Cisco 2901 router review

The Cisco 2901 Integrated Services Router (ISR) delivers highly secure data, voice, video, and application services for small offices.

Cisco 2901 UC Bundle, PVDM3-16, UC License PAK.

Key features of Cisco 2900 router 2901 includes:

2 integrated 10/100/1000 Ethernet ports

4 enhanced high-speed WAN interface card slots

2 onboard digital signal processor (DSP) slots

1 onboard Internal Service Module for application services

Fully integrated power distribution to modules supporting 802.3af Power over Ethernet (PoE) and Cisco Enhanced PoE

Security

Embedded hardware-accelerated VPN encryption for secure collaborative VPN communications

Integrated threat control using Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco IOS Content Filtering

Identity management that uses authentication, authorization, and accounting (AAA) and public key infrastructure

Voice

High-density-packet voice DSP module, optimized for voice and video

Standards-certified VoiceXML browser services

Cisco Unified Border Element capabilities

Cisco Unity Express voicemail support

Support for Cisco Communications Manager Express and Survivable Remote Site Telephony

The Front and Back of the Cisco 2901 View:

Addition: Cisco2901-V/K9 datasheet

CISCO2901-V/K9 Specification and datasheet

Model	CISCO2901-V/K9
Description	Cisco 2901 Voice Bundle, PVDM3-16, UC License PAK
Embedded Hardware-Based Cryptography and Acceleration (IPSec + SSL)	Yes
Cisco Unified SRST Sessions	35
Cisco Unified CCME Sessions	35
Total Onboard WAN 10/100/1000 Ports	2
RJ-45-Based Ports	2
EHWIC Slots	4
Double-Wide EHWIC Slots	2
Onboard DSP (PVDM) Slots	2
Memory DDR2 ECC DRAM-Default	512 MB
Power-Supply Options	AC and PoE
Dimensions (H x W x D)	1.75 x 17.25 x 17.3 in. (44.5 x 438.2 x 439.4 mm)
Rack Height	1RU (rack unit)
	16 lb (7.3 kg) If you want to know more about the Cisco 2901 router datasheet and specification, please visit: http://www.3anetwork.com/cisco-cisco2901-v/k9-price_p245.html Also 52% off best price for Cisco 2901 on 3anetwork.com.

Catalyst 3750 SFP Transceiver

I am trying to figure which port is fiber sfp and which port is copper sfp. I have a 3750 WS-C3750X-48P-S.

...
Gi1/0/5                      connected    trunk      a-full a-1000 unsupported
Gi1/0/9                      connected    trunk      a-full a-1000 1000BaseSX SFP
Gi1/0/10                      connected   1          a-full a-1000 10/100/1000BaseTX SFP
Gi1/0/11                    connected    1          a-full a-1000 10/100/1000BaseTX SFP

I know that gig1/0/5 is a non-Cisco sfp sx transceiver
I am not sure about gig1/0/9-gig1/0/11. Is that a copper sfp transceiver? If yes, then is then an actual sfp transceiver in there?

The answer:
Gig1/0/9 is a fiber SX transceiver
Gig1/0/10 - 11 are copper transceivers

Yes they are actually there otherwise the ports would not show anything.
The more information of Cisco switch FAQ, please visit: http://cisco2960faq.blogspot.com/

How to connect Cisco 3750 with fiber?

What SFP module would you use to connect a 3750 switch WS-C3750X-48P-L to a 3550 that is using a WS-G5486 Gigabit module? Does anyone have experience with SX to LX adapters and if they are reliable?

The answer:

You would need to use a GLC-LH-SMD transceiver for this, and a LC-SC single-mode patch cord (if they're being connected directly without an intermediate patch-panel).

They are very reliable and are used for long links, well over the length that SX modules can go.

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Email:  info@3Anetwork.com

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How to make the Cisco VOIP settings for 1921 Router

We have a new VOIP phone install performed by ATT using Shoretel phones. We have a branch located across a 1.5MB T1 line with 1921's at each end.

As you can imagine, we are having some voice issues across the link and I need to get QoS set up between the two routers.

One of our techs has done this on an older router by defining ports using nbar and prioritizing that way.    I am not too knowledgable in Cisco routing and definately not in QoS, so please bear with me.

We ran the QoS wizard on the 1921 and got the following output:

Configuration commands for the router: 192.168.41.10

saved on Dec 9, 2011 2:53:44 PM

class-map match-any CCP-Transactional-1

class-map match-any CCP-Management-1

class-map match-any CCP-Routing-1

class-map match-any CCP-Signaling-1

class-map match-any CCP-Voice-1

policy-map CCP-QoS-Policy-1

 class CCP-Voice-1

  set dscp ef

  priority percent 50

  exit

 class CCP-Signaling-1

  set dscp cs3

  bandwidth percent 5

  exit

 class CCP-Routing-1

  set dscp cs6

  bandwidth percent 5

  exit

 class CCP-Management-1

  set dscp cs2

  bandwidth percent 5

  exit

 class CCP-Transactional-1

  set dscp af21

  bandwidth percent 5

  exit

 class class-default

  fair-queue

  random-detect

  exit

 exit

interface Serial0/0/0

 ip nbar protocol-discovery

 service-policy output CCP-QoS-Policy-1

 exit

Now, I assume I need to modify this section "class-map match-any CCP-Voice-1

" to define the ports that are used by the Shoretel system to prioritize that traffic between the routers.  I have researched and cannot find anything as to how to tell the router to priorotize specific port traffic.

Does anyone know the correct commands or structure to type? Or am I completely wrong in how this should be done? If so, can anyone point me in the right direction?

The solution

In the Shoretel Director set the Diffserv value to 184 (under Call Control -> Options)

In the Cisco device.... configure EVERY port (for director + all phones + all trunks) to

interface x/x

qos trust dscp

or

mls qos trust dscp

Create access list to map Shoretel ports

access-list 100 remark Shoretel VoIP

access-list 100 permit udp any any eq 2427

access-list 100 permit udp any any eq 2727

access-list 100 permit udp any any range 5440 5446

access-list 101 remark Shoretel Director

access-list 101 permit udp host IP_ADDRESS_OF_DIRECTOR gt 1024 any gt 1024

Add the match statements to the Voice Priority Queue created by wizard

class-map match-any CCP-Voice-1

 match ip dscp ef

 match access-group 100

 match access-group 101

You might consider bumping up the priority percent - based on the amount of concurrent calls/codecs in use/bandwidth required.

SHOW the output of the service policy to confirm

show policy int x/x

Should see tagged packets increasing in the queue - and hopefully no drop ;>

-d

Customers interested in purchasing Cisco router or the price, please refer to below links:

Cisco 1921 price

Cisco 1941 price

Cisco 2901 price

What’s the security license for Cisco 1900, 2900, and 3900

Security license for Cisco 1900, 2900(Cisco 2901 router), and Cisco 3900 router

Security License (Paper) for Cisco 1941:  SL-19-SEC-K9(=)

Security License (Paper) for Cisco 2901-2951: SL-29-SEC-K9(=)

Security License (Paper) for Cisco 3925/3945: SL-39-SEC-K9(=)

Security License (E-Delivery) for Cisco 1941:  L-SL-19-SEC-K9=

Security License (E-Delivery) for Cisco 2901-2951: L-SL-29-SEC-K9=

Security License (E-Delivery) for Cisco 3925/3945: L-SL-39-SEC-K9=

You can use the Cisco Network Access Control (NAC) Network Module, which adds the feature-rich Cisco NAC Appliance Server capabilities, with Cisco 2900 and 3900 Series Integrated Services Routers. The Cisco NAC Appliance (formerly Cisco Clean Access Server) is a rapidly deployable NAC product that allows network administrators to authenticate, authorize, evaluate, and remediate wired, wireless, and remote users and their machines prior to allowing users onto the network.

The integration of Cisco NAC Appliance Server capabilities into a network module for integrated services routers allows network administrators to manage a single device in a branch office for data, voice, and security requirements, reducing network complexity, IT staff training, equipment sparing requirements, and maintenance costs.

It is refered from

www.cisco.com/en/US/prod/collateral/routers/ps10538/data_sheet_c78-556151_ps10537_Products_Data_Sheet.html

How to solve the wrong duplex setting of Cisco Router 3900

We have a Cisco 3900, and our ISP told us that our config (below) has the wrong duplex setting. They want us to change it to 100 FULL.

1. What is the command to change the duplex to FULL (without restarting the router).

2. What if the link goes down, how do I revert back to the old settings (AUTO)?

interface GigabitEthernet0/0

 description Internet via $ETH-WAN$$FW_OUTSIDE$

 ip address 209.xx.xx.xx 255.255.255.252

 ip access-group 101 in

 no ip redirects

 no ip proxy-arp

 ip verify unicast reverse-path

 ip flow ingress

 duplex auto

 speed 100

 no mop enabled

The solution:

try

interface GigabitEthernet0/0

spped 100

duplex full

sh int gi 0/0  will show the current settings .

or just try:

show int --> shows half duplex.. did u apply the commands

regarding question number 2 ...  no need to restart .

just change the duplex to  auto ( duplex auto)

or

int gi 0/0

shut

no shut.

The other end could also just not be Cisco 3900 series router, sometimes disparate hardware requires that you force the GB connection to Full.

The standard is to set 1Gbps connections to auto, but when it first came out we often had to force it to get it to work with some hardware.

Sometimes when the duplex negotiation fails it will fall-back to half-duplex.  Therefore it's not correct to say that the other end is definitely set to half.  Negotiation could fail for a number of reasons, including manually specifying the speed.

The main reason ISPs specify manual speed and duplex settings is because they want to mitigate any chance of auto-negotiation failure which would result in half-duplex operation and therefore reduce support incidents.

The problem of Cisco router size - BGP routing table

Question: I'm looking for some guidance in sizing Cisco routers for different levels of BGP support.  I'm aware that it requires 1 GB of RAM to handle the full BGP routing table, but the processing required to maintain neighbors/sessions, etc., would be too much for a Cisco 1941 ISR, for example.  I'd like recommended solutions for the following scenarios:

1) A router that will be dual-homed to two different ISP's (same speed lnks - let's say 100-Mb each), and will be maintaining a full routing table to choose the best path based on BGP path attributes.  So, in this case, the router will not be offering Internet transit services.

2) Same router, but it will only be storing a select number of Internet routes (for key sites/businesses - let's say 1,000 routes.)  Still, no transit traffic.

3) Lastly, an ISP router maintaining full Internet routing table (322K routes as of today), and three OC3 connections to other ISP neighbors.

The solution:

Hardset requirements:

BGP Full table, Cisco recommends 1GB of RAM

CEF Requirements (if enabled [enabled on most by default])256-512MB of RAM

RIB Requirements (256-512MB)

iBGP = Branch routers

eBGP = WAN/Edge Routers

http://www.cisco.com/en/US/products/hw/routers/ps359/products_tech_note09186a0080110d68.shtml#ts1

http://www.cisco.com/en/US/tech/tk365/technologies_q_and_a_item09186a00800949e8.shtml

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094a83.shtml

Branch routers have rinky dink processors, very low throughput and not intended for any type of service as an edge device for production traffic. Running eBGP, a full table, I would not even consider looking at any ISR routers. I focus on anything that is for enterprise and service provider edge applications, in your case: Internet Edge Routers

armed with new information

- eBGP w/ two ISP's (no iBGP)

- let's say partial BGP routes this time (let's go with approximately 1,000)

- OSPF locally, but minimal OSPF routes (let's say less than 20)

- no other services or processes

You also have to take cost into consideration:

This does not justify the need for a 7200 or a ASR as your requirement does not include a full table, however, with multiple peers, eBGP, a beefier processor would be needed. The only router that supports anything above 200Mbps (100Mbps plus 100Mbps downstream to your network ) is the 3900 series based on packets per second. Note: The ISR routers feature an ASIC bus, replacing the PCI bus found in older routers. Please note that unlike ASIC driven switches and routers, the ASIC found in the ISR line of routers is just for bus operation only. Routing functions are still fully handled by the CPU

http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

The 2800 routes do not have the performance to meet 200Mbps.

Customers interested in purchasing Cisco router or its price, please refer to below links:

Cisco 2951 price

Cisco 2901 price