Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

CSS11501S-C-K9 Active-Standby

i have 2 CSS boxes, is it possible to configure them on the Active-Stanby mode using the Box-to-Box mode ??

im confused because on the Data sheet it's written that only Active-Active

please advice...



Re: CSS11501S-C-K9 Active-Standby

Box to Box mode is an Active/standby configuration.

For active-active Virtual interface redundancy is used (Where CSS serves as master of one virtual router and backup to a differnt VR)

Box to Box Redundancy

When to Use:

?When Active/Standby is the expected behavior.

?When a dedicated 10/100 link can be configured link between the CSS?s

?When Configuration-Synchronization is needed

When not to use:

?When Active/Active is needed

?When a dedicated 10/100 link between CSS?s cannot be used.

?Lack of 10/100 ports, or the switches are too far apart.

Hope it helps

Syed Iftekhar Ahmed

New Member

Re: CSS11501S-C-K9 Active-Standby

Thanks Syed for the reply,

but my question is the Content Switch model CSS11501S-C support Active-Standby ?

I worked on CSS11506 and i have configured two boxes with Active-Standby but for this one i'm confused because if you check the data sheet you will find that ..

Hasan Mohammad

Re: CSS11501S-C-K9 Active-Standby


As per my understanding CSS11501S-C is only different then 11501 in the terms that it supports ssl termination and Http compression.

The data sheet you mentioned doesn't mention ACtive/Standby for even 11503 & 11506. I can guarantee you that host to host in supported on 11503 and 11506.

I have not worked on CSS11501S-C specifically but I think it should support Box to Box Active/standby redundancy.

Syed Iftekhar Ahmed

New Member

Re: CSS11501S-C-K9 Active-Standby


please check the attached picture that i captured from the data sheet...

what did they mean by the redundancy feature mentioned on the table ?

Hasan Odeh