| Image | Pros | Cons | |-------|------|------| | vIOS-L2 15.7(3) | Most features, bug fixes | High memory (~1GB per node) | | vIOS-L2 15.2(4) | Lightweight, runs on low RAM | Missing newer features | | IOL L2 (Cisco IOL) | Very lightweight, CLI exact | No legitimate free download | | Open vSwitch (OVS) | Free, open-source | Not Cisco CLI, different behavior |
It seems the issue was/is with the IOU image, 'i86bi-linux-l2-adventerprisek9-15.2d'. I've since replaced it with 'i86bi_linux_l2- Google Groups Best L2 IOU image? - GNS3
The version depends on your use case:
! Configure management IP (VLAN 1) interface vlan 1 ip address 192.168.122.100 255.255.255.0 no shutdown exit
i86bi_LinuxL3-AdvEnterpriseK9-M2_157_3_May_2018.bin What images do I need in EVE-NG to do ENCOR and ENSARI? i86bilinuxl2adventerprisek9152dbin best
: On certain topologies, IOL interfaces default to half-duplex. This generates continuous log messages ( %CDP-4-DUPLEX_MISMATCH ). Proactively issue the duplex full command across all active switch-to-switch links to maintain clean console logs.
This runs as a (not embedded hardware) and emulates Cisco IOS switching/routing for: | Image | Pros | Cons | |-------|------|------| | vIOS-L2 15
! After boot, basic setup: enable configure terminal
The "Advanced Enterprise" (adventerprisek9) designation means it includes nearly all features required for advanced switching, including robust Layer 2 protocols, VLAN handling, and essential Layer 3 functionality. Configure management IP (VLAN 1) interface vlan 1
| Image | Pros | Cons | |-------|------|------| | vIOS-L2 15.7(3) | Most features, bug fixes | High memory (~1GB per node) | | vIOS-L2 15.2(4) | Lightweight, runs on low RAM | Missing newer features | | IOL L2 (Cisco IOL) | Very lightweight, CLI exact | No legitimate free download | | Open vSwitch (OVS) | Free, open-source | Not Cisco CLI, different behavior |
It seems the issue was/is with the IOU image, 'i86bi-linux-l2-adventerprisek9-15.2d'. I've since replaced it with 'i86bi_linux_l2- Google Groups Best L2 IOU image? - GNS3
The version depends on your use case:
! Configure management IP (VLAN 1) interface vlan 1 ip address 192.168.122.100 255.255.255.0 no shutdown exit
i86bi_LinuxL3-AdvEnterpriseK9-M2_157_3_May_2018.bin What images do I need in EVE-NG to do ENCOR and ENSARI?
: On certain topologies, IOL interfaces default to half-duplex. This generates continuous log messages ( %CDP-4-DUPLEX_MISMATCH ). Proactively issue the duplex full command across all active switch-to-switch links to maintain clean console logs.
This runs as a (not embedded hardware) and emulates Cisco IOS switching/routing for:
! After boot, basic setup: enable configure terminal
The "Advanced Enterprise" (adventerprisek9) designation means it includes nearly all features required for advanced switching, including robust Layer 2 protocols, VLAN handling, and essential Layer 3 functionality.
© Kuranda Koala Gardens 2026