Saturday, January 7, 2012

MCITP - The last value you need to be concerned with is the site-link schedule

By William M. Tyner


The site-link name is pretty obvious?it's what you name your site link. The site-link cost is less plain. A site-link cost is a worth that is allotted by the administrator to spot the velocity of the link between the two different sites, with a lower number indicating a faster connection.

Normally, Windows Server 2008 defaults all site links at cost 100, and it's up to directors to manually create costs for the remainder of the topology. Table 1.6 shows a popular cost-link table.

TABLE 1.6 Suggested Site-Link Cost Table

Available Bandwidth (Kbps) Site-Link Cost

4096 283

2048 309

1024 340

512 378

256 425

128 486

64 567

56 586

35.4 644

19.2 798

9.6 1042

Bear in mind that site links aren't restricted to IP. In fact , they use Remote Pro- cedure Call (RPC) over IP. Except for your purposes here, IP will suf?ce. Site links can also use the Straightforward Mail Transfer Protocol (SMTP). Nevertheless SMTP isn't available if you are in the same domain. In the same domain, you are limited to RPC over IP.

If you read and did your exercises in Sybex?s MCITP Certification Active Directory Configuration Study Guide, you are probably acquainted with ways to set this up. Each site link requires a schedule for replica- tion. This is because you Do not necessarily desire your servers reproducing traffic all over the network while you have 1,000 users attempting to access a specific ?le over a Wan. It creates lots of traffic. For this exam, just keep in mind that schedules are part of site links. The particular process of setting these up has been covered.

The point of a site-link bridge is to function as a shortcut between 2 sites that are not actually linked. In other words, if site A connects to site B, and site B is linked to site C, site A can be linked thru site C by utilizing a site-link bridge.




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