Quick answer: If you run more than one site in Malaysia, you usually need two things: internet access at each site, and a way to connect the sites to each other. Dedicated Internet Access (DIA) gives each site its own dedicated line to the internet. Metro Ethernet (Metro-E) and point-to-point leased lines connect your sites privately. Many multi-site businesses combine them, for example DIA at head office, with Metro-E or a leased line linking branches back to it.
The right mix depends on where your applications live, how much traffic moves between sites and how much downtime you can accept. This guide explains the three options in plain language and gives you a checklist to take to a carrier. New to the basics? Start with what is Dedicated Internet Access (DIA).
The three options at a glance
| Option | What it does | Typical use for multi-site |
|---|---|---|
| DIA | A dedicated, symmetrical line from your site to the internet, not shared with other customers. | Internet access, cloud applications, VPNs and public-facing services at head office or each branch. |
| Metro-E | A private Ethernet connection between locations, carried over the carrier’s metro network. | Linking offices, factories or warehouses in the same region, or carrying DIA over Ethernet. |
| Point-to-point leased line | A dedicated private circuit between two specific sites. | A fixed link between head office and one important site, such as a data room or plant. |
For more detail on each, see what is Metro Ethernet and what is a leased line.
Four common multi-site designs
- DIA at every site. Each branch has its own internet line, and staff reach head-office systems through VPN or cloud services. This is simple to start and keeps every site independent of the others.
- DIA at head office, Metro-E or leased line to branches. Branches reach head-office systems over the private link, and internet traffic can be routed out through head office. This suits businesses with servers or security tools at the centre.
- DIA at head office and a second DIA at your key site, linked privately. Both sites can reach the internet on their own line and still talk to each other privately. Useful when two sites each carry critical work.
- Add a backup line at critical sites. A second line on a different route helps if one fails. See how to achieve near-zero internet downtime.
How to choose: 6 questions to answer first
- Where do your applications run? If most are in the cloud, each site mainly needs good internet access. If they sit in one office or data room, branches need a reliable path back to it.
- How much traffic moves between sites? Large file transfers, backups or voice and video between sites favour a private link.
- How much downtime can each site accept? A site that cannot stop, such as a factory line or a clinic, may need a backup line. See our guide for factories and industrial parks.
- Do you need fixed public IP addresses? Static IPs matter for VPNs, firewall rules and hosted services. See static IP addresses with DIA.
- What bandwidth does each site need? Size each site on its own use, not a single number for all. Our bandwidth sizing guide shows how.
- What are the SLA expectations? Compare the uptime commitment and repair time at each site. See DIA SLAs in Malaysia explained.
Planning: what affects timing
Each site is ordered and installed on its own. Lead time is generally about 4 to 6 weeks for a building already on the carrier’s network and 8 to 16 weeks where new fibre is needed, so a site that needs new fibre can set the pace for the whole project. Ask for a site survey on every location early. The DIA installation timeline checklist lists the steps from quote to go-live.
What to prepare before you ask for a quote
- The address of every site, and which is head office.
- Which sites need internet, which need a private link, and between which pairs.
- Rough bandwidth per site and any peak times.
- Whether you need static IPs, and how many, at each site.
- Which sites need a backup line.
- Your current carrier and contract end dates. See the contract renewal checklist.
DACS works across the major Malaysian carriers, so one conversation can cover all your sites. Ask for a competitive quote or write to info@dacs.com.my.
Frequently asked questions
Do I need DIA at every branch?
Not always. Small branches may reach head-office systems over a private link and use head office for internet. Sites with their own cloud use, public services or a need to keep working if head office is down usually benefit from their own DIA.
What is the difference between Metro-E and a leased line?
Both give you a private connection between sites. A leased line is a dedicated circuit between two specific points. Metro-E is an Ethernet service on the carrier’s metro network that can link several locations. Which fits depends on your sites and the carrier’s network at each address.
Can one carrier cover all my sites?
Often, but not always. Coverage differs by address, and some businesses use more than one carrier for resilience. DACS can compare options per site.
Can I add or resize sites later?
Generally yes. Plan for growth, such as a new branch, and ask your carrier how bandwidth upgrades and added sites are handled on your contract.
Does this apply to sites outside the Klang Valley?
The same approach applies, but available carriers, lead times and fibre reach vary by location, so confirm each address with a site survey.
Related reading: DIA FAQ · DIA carriers compared · Multi-office case study · Business internet buyer’s guide
Last updated: 12 November 2026. This is general guidance; availability, lead times and terms depend on your addresses and the carrier’s service order.