3750 question

jason_lunde

So we have some 3750-48-TS's at work and I have a question. They are running the SMI IP base image c3750-ipbase-mz.122-35.SE5. This image is only suppose to support the eigrp stub feature, but we have found it able to run a fully-functional eigrp as. Have any of you all ran across this, or are there some limitations that we are not seeing?

Thanks for any input.

CChN

I verified through the Feature Navigator that you're correct - EIGRP stub is all that is available in the SMI image. The 3750s at work have 12.2(25), the base image, and stub functionality only.

Can you post some output from context sensitive help so I can see what features you have available?

keenon

you can upgrade the image for full support

DevilWAH

from my test 3750

Cisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)

avalible config under eigrp

SW3_3750(config-router)#?
Router configuration commands:
address-family Enter Address Family command mode
auto-summary Enable automatic network number summarization
default Set a command to its defaults
default-information Control distribution of default information
default-metric Set metric of redistributed routes
distance Define an administrative distance
distribute-list Filter networks in routing updates
eigrp EIGRP specific commands
exit Exit from routing protocol configuration mode
help Description of the interactive help system
maximum-paths Forward packets over multiple paths
metric Modify IGRP routing metrics and parameters
neighbor Specify a neighbor router
network Enable routing on an IP network
no Negate a command or set its defaults
offset-list Add or subtract offset from IGRP or RIP metrics
passive-interface Suppress routing updates on an interface
redistribute Redistribute information from another routing protocol
timers Adjust routing timers
traffic-share How to compute traffic share over alternate paths
variance Control load balancing variance

how is this just the stub features? or exactly what are the stub limitations as this seems to be identical to the eigrp features on my 3640 router?

jason_lunde

Devil,
Thats what I ran into as well. We got like 6 3750's for remote sites, and I was just playing around with them, and was able to fully configure eigrp, not just a stub router. I dunno, just something I thought other people might have run into.

tiersten

Sometimes features are present in a particular IOS version for a particular platform even if it shouldn't be there. If it doesn't officially support that feature then I wouldn't rely on it to always be there though. MPLS TE isn't listed as a feature of a 2600XM but it appeared in 12.3 but then disappeared in 12.4+.

jason_lunde

tiersten wrote: »

Sometimes features are present in a particular IOS version for a particular platform even if it shouldn't be there. If it doesn't officially support that feature then I wouldn't rely on it to always be there though. MPLS TE isn't listed as a feature of a 2600XM but it appeared in 12.3 but then disappeared in 12.4+.

Well said. Your probably right in that regard. Thanks for the input guys.

DevilWAH

jason_lunde wrote: »

Devil,
Thats what I ran into as well. We got like 6 3750's for remote sites, and I was just playing around with them, and was able to fully configure eigrp, not just a stub router. I dunno, just something I thought other people might have run into.

Have you actually read up on what stub routing is? I have never actually used it but reading it is seems that STUB routing is an extension to EIGRP, from reading the set up you still have to be able to configure EIGRP on both routers before STUB routing will work. So i get the feeling that the ipbase image should have a fully active EIGRP setup.