● LIVE LAB

Multi-Branch Enterprise Network Lab

Click a device to open its console in the browser. CLI = FRRouting config shell (vtysh) · SH = Linux shell inside the container.

ISP1-RTR
Primary ISP · 8.8.8.8 loopback
CLISH
ISP2-RTR
Backup ISP
CLISH
HQ-RTR1
Dual WAN · NAT · IP SLA failover
CLISH
HQ-CORE-SW
L3 core · VLAN SVIs
CLISH
BRANCH-A-RTR
Branch A · GRE tunnel0
CLISH
BRANCH-B-RTR
Branch B · GRE tunnel1
CLISH
DR-RTR
Disaster recovery site
CLISH
Quick tests to try:
From HQ-RTR1 CLI: ping 8.8.8.8 (internet via ISP1) · ping 10.255.255.1 (DR site)
From BRANCH-A-RTR CLI: ping 10.255.255.2 (HQ loopback) · show ip route (OSPF routes)
Failover demo: in HQ-RTR1 sh mode: ip link set eth1 down — watch traffic shift to ISP2 within seconds, then ip link set eth1 up to restore.