Network Setup

How to connect your JT-10.1 or JT-1.1 to the network you want to test.

Deployment Modes

The appliance can operate in two modes depending on your testing requirements.

Inline Mode

In inline mode, the appliance sits in the traffic path between two devices or network segments. All traffic passes through the appliance.

Use inline mode when you need to:

• Measure timing on live traffic
• Inject impairments (delay, jitter, loss)
• Test how systems respond to degraded network conditions

Characteristics:

• Traffic flows bidirectionally through the bridge
• The appliance is transparent (no IP address on data ports)
• No protocol traffic (ARP, LLDP, STP) is generated
• Latency added by the appliance is minimal (microseconds)

Passive Mode

In passive mode, one data port connects to a mirror (SPAN) port on a switch. The appliance receives a copy of traffic without being in the path.

Use passive mode when you need to:

• Monitor production traffic without risk
• Analyze timing on existing network paths
• Capture packets for offline analysis

Characteristics:

• Read-only access to traffic
• Cannot inject impairments (traffic is a copy)
• No impact on the monitored network
• May miss packets if mirror port is oversubscribed

Port Identification

JT-10.1

Port	Type	Label	Purpose
eth0	SFP+ 10G	Data A	First data port
eth1	SFP+ 10G	Data B	Second data port
eth2	RJ45 2.5G	Management	Web interface access

JT-1.1

Port	Type	Label	Purpose
eth0	RJ45 2.5G	Data A	First data port
eth1	RJ45 2.5G	Data B	Second data port
eth2	RJ45 2.5G	Management	Web interface access

Cabling

JT-10.1 (SFP+ Ports)

The SFP+ ports accept various transceiver types:

Connection Type	Recommended Module
Direct attach (< 3m)	DAC cable
Multimode fiber	10GBASE-SR
Singlemode fiber	10GBASE-LR
Copper RJ45	10GBASE-T SFP+

Ensure both ends of each connection use compatible modules.

JT-1.1 (RJ45 Ports)

Use standard Cat5e or Cat6 Ethernet cables. The ports are 2.5 GbE capable but operate at 1 Gbps for sustained testing.

Management Network

The management port should be connected to a network where you can access the web interface:

Option 1: Existing Network Connect to your LAN. The appliance obtains an address via DHCP and advertises via mDNS.

Option 2: Direct Connection Connect your laptop directly to the management port. Both devices will obtain link-local addresses (169.254.x.y).

Option 3: Isolated Management Network Connect to a dedicated management VLAN for security.

The management port is firewalled—only HTTPS (443) and mDNS (5353) are accessible.

Common Topologies

Testing Between Two Devices

Measure timing and inject impairments on the camera-to-server link.

Testing Network Equipment

Verify switch latency and test behavior under impaired conditions.

Monitoring Production Traffic

Passive monitoring of production traffic.

Best Practices

1. Connect management first — Verify web access before connecting data ports
2. Use dedicated management — Keep management traffic separate from test traffic
3. Label your cables — Clear labeling prevents confusion during testing
4. Verify link status — Check LEDs and web interface before starting measurements
5. Document your setup — Record topology for reproducibility

Troubleshooting

No link on data ports

• Verify cable connections at both ends
• For SFP+: ensure modules are fully seated
• Check that the connected device supports the link speed
• Try swapping cables or modules to isolate the issue

Can't reach management interface

• Verify management port has link
• Check that your computer is on the same network/subnet
• Try direct connection if network path is unclear
• Wait 60 seconds after boot for mDNS advertisement

Traffic not flowing through bridge

• Verify both data ports have link
• Check connected devices are sending traffic
• Confirm the bridge is enabled in the web interface