Enterprise Networking Guide
Traditional Carrier Leased Lines, Standard VPNs, or Cross-Region Enterprise Networking: How to Choose?
Compare traditional carrier leased lines, encrypted tunnels over the public internet, and our cross-region transmission service over existing broadband across provisioning lead times, cross-border stability, and daily maintenance, combining access options by headquarters, factory, and branch needs for a smooth transition.
When an enterprise needs to connect domestic and overseas headquarters, branch offices, manufacturing plants, and cloud systems, the market offers many different product names: some recommend ordering traditional carrier leased lines (such as MPLS or point-to-point dedicated lines), others suggest building public internet IPSec VPNs directly on existing office firewalls, and still others offer various forms of cross-region enterprise networking services.
When evaluating these options, business leaders and procurement teams do not need to study complex network protocol layers first; simply clarifying three practical questions—how each site connects locally, what path carries traffic across provinces and borders in the middle, and who handles day-to-day troubleshooting—allows you to make the right choice based on the importance of each location.
How traditional carrier leased lines, standard public internet VPNs, and our cross-region networking differ
Differences in provisioning speed, cross-border stability, and cost across options stem mainly from how they connect two locations:
| Networking option | How traffic travels between sites | Practical characteristics for enterprises |
|---|---|---|
| Traditional carrier leased line (e.g., MPLS / point-to-point dedicated line) | Telecom carriers lay end-to-end dedicated physical circuits or private networks | Low latency and high stability; however, requires on-site construction to pull new physical cables, long cross-border provisioning lead times, high monthly fees, and lengthy waits for temporary bandwidth upgrades |
| Standard public internet IPSec VPN or pure public internet networking | Uses existing local broadband at each site to establish encrypted connections or routing over the public internet | Lower cost and no new dedicated line construction required; however, the cross-border segment still travels across the public internet, so ERP, meetings, and large files remain prone to lag during international egress congestion and packet loss |
| Our cross-region enterprise networking service | Sites connect to the nearest PoP using existing internet broadband, while long-haul cross-region and cross-border segments travel over our dedicated transmission channel | No construction needed to lay new last-mile physical dedicated lines, faster provisioning than traditional carrier leased lines, and on-demand bandwidth scaling; avoids cross-border congestion on the public internet while keeping everyday web browsing on local broadband |
Put simply, even when two providers both call their offering "multi-site enterprise networking," a provider that only supplies hardware while sending cross-border traffic over the public internet will struggle to resolve peak-hour cross-border packet loss; our service retains your existing broadband at each site for convenient access while carrying cross-border and inter-provincial core business traffic over a stable cross-region transmission channel.
Combine access options around the actual needs of headquarters, factories, and branches
In real enterprise networks, no single approach has to be applied uniformly across every site (publicly shared MPLS migration cases from vendors such as Aryaka reflect broader enterprise trends, though they remain external vendor materials for market reference only). We typically combine deployment options around the business role of each location:
- Headquarters, manufacturing plants, and multi-cloud environments: Connect directly to our cross-region transmission network to keep ERP, production data, code repositories, and cross-border meetings running reliably, with dual-appliance and multi-path backup protection at core locations.
- Retaining firewall tunnels mandated by overseas headquarters: If your foreign-invested branch is bound by overseas headquarters security policies that prohibit replacing firewalls or removing existing IPSec tunnels, we can keep the existing firewall IPSec encrypted connection at both ends—just as in our Suzhou office and German headquarters FortiGate interconnect project—and use our cross-border transmission channel solely to carry and accelerate that tunnel (see How to Improve a Slow Cross-Border IPSec VPN When Headquarters Will Not Replace the Firewall?).
- Small offices or short-term sites: For remote branch offices without dedicated IT staff, we can ship preconfigured plug-and-play appliances or set up lightweight access for a single business application.
Key items to confirm before evaluating proposals and signing
When comparing proposals from different providers, confirming a few practical arrangements that directly affect daily operations helps avoid surprises after go-live (for a detailed breakdown of pricing components and related expenses, see What Factors Determine Enterprise SD-WAN Costs, and What Should You Prepare Before Requesting a Quote?):
- What path carries the cross-border segment: Confirm whether cross-border traffic travels over a dedicated transmission channel provided by the vendor or merely over an encrypted tunnel built across the public internet.
- Who provides and repairs local broadband at each site: We support using your existing local internet broadband at each location directly (without laying new last-mile physical dedicated lines); if local broadband itself goes down or an optical modem fails, the division of maintenance responsibilities between local broadband and the cross-region channel is clearly defined in the proposal.
- Service guarantees and maintenance responsibilities in the contract: When comparing vendors and signing, review the service guarantee scope (commonly called an SLA), fault response procedures, and maintenance division of labour explicitly stated in the formal service contract or its appendices, which govern both parties' commitments.
- Whether the new connection can run alongside existing links with rollback protection: Confirm whether the new connection can operate in parallel with existing dedicated lines or firewall VPNs so that a straightforward rollback path remains available during initial cutover.
Run alongside your existing network for a smooth transition and cutover validation
When upgrading network connectivity, enterprises worry most about disrupting factory shipments or office order entry on cutover day. During implementation, we follow a run alongside first, validate first, then switch in batches approach: we bring up the new channel without removing your existing circuits, select the applications most affected by lag (such as cross-border ERP, file transfers, or video meetings) to test on the new channel in real use while keeping legacy links as a rollback backup, and then migrate remaining workloads step by step once peak-hour office performance meets expectations.
Basic information to prepare for an initial consultation
- The cities and countries of the offices, factories, data centres, or public clouds you need to connect.
- An overview of current connectivity methods at each location (such as standard broadband, firewall IPSec VPN, or carrier leased lines) and the main issues encountered.
- Whether there are existing appliances that must be retained or security policies mandated by overseas headquarters; you do not need to prepare a technical comparison matrix upfront, as specific options can be confirmed step by step during our discussion.