diff --git a/nlsr.conf b/nlsr.conf
index 948c67a..8b10210 100644
--- a/nlsr.conf
+++ b/nlsr.conf
@@ -2,29 +2,29 @@
 
 general
 {
-; mandatory configuration command section network, site and router
+  ; mandatory configuration command section network, site and router
 
-    network /ndn/         ; name of the network the router belongs to in ndn URI format
-    site /edu/memphis    ; name of the site the router belongs to in ndn URI format
-    router /%C1.Router/cs/pollux    ; name of the router in ndn URI format
+  network /ndn/         ; name of the network the router belongs to in ndn URI format
+  site /edu/memphis    ; name of the site the router belongs to in ndn URI format
+  router /%C1.Router/cs/pollux    ; name of the router in ndn URI format
 
-; lsa-refresh-time is the time in seconds, after which router will refresh its LSAs
+  ; lsa-refresh-time is the time in seconds, after which router will refresh its LSAs
 
-    lsa-refresh-time 1800      ; default value 1800. Valid values 240-7200
+  lsa-refresh-time 1800      ; default value 1800. Valid values 240-7200
 
-; log-level is to set the levels of log for NLSR
+  ; log-level is to set the levels of log for NLSR
 
-    log-level  INFO       ; default value INFO, valid value DEBUG, INFO
-    log-dir /var/log/nlsr/  ; path for log directory (Absolute path)
-    seq-dir /var/lib/nlsr/  ; path for sequence directory (Absolute path)
+  log-level  INFO       ; default value INFO, valid value DEBUG, INFO
+  log-dir /var/log/nlsr/  ; path for log directory (Absolute path)
+  seq-dir /var/lib/nlsr/  ; path for sequence directory (Absolute path)
 }
 
 ; the neighbors section contains the configuration for router's neighbors and hello's behavior
 
 neighbors
 {
-; in case hello interest timed out, router will try 'hello-retries' times at 'hello-timeout'
-; seconds interval before giving up for any neighbors (deciding link is down)
+  ; in case hello interest timed out, router will try 'hello-retries' times at 'hello-timeout'
+  ; seconds interval before giving up for any neighbors (deciding link is down)
 
    hello-retries 3                     ; interest retries number in integer. Default value 3
                                        ; valid values 1-10
@@ -34,26 +34,27 @@
 
    hello-interval  60                  ; interest sending interval in seconds. Default value 60
                                        ; valid values 30-90
-; neighbor command is used to configure router's neighbor. Each neighbor will need
-; one block of neighbor command
 
-   neighbor
-   {
-       name /ndn/edu/memphis/%C1.Router/cs/castor        ; name prefix of the neighbor router consists
+  ; neighbor command is used to configure router's neighbor. Each neighbor will need
+  ; one block of neighbor command
+
+  neighbor
+  {
+    name /ndn/edu/memphis/%C1.Router/cs/castor  ; name prefix of the neighbor router consists
+                                                ; of network, site-name and router-name
+
+    face-uri  udp://castor.cs.memphis.edu       ; face uri of the face connected to the neighbor
+    link-cost 25                                ; cost of the connecting link to neighbor
+  }
+
+  neighbor
+  {
+    name /ndn/edu/memphis/%C1.Router/cs/mira  ; name prefix of the neighbor router consists
                                               ; of network, site-name and router-name
 
-       face-uri  udp://castor.cs.memphis.edu  ; face uri of the face connected to the neighbor
-       link-cost 25                         ; cost of the connecting link to neighbor
-   }
-
-   neighbor
-   {
-       name /ndn/edu/memphis/%C1.Router/cs/mira          ; name prefix of the neighbor router consists
-                                              ; of network, site-name and router-name
-
-       face-uri  udp://mira.cs.memphis.edu    ; face uri of the face connected to the neighbor
-       link-cost 30                        ; cost of the connecting link to neighbor
-   }
+    face-uri  udp://mira.cs.memphis.edu       ; face uri of the face connected to the neighbor
+    link-cost 30                              ; cost of the connecting link to neighbor
+  }
 }
 
 ; the hyperbolic section contains the configuration settings of enabling a router to calculate
@@ -61,16 +62,16 @@
 
 hyperbolic
 {
-; commands in this section follows a strict order
-; the switch is used to set hyperbolic routing calculation in NLSR
+  ; commands in this section follows a strict order
+  ; the switch is used to set hyperbolic routing calculation in NLSR
 
-    state off             ; default value 'off', set value 'on' to enable hyperbolic routing table
-                           ; calculation which turns link state routing 'off'. set value to 'dry-run"
-                           ; to test hyperbolic routing and compare with link state routing.
+  state off             ; default value 'off', set value 'on' to enable hyperbolic routing table
+                        ; calculation which turns link state routing 'off'. set value to 'dry-run"
+                        ; to test hyperbolic routing and compare with link state routing.
 
 
-    radius   123.456       ; radius of the router in hyperbolic coordinate system
-    angle    1.45          ; angle of the router in hyperbolic coordinate system
+  radius   123.456      ; radius of the router in hyperbolic coordinate system
+  angle    1.45         ; angle of the router in hyperbolic coordinate system
 }
 
 
@@ -78,12 +79,11 @@
 
 fib
 {
-; the max-faces-per-prefix is used to limit the number of faces for each name prefixes
-; by NLSR in ndn FIB
+  ; the max-faces-per-prefix is used to limit the number of faces for each name prefixes
+  ; by NLSR in ndn FIB
 
-    max-faces-per-prefix 3   ; default value 0. Valid value 0-60. By default (value 0) NLSR adds
-                             ; all available faces for each reachable name prefixes in NDN FIB
-
+  max-faces-per-prefix 3   ; default value 0. Valid value 0-60. By default (value 0) NLSR adds
+                           ; all available faces for each reachable name prefixes in NDN FIB
 }
 
 ; the advertising section contains the configuration settings of the name prefixes
@@ -91,11 +91,11 @@
 
 advertising
 {
-; the ndnname is used to advertised name from the router. To advertise each name prefix
-; configure one block of ndnname configuration command for every name prefix.
+  ; the ndnname is used to advertised name from the router. To advertise each name prefix
+  ; configure one block of ndnname configuration command for every name prefix.
 
-    prefix /ndn/edu/memphis/cs/netlab           ; name in ndn URI format
-    prefix /ndn/edu/memphis/sports/basketball
+  prefix /ndn/edu/memphis/cs/netlab           ; name in ndn URI format
+  prefix /ndn/edu/memphis/sports/basketball
 }
 
 security