-A-K9)

    by admin under Cisco Routers, Routers

    The Cisco Aironet IEEE 802.11a/b/g Wireless PCI Adapter provides high-performance 54Mbps connectivity in the 2.4 and 5GHz bands. Whether configured to support single 802.11b coverage, single 802.11g coverage, single 802.11a coverage, dual-mode 802.11a/g coverage or tri-mode 802.11a/b/g coverage, the Cisco Aironet 802.11a/b/g Wireless PCI Adapter is Wi-Fi compliant and combines the freedom of wireless connectivity with the performance, security, and manageability that businesses require.

    The low-profile form factor and two-meter cable length provide significant flexibility for installation in low-profile devices, such as slim desktops and point-of-sale (POS) devices. For versatility, both a low profile and a standard profile bracket frame are included with the adapter. The attached dual-band 2.4/5GHz 2 dBi effective gain antenna has a two-meter cable allowing for optimal placement and maximum performance.

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    3
    Jun/10

    Cisco Aironet 4.5-dBi Low Profile Omnidirectional Antenna (AIR-ANT5145V-R=)

    by admin under Cisco Routers, Routers

    This document outlines the specifications, describes the AIR-ANT5160V-R 6-dBi omnidirectionalantenna, and provides instructions for mounting it. The antenna is a ruggedized high-performancecolinear antenna that operates in the 5-GHz frequency range and is designed for use in large rooms orvaulted areas where extended coverage is needed. The antenna is designed to be used indoors or outdoorsand can be mounted on a mast.To maximize the performance of your Cisco hardware, Cisco strongly recommends Cisco SMARTnet Support. SMARTnet provides you with technical support, access to essential information, and advanced hardware replacement. To learn more, call your account manager or 1-800-800-0014 today!This antenna is designed for use with Cisco Aironet access points and bridges but can be used with any 5-GHz Cisco Aironet radio device that utilizes a reverse polarity Neil Councilman (RP-TNC) connector.

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    25
    May/10

    AIR-ANT2422DG-R Cisco Aironet 2.4-GHz Dipole Antenna

    by admin under Cisco Routers, Routers

    The Cisco Aironet 1250 Antenna is the first enterprise-class access point to support the IEEE 802.11n draft 2.0 standard that provides the versatility, high capacity, and enterprise-class features demanded by wireless LAN customers. The Cisco Aironet 1250 Antenna is designed for challenging RF environments such as factories, warehouses, and large retail establishments.

    Specifications:
    • Antenna type: Dipole
    • Operating frequency range: 2402-2495 MHz
    • Nominal input impedance: 50
    • 2:l VSWR bandwidth: 2385 – 2515 Mhz
    • Peak gain: 2 dBi
    • Polarization: Linear, vertical
    • E-Plane 3-dB beamwidth: 70°
    • H-Plane 3-dB beamwidth: Omnidirectional
    • Dimensions: 5.5 in.
    • Weight: 1 oz.
    • Connector type: RP-TNC plug
    • Environment: Indoor
    • Operating temperature range: 32°F to 140°F (0°C to 60°C)
    • System Requirements: This antenna is compatible with any 2.4-GHz Cisco Aironet device with an RP-TNC plug.

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    17
    May/10

    Cisco Aironet Indoor 3.5dBi Articulated Dipole Antenna AIR ANT5135DW R

    by admin under Cisco Routers, Routers

    Fac: Cisco
    Part:AIR-ANT5135DW-R
    AIR-ANT5135DW-R Overview

    Cisco Aironet 3.5-dBi Articulated Dipole Antenna operates in the 5-GHz frequency band and is designed for use with Cisco Aironet 5-GHz radio products using a reverse-polarity Neil Councilman connector (RP-TNC). The antenna has an articulated base that can be rotated 360 degrees at the connection point and from 0 to 90 degrees at its knuckle with detents at 45 and 90 degrees.

    Specifications:

    Product Type: Antenna

    Width: 0.6 in

    Length: 5 in

    Antenna

    Directivity: Omni-directional

    Gain: 3.5 dBi

    Cabling & Wiring

    Connector Provided: 1 x RP-TNC

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    11
    May/10

    Cisco isco Accessory Kit f/ C184X

    by admin under Cisco Routers, Routers

    Manufacturer:    Cisco
    Part Number:    ACS-184X=

    Cisco is the worldwide leader in networking for the Internet. Cisco provides the broadest line of solutions for transporting data, voice and video within buildings, across campuses, or around the world. Cisco solutions ensure that networks both public and private operate with maximum performance, security, and flexibility.

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    5
    May/10

    Cisco CS-MARS GC2

    by admin under Cisco Routers, Routers

    More From: Cisco
    Item #: 7784602
    Mfr. Part#: CS-MARS-GC2-K9

    CS-MARS GC2 (Security Monitoring, Analysis and Response System) – CS-MARS-GC2-K9

    The Cisco Security Monitoring, Analysis and Response System (Cisco Security MARS) is an appliance based, all inclusive solution that provides unmatched insight and control of your existing security deployment. A key component of Cisco’s security management lifecycle, Cisco Security MARS empowers your security and network organizations to identify, manage, and counter security threats. It leverages your existing network and security investments to identify, isolate and recommends precision removal of offending elements. It also helps maintain internal policy compliance and can be an integral part of the overall regulatory compliance solution kit.

    This product is used for distributed monitoring of any number of all Local Controller models.

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