Monday, October 31, 2011

What Cisco Fans Talk About Cisco 1841

Cisco 1841 router is intended for use in small and medium branch offices.  This router is a low-end device making it one of the cheaper models produced by Cisco, and also Cisco 1841 is enterprise class and quite reliable.  As we expect, Cisco 1841 router uses the IOS software and uses Cisco standard cards to provide nearly any type of interface we want in it. 

Many people in IT are familiar with Cisco hardware and IOS so configuration and maintenance should be easier to attain than with another brand.  This is rack mountable making it fit much better into the wiring closet.  However it does only have a single power supply reflecting its intended place in the satellite offices rather than central routing for a large company. 

This particular model/CISCO 1841 series comes with the following features:
  • 2 10/100  Ethernet ports  (copper - RJ45)
  • 2 Wan Interface Card (WIC) slots for the ports of your choice
  • 1 internal expansion slot
  • standard pair of console/auxiliary console ports
  • 1 USB port for console access (local device management)
  • 128 Meg RAM; only expandable to 384 Meg. 
  • 1U height

The Cisco 1841 routers come with three-speed fans which are controlled by a thermostat in the chassis.  The fan speed varies based on cooling demands which reduces noise and fan wear. Cisco 1841 comes with internal clocks, but is dependent on a non-replaceable battery.  Should the battery ever fail you will need to return the router to Cisco for battery replacement, although it should be covered by the warrantee.     

If you intend to use VoIP you will need a separate appliance as Cisco 1841 does not support either voice or VoIP despite having two WICs.  As with most low-end routers having only one power supply is a bane, although with most typical locations it would be installed in, it simply means not being allowed redundant power supplies, and breakers.  The Cisco 1841 router is a fine choice for a field office or a small office with less than 300 or so users depending on how they use it.  It is overkill for a job of less than 20 nodes where I’d recommend a smaller router or a PIX firewall.   It should be able to handle NAT, having more than one route to the internet or headquarters, as well as a reasonable amount of access control lists (ACLs).

Tuesday, October 25, 2011

Cisco Set to Acquire BNI Video

"Cisco believes, like many do, that the amount of video is only going to increase. It's already half of Internet traffic and I'm expecting it to be upward of 90 percent in the next five years," said Zeus Kerravala, principal analyst at ZK Research. "In order for ISPs to be able to control video quality and monetize it, these technologies are important."

Cisco's move to streamline its operations hasn't kept the company from making new acquisitions. Cisco plans to acquire BNI Video for $99 million.

A privately held company in Boxborough, Mass., BNI Video supplies service providers with two video products that offer video back-office and content delivery network or CDN, analytic capabilities.

Cisco is looking to BNI's technology to beef up its Videoscape TV platform. Videoscape lets service providers deliver video to any device over any Internet Protocol network. Cisco said BNI Video's technology would also help its service provider customers reduce operational costs and complexity and expand opportunities to monetize content.

"Cisco is committed to working with our service provider customers to deliver next-generation IP-based video experiences across devices," said Marthin De Beer, senior vice president and general manager of Cisco's Emerging Business Group. The BNI Video acquisition is part of that commitment by giving customers migration path to the Videoscape platform.

Cable Industry Encouraged
BNI Video has an industry background that may have attracted Cisco to become more than an investor. Along with Cisco, Comcast and Time Warner Cable were early investors in BNI Video.
Tony Werner, chief technology officer for Comcast, said BNI's technology has the potential to "play a critical role in advancing video experiences for Comcast's customers," and is encouraged by Cisco's acquisition of the company.

Likewise, Mike LaJoie, chief technology officer at Time Warner Cable, said the companies joining forces is an opportunity to "take video service providers to the next level with Internet video, helping to manage networks more efficiently to deliver advanced TV entertainment experiences to consumers."

Acquisition Trends
With the BNI Video acquisition that was announced Thursday, Cisco is putting its money where its mouth is. Cisco has stated that video is one of its five company priorities, the biggest growth driver for IP traffic and, as a result, the company's core networking business. The BNI Video acquisition follows the recent acquisitions of ExtendMedia and Inlet Technologies, which also strengthen Cisco's Videoscape portfolio.
"Cisco believes, like many do, that the amount of video is only going to increase. It's already half of Internet traffic and I'm expecting it to be upward of 90 percent in the next five years," said Zeus Kerravala, principal analyst at ZK Research. "In order for ISPs to be able to control video quality and monetize it, these technologies are important."

Kerravala also noted Cisco's recent acquisition trends. He expects the firm to return to doing smaller deals, below $150 million, until it gets the repatriation rates it needs.

"Most of Cisco's cash is tied up overseas, so people are trying to guess at what the next acquisition might be," Kerravala said. "It's going to continue to be companies like this that are very specialized, and do one thing well in one of Cisco's core areas. This is becoming the norm for Cisco acquisitions."

Friday, October 21, 2011

Common Questions & Guides for Cisco 1841 from Yahoo Answers

As we known, Cisco 1841 series is a super star among Cisco 1800 series,
Q: How to configure Cisco 1841 router to connect through satellite?
I am trying to configure my Cisco 1841 router to connect to the Internet through a satellite dish. I am stuck. All i need to know is what to do on my router. Sample config would be appreciated as well. I also want the outside world to access services such as web and ftp through the satellite connection
The connection is as follows
LAN----------|Cisco 1841 Router|-----------|Satellite modem|------Internet
A: Have you used another router in the past and you're just upgrading to the new Cisco one? If so, just copy the settings from the old router. If this is a new install, you're going to need the info from your satellite internet provider, like your login info. Your IP address if you have one (as opposed to DHCP), etc.

Q: Can I display a Cisco 1841 system info on my PC?
I am new to cisco equipments, I have a Cisco 1841. First is it possible to display a the router info on my PC. If so how do i connect the 1841 to my PC. And also can configure the router from my PC like the Linksys routers.
A: The Cisco routers are a professional grade router and way outperform the low end home grade routers like Linksys.
The Cisco 1841 can be configured using CLI (command line interface) with a serial connection and Hyperterminal on a Windows computer. It can also be configured using CLI using the LAN port of your pc connected to its LAN port.
Later models of 1841 also permit configuration via a Web GUI interface. (You are familiar with Web GUI as it is the only promulgated mode for configurations on low end routers.)
We do not know which version of firmware you have on your 1841 so we cannot tell you whether it supports the Web GUI mode or not. You indicate you are new to Cisco equipment but you did not indicate this was a new Cisco 1841.
The best way to determine this is to try to log onto it. You will need the user name and password. If these are lost, you can do a factory reset and use factory defaults.

Q: How can we use 3 ADSL line in Cisco Router 1841?
I have Cisco 1841 router. I already installed 2 ADSL WIC in both slot available on it. I want install one more ADSL WIC too in this router (3rd one)
Please let me know any way to adopt 3 rd WIC card on it ?. If not, please let me know , Is it available 2port ADSL WIC ?
A: Cisco doesn't make a 2 line ADSL WIC. You have 2 options:
1. Pull at least one of the WIC-1ADSL cards and install a WIC-4ESW 4-port switch and use external DSL modems.
2. Upgrade to a Cisco 28xx series router that supports more expansion cards.

Q: I would like to add more ether net ports to cisco 1841, which card i must use?
A: If you want to use these Ethernet ports as routed ports like build-in Ethernet ports, You have two options listed below:
HWIC-1FE 1-port 10/100 Routed Port HWIC
HWIC-2FE HWIC two routed port
If you are going to connect some PC or other devices, you can use switch ports like below:
HWIC-4ESW Four port 10/100 Ethernet switch interface card
You have only two slot in this router so choose carefully.

Q: How to enable bgp in cisco 1841 router?
A: You need advanced IP Services software image for this. See sources link [1] for further details, on how to upgrade.
See link [2] for configuration guide on BGP.
the quick answer is :
1.router bgp autonomous-system
2. network network-number [mask network-mask] [route-map route-map-name].
Configuring a good BGP router is not an easy task. You should read more about this, if you want to use it in a real-life network implementation.

Q: Cisco 1841 - how to NOT route between subnets?
I have an 1841 router connected to the Internet connection via one ethernet interface and half a dozen subnets via a trunk on the other interface. I want each of those subnets to be able to access the internet, but for security reasons I want to prohibit any routing between the subnets so they remain isolated from each other. How would I go about arranging this?
A: Have you made an ACL? Create one to block the subnet you do not want accessed and apply it inbound on the virtual interface.
If I remember right, something like this (i'll use as the destination vlan).
access-list 101 deny ip any
Apply this inbound on the virtual int for this vlan,
virtual int 0/1
access-group 101 in

Q: Example config cisco 1841 with 2 hwic 4esw card using no vlans?
I have a cisco 1841 with 2 hwic 4esw cards and I want to setup the cards to work as L2 switches attached to the FE0/1 interface with the FE0/0 interface used as the connection out. All traffic thru the 2 switches would be NATed through FE0/0 also. Any ideas how I can do this without VLANs
A: How exactly are those two cards connecting to the Fa0/1 interface? You only mention the one router.
To NAT directly on that 1841 for switch ports on those cards, best way is to create an SVI and configure it as nat inside. That would technically require a vlan, but if it's dot1q tags you're trying to avoid you could always make it the native vlan or just the vlan 1 default. Those ports on the two hwics should be access ports anyway so it shouldn't be sending any tagged frames anyway unless you're trunking to something else that you haven't mentioned.
To give you a config I'd need to know what you mean by "I want to setup the cards to work as L2 switches attached to the FE0/1 interface". How are these cards attaching to the Fe (Fa?) interface of the router? You mean "attached" as in they're both part of the same physical router?

Q: How to configure ACL 115 on Cisco 1841?
Host is not allowed to access host All other hosts are allowed to access Configure the ACL on B1 using ACL number 115. Please help!
A: Since I don't know which router is B1 incoming or outgoing traffic the ACL could be written for outgoing.
access-list 115 deny ip host host
access-list 115 permit ip host any
for outgoing traffic... would still need ip access-group 115 out on the interface.
alternately it could be written:
ip access-list extended 115
10 deny ip host host
20 permit ip host any
This one is a bit easier since your able to place the ACL nearest the point of origin on B1 and you can use an extended.
So the ACL is extended.
Applied to interface FA0/0 on the B1 router.
ACL should be applied to out.
access-list 115 deny ip host host
access-list 115 permit ip any any
ip access-group 115 out

Monday, October 10, 2011

Five Settings You Need to Know about Google+ Privacy

Whether you're lurking around Google's new social network or are already actively using it, knowing your Google+ privacy and security settings is essential. From disabling email notifications to ditching your Google+ account, check out these five important settings.

CIO — While Google's (GOOG) new social network, Google+, is barely a week old, it's already received a lot of attention from tech pundits and the social media community. And as with any new online service, understanding how to control your information is essential.

Here's a look at five important Google+ privacy settings that let you manage who can email you directly, how you're notified of Google+ actions, how to disable the Google+ service, and more.

1. How to Prevent Anyone on Google+ from Emailing You
 While Google+ doesn't display your actual email address, one setting lets anyone send you an email by clicking a button, possibly exposing you to an influx of spam or unwanted communications. Here's how to ensure this option is disabled.

In Google+, head to the top right corner of your screen, click the gear icon and select "Google+ Settings." Select the "Profile and privacy" tab on the left, then choose "Edit visibility on profile" next to "Public profile information."

Ensure the box is unchecked to disable this feature. Otherwise choose who to give this option to from the drop-down menu.

2. How to Selectively Disable Post Resharing on Google+
When you post an update or link in Google+, you have the option to share it publicly or with certain circles. When your post appears in your friends' streams, they can then reshare your post with their friends, unless you disable this option.

Here's what to do if you dont want others to share one of your posts.
 First, write your post or share your link and choose the circles you want to share it with. Once it's posted, click the drop-down menu on the left of the post, then select "Disable reshare."

This will remove the "Share" link next to "Comments," preventing others from reposting it. Visit this same drop-down menu to tweak other settings for your posts, including editing the text after publishing it, deleting the post and disabling the comment feature.

3. How to Disable Google+ Email Notifications
When you first joined Facebook, you were likely bombarded with friend request and friend acceptance emails. The same goes for Google+—though it was announced just a week ago, you've probably received email notifications when someone adds you to a circle or comments on one of your posts. Here's how to turn email notifications off if they're flooding your inbox.

From the gear icon in the top right of your Google+ page, choose "Google+ Settings," then click the Google+ tab on the left side of your screen. This page shows you which emails you're currently receiving.

By default, Google+ will send you an email for essentially every action others take that affects you. Uncheck the boxes next to the notifications you no longer want to receive.
Visit this page, too, to add your phone number if you want to be notified via SMS, as well as to designate specific circles or users whose tags of you are automatically approved.
4. How to Export Your Google+ Data

Similar to Facebook's data portability feature, Google+ also gives you the option to download to your computer your Google+ information and activity, including Picasa Web albums and photos, your Google profile, Google Buzz information, Google Contacts and Stream activities.

To download your data, click your full name or email address in the Google+ bar, then select "Account settings." Choose the "Data liberation" tab, then click either "Download Your Data" to export everything, or select a specific service.
5. How to Quit Google+

If Google+ isn't for you and you'd like to leave the service, you have three options.

1. You can change your profile visibility settings to hide everything except your name and photo from public view. This also lets you hide the content that appears on your profile without deleting or losing access to anything you've already created. Everything you've shared, however, will still be accessible by those with whom you've shared it.

To change your profile visibility, click the Profile icon in Google+, then click "Edit profile." Chose the About tab, then click the profile section or sections you want to hide, then click Save.

2. Your second option is to downgrade your Google+ account, which will delete your profile and remove your Google+ posts, circles and other content. You'll still be able to access Gmail and most other Google services.

To do this, click your full name or email address in the Google+ bar, then click "Account settings" and choose "Account overview." From here, click "Delete profile and remove associated social features."

3. The last option is to delete your Google account, which means you'll lose access to all Google services, including Gmail. For more information on deleting your Google account, visit the Google Accounts Help page.

Notes: If you would like to read some news related Google Plus, you can visit: Google Plus = Facebook + Twitter+ RSS + Skype?