Protocol Address Age (min) Hardware Addr Type Interface S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,ĭ - Remote, C - CVTA, M - Two-port Mac Relayĭevice ID Local Intrfce Holdtme Capability Platform Port ID Local virtual MAC address is 0a (v1 default)Ģ state changes, last state change 01:03:07ĭebugging HSRP shows that the two are not talking to each other, even though CDP and ARP look fine: SW1#sh cdp neighĬapability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge Both the top two switches think that they are the active switch: SW1#sh standby vlan 10Ģ state changes, last state change 01:02:08Īctive virtual MAC address is 0a (MAC In Use) With this image, we don’t get any working HSRP. System image file is 'unix:/home/gns3/Documents/GNS3/images/i86bi_linux_l2-adventerprise-ms' SW1#sh verĬisco IOS Software, Solaris Software (I86BI_LINUXL2-ADVENTERPRISE-M), Experimental Version 15.1(20131216:211730) Ĭopyright (c) 1986-2013 by Cisco Systems, Inc. Nothing too hard here, but the image makes all the difference. The configuration is as follows: SW1#sh run int e0/0 The VPCS host is connected to an access port that’s in VLAN 10. The top two switches are set up with HSRP running for VLAN 10, with trunk ports between them and the third switch, that just has VLAN 10 configured.

Needless to say that a router image is not the same as a switch image. IOU images for routers follow pretty much the same naming format: Most of these are using the ipbasek9 image. IOU images for switches are usually named i86bi_linux_l2- such as: Don’t ask me to supply the IOU images, though, that’s your homework… IOU Switch images Calling the Layer 2 switch images is a bit of a misnomer because they can actually perform layer 3 functionality (such as having a layer 3 VLAN interface), so don’t worry too much about it being called layer 2 (or l2 in the filename). We have Layer 2 images for switches, and we have router images. This all came about when discussing HSRP and IOU limitations with Maureen on a post about HSRP and ASICs. Things may look correct, but when you dig deeper down into it, you might not get the results you are looking for. Finding the right IOU images can be a tricky thing to do, depending on what you are looking for.

Cisco iou images