Stucked with NLB Sharepoint + NLB Service manager

Good day.

Need some help. Could not set up sharepoint farm work with NLB Service Manager cluster.

My configuration is:

1. scsm01.domain.loc - SCSM primary server + Web Content Server

2. scsm02.domain.loc - SCSM additional server + Web Content Server

both of them are the members of NLB cluster - scsm.domain.loc

3. sps-web01.domain.loc, sps-web02.domain.loc - both are members of sps.domain.loc NLB Cluster. 

Now i am trying to set up Sharepoint Web Parts for SCSM Web Portal.

1. I have started the installation of SCSM SharePoint Web Parts on sps-web01.domain.loc

2. In installation proccess i`ve told that Web content server is scsm.domain.loc

3. Installation completes successfully.

And now what i have.

1. If i am going to Sharepoint Central Admin Console i could see "Service Manager Portal"  web application withhttps://sps-web01.domain.loc URL address

2. So i am starting browser an going to https://sps-web01.domain.loc/smportal and everything fine, i am watching the SMPortal main page

3. If i am turning off one of SCSM Web Content Servers i am still watching this page, so the SCSM NLB (scsm.domain.loc) is working

The question is how to made the SharePoint Service Manager Protal works in NLB?

1. I could see "Service Manager Portal" on both servers (sps-web01, sps-web02) in IIS Console.

2.  If i am going to IIS console on sps-web01 and click Browse "Service Manager Portal" it shows me site but if i am going to sps-web02 and do the same - it shows me error "Internet Explorer cannot display the webpage"

I think that i missconfigure something in IIS or in Sharepoint, but what? How to force sps-web02 to show me the "Service Manager Portal" Site?