Benefits to summarizing these routes on a 3750 sw stack?

[keithsauer507]

We have 8 Cisco 3750's (1 is a G and 3 are X's the rest are regular 3750v2's) in a stack.  This is the center of the routing at a main office.  There are remote branches and depending on the ISP or how many interfaces were on the router, the routes have to go to either 10.1.0.1 or 10.1.0.2.  I know the IP's are not contiguous enough to summarize this even better, however if I summarize these would it be worth the time.

I will include a screen shot to show what I mean.  But basically  taking 8 ip route statements down to 3.  

[Rajeev Sharma · Accepted solution]

Hey Keith,

Summarizing is always a good practice for many reasons. In your case you may check the sdm template you are using and if it's desktop default so i believe its a good option to summarize as many routes as you can because with this sdm template which is basically how hardware TCAM is allocated to all the resources, namely IPv4, QoS, ACl, etc.

Use the command "show sdm prefer" to check the current sdm template.

HTH.

Regards,

RS.

[keithsauer507]

Yes I did show sdm prefer and its desktop default.  I was able to summarize 8 ip route statements into 3.  Could have done more if the destination was the same.  That will change in a few months as some routers will be combined.

Thank you.