: A similar virtualization environment that utilizes standard IOL structures for running lightweight topologies. Requirements for Deployment
: Full support for BGP, OSPF, EIGRP, and IS-IS. Security : IPsec VPNs, Firewall features, and SSH. i86bi-linux-l3-adventerprisek9-15.4.2t.bin
[PC1] -- eth0 -- [R1] -- eth1 -- [R2] -- eth0 -- [PC2] and IS-IS. Security : IPsec VPNs
: While newer than the 12.4 era, 15.4(2)T is considered highly stable for lab environments and certification preparation (e.g., CCNP or CCIE). CCNP or CCIE).