anchor.diff:  
   ```
   
  -The `router_<%= vars. app_runtime_abbr_lc %>` Gorouter registers all routes that do not have an `isolation_segment` value. The `router_is1` Gorouter only registers routes that have an `isolation_segment` value of `is1`.
  +The `router_<%= vars.app_runtime_abbr_lc %>` Gorouter registers all routes that do not have an `isolation_segment` value. The `router_is1` Gorouter only registers routes that have an `isolation_segment` value of `is1`.
   
   <% else %>
   
  
positive.code: ```
  IaaS network: sample-network
  |
  |_____ IaaS subnet: sample-subnet-<%= vars. app_runtime_abbr_lc %>-az1
  |
  |_____ IaaS subnet: sample-subnet-<%= vars. app_runtime_abbr_lc %>-az2
  |
  |_____ IaaS subnet: sample-subnet-is1-az1
  |
  
negative.code: 
  Configuration is achieved using two manifest properties, `routing_table_sharding_mode` and `isolation_segments`.
  
  The three supported values of `routing_table_sharding_mode` are `all`, `<%= vars.app_runtime_abbr_lc %>-and-segments`, and `segments`.
  
  * `all`: All routes are registered. This is the default mode to preserve the Gorouter's existing behavior.
  
  