Our organisation recently underwent a network security audit and one of the recommendations was to implement EIGRP Authentication on our Layer 3 switches. Our LAN is segmented into different VTP Domains with routed links between each.
All of the segments consist of Cisco 3750E or 3750X switch stacks and they link back to a pair of Cisco 6509's (layer 3, routed links).
We have been able to configure the EIGRP Authentication on most of the routed links. However, there are a couple of 3750E Switch stacks which do not seem to accept the commands required to do so, i.e.
ip authentication mode eigrp AS number md5
ip authentication key-chain eigrp AS number key chain
When we attempt to apply this configuration to the interfaces, they do not seem to apply, that is, they do not show up on the running-config. The other end of the link (core 6509) accepts the commands fine.
The 3750E switches in question are running C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2 (44) SE1.
I can create the key chain on these switches fine, but cannot apply the EIGRP authentication configuration.
Is this possibly a software version issue or is there something blatantly obvious that I may have overlooked?
You mentioned that the 3750s stacks link to a pair of 6509’s , is it through a port-channel or individual interfaces ? If using port-channels , does the EIGRP commands show up under the port-channel config ?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.