A Few Cool Photoshop Tips And Tricks, Part 1

When it comes to entering the graphic design world, creating interesting pieces for a job or sharing artwork with family and friends, there are plenty of cool Photoshop tips and tricks to consider. Whether you are just experimenting with the tools or already know how to layout a magazine spread, there will always be a new shortcut or trick to make life much easier. Below, you will find a few tips to add to your repertoire or share with others:

Easy Photoshop Tips and Tricks

Have you ever wanted to easily create the image of Earth and dread using the circle tool? There is an easy way to design the world in six steps, which should take less than a minute to complete. First, you should select File/New from the menu bar and create a file size that measures about 200 pixels by 200 pixels. The RGB mode should be selected for this trick. Next, choose a light blue shade for the foreground color and a darker blue for the background color.

Under the Filters tab, select Render, and then choose Clouds. The scene that will greet you should look a lot like the sky. It is the clouds filter that utilizes the foreground and background colors needed to construct this image in your file. If you desire a different look, you can press Ctrl + F on Windows or Command + F for a Mac to reapply the filter. Each time this key combination is pressed, you will receive a somewhat different outcome.

Now, return to the Filter menu and select Render, and then choose Lighting Effects. Once you enter the Light Effects menu, you are able to alter the shape of the ellipse to a circle that becomes centered on your file. Changing the Narrow setting to 39 next follows choosing the Default Spotlight setting.

Sometimes a Photoshop project calls for texture. There are thousands of backgrounds to create that range from a grainy composition to a multi-faceted mess (depending on the look you are going for). To create a paper texture in Photoshop, you should start a new file that measures 60 x 60 pixels. The color should be in RGB. Next, select the following commands in this same order: Filter, Noise, Add Noise. Once completed, choose Gaussian, which is set to 80%.

The next step to create a paper texture is to select Filter, then Stylize, followed by Emboss. The angle should be set to -50, the Height to 2 pixels, and the Amount to 70%. The background will now resemble a gray embossed selection. To change the color, choose Image, then Adjust, followed by Hue-Saturation-Brightness. Once you select the Colorize checkbox, you should set the Hue to a different setting. To gain your personal preference, you can adjust the contrast.

To create the appearance that objects are glowing without using any filters, choose an object to work with that will be duplicated as a layer. First, select the color you’d like your glow to be. After choosing the lower duplicate, click on Edit from the menu, then Stroke. When the Stroke Options appear, the pixel width should be set between 1 and 16. It is important to remember that the larger number you choose, the thicker the glow will appear.

Before exiting, you should glance under Location to make sure that the Outside option is selected. The next step involves applying a Gaussian Blur to the layer, which can be found under the Blur option in Filters. This will soften the glow applied to the layer. Some individuals even repeat the process to create a double glow, which is some cases, can really make an image stand out.

Cisco CCNP / BSCI Exam Tutorial: Filtering BGP Updates With Prefix

A major part of your BSCI and CCNP exam success is mastering BGP, and that includes filtering BGP routing updates. In this tutorial, we'll take a look at how to filter BGP updates with prefix lists.

R4 is advertising three networks via BGP. The downstream router R3 sees these routes and places them into its BGP table as shown below. R3 has two downstream BGP peers, R1 and R2, and is advertising itself as the next-hop IP address for all BGP routes sent to those two routers.

R4(config)#router bgp 4

R4(config-router)#network 21.0.0.0 mask 255.0.0.0

R4(config-router)#network 22.0.0.0 mask 255.0.0.0

R4(config-router)#network 23.0.0.0 mask 255.0.0.0


R3#show ip bgp

BGP table version is 4, local router ID is 3.3.3.3

Status codes: s suppressed, d damped, h history, * valid, > best, i –
Internal

Origin codes: i - IGP, e - EGP, ? – incomplete

Network Next Hop Metric LocPrf Weight Path

*> 21.0.0.0 10.2.2.4 0 0 4 I

*> 22.0.0.0 10.2.2.4 0 0 4 I

*> 23.0.0.0 10.2.2.4 0 0 4 I

R3(config)#router bgp 123

R3(config-router)#neighbor 172.12.123.1 next-hop-self

R3(config-router)#neighbor 172.12.123.2 next-hop-self

In turn, both R1 and R2 have these three routes in their respective BGP tables.

R2#show ip bgp

BGP table version is 4, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i –
Internal

Origin codes: i - IGP, e - EGP, ? – incomplete

Network Next Hop Metric LocPrf Weight Path

*>i21.0.0.0 172.12.123.3 0 100 0 4 I

*>i22.0.0.0 172.12.123.3 0 100 0 4 I

*>i23.0.0.0 172.12.123.3 0 100 0 4 I


R1#show ip bgp

BGP table version is 4, local router ID is 19.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i –
Internal

Origin codes: i - IGP, e - EGP, ? – incomplete

Network Next Hop Metric LocPrf Weight Path

*>i21.0.0.0 172.12.123.3 0 100 0 4 I

*>i22.0.0.0 172.12.123.3 0 100 0 4 I

*>i23.0.0.0 172.12.123.3 0 100 0 4 I

If we wanted R3 to receive all three of these routes from R4 but not advertise all of them to R2 and R1, we've got a couple of options on how to block these routes. Cisco's recommendation is the use of prefix-lists, and once you get used to the syntax (which you should do before taking and passing the BSCI), you'll see they are actually easier to use than access-lists.

In this case, we're going to configure R3 to send only the route to 21.0.0.0 to R1 and 23.0.0.0 to R2. However, we do want these two routers to get any future routes that R4 advertises into BGP.

Since R1 and R2 will learn about these routes from an iBGP neighbor, they will not advertise the routes to each other.

On R3, we'll write a prefix-list that denies 22.0.0.0/8 and 23.0.0.0/8, but permits all other routes. After applying the prefix list as shown, R1 sees only the 21.0.0.0 /8 route.

R3(config)#ip prefix-list FILTER_R1 deny 22.0.0.0/8

R3(config)#ip prefix-list FILTER_R1 deny 23.0.0.0/8

R3(config)#ip prefix-list FILTER_R1 permit 0.0.0.0/0 le 32

R3(config)#router bgp 123

R3(config-router)#neighbor 172.12.123.1 prefix-list FILTER_R1 out

R3#clear ip bgp * soft

R1#show ip bgp

BGP table version is 6, local router ID is 19.1.1.1

Status codes: s suppressed, d damped, h history, * valid, > best, i –
Internal

Origin codes: i - IGP, e - EGP, ? – incomplete

Network Next Hop Metric LocPrf Weight Path

*>i21.0.0.0 172.12.123.3 0 100 0 4 I

The paths to 22.0.0.0/8 and 23.0.0.0/8 have been successfully filtered.

We'll do the same for R2, except the route not being expressly blocked is 23.0.0.0/8. The line "ip prefix-list permit 0.0.0.0/0 le 32" is the prefix list equivalent of a "permit any" statement in an ACL.

R3(config)#ip prefix-list FILTER_R2 deny 21.0.0.0/8

R3(config)#ip prefix-list FILTER_R2 deny 22.0.0.0/8

R3(config)#ip prefix-list FILTER_R2 permit 0.0.0.0/0 le 32

R3(config)#router bgp 123

R3(config-router)#neighbor 172.12.123.2 prefix-list FILTER_R2 out

R3#clear ip bgp * soft

R2#show ip bgp

BGP table version is 6, local router ID is 2.2.2.2

Status codes: s suppressed, d damped, h history, * valid, > best, i –
Internal

Origin codes: i - IGP, e - EGP, ? – incomplete

Network Next Hop Metric LocPrf Weight Path

*>i23.0.0.0 172.12.123.3 0 100 0 4 I

The paths to 21.0.0.0/8 and 22.0.0.0/8 have been successfully filtered.

To see the prefix lists configured on a route as well as the order of the statements in each list, run show ip prefix-list.

R3#show ip prefix-list

ip prefix-list FILTER_R1: 3 entries

seq 5 deny 22.0.0.0/8

seq 10 deny 23.0.0.0/8

seq 15 permit 0.0.0.0/0 le 32

ip prefix-list FILTER_R2: 3 entries

seq 5 deny 21.0.0.0/8

seq 10 deny 22.0.0.0/8

seq 15 permit 0.0.0.0/0 le 32

Get some hands-on practice with prefix lists and you'll quickly master them. Prefix lists are an important part of working with BGP in the exam room and production networks, so it's vital that you are comfortable working with them.