diff --git a/notes/.obsidian/app.json b/notes/.obsidian/app.json
index 337aa7f..a86dffd 100644
--- a/notes/.obsidian/app.json
+++ b/notes/.obsidian/app.json
@@ -11,5 +11,6 @@
     "cs"
   ],
   "spellcheck": true,
-  "showInlineTitle": false
+  "showInlineTitle": false,
+  "showLineNumber": false
 }
\ No newline at end of file
diff --git a/notes/.obsidian/plugins/obsidian-activity-history/data.json b/notes/.obsidian/plugins/obsidian-activity-history/data.json
index 0e2b340..60eece7 100644
--- a/notes/.obsidian/plugins/obsidian-activity-history/data.json
+++ b/notes/.obsidian/plugins/obsidian-activity-history/data.json
@@ -13,7 +13,7 @@
     {
       "path": "/",
       "date": "2022-11-24",
-      "size": 935255
+      "size": 937478
     }
   ],
   "activityHistory": [
@@ -926,7 +926,7 @@
         },
         {
           "date": "2022-11-24",
-          "value": 3201
+          "value": 5424
         }
       ]
     }
diff --git a/notes/.obsidian/plugins/various-complements/data.json b/notes/.obsidian/plugins/various-complements/data.json
index db62ee2..6195fc6 100644
--- a/notes/.obsidian/plugins/various-complements/data.json
+++ b/notes/.obsidian/plugins/various-complements/data.json
@@ -302,6 +302,34 @@
           "lastUpdated": 1669199405571
         }
       }
+    },
+    "EtherChannel": {
+      "EtherChannel": {
+        "internalLink": {
+          "count": 1,
+          "lastUpdated": 1669309232254
+        },
+        "currentFile": {
+          "count": 2,
+          "lastUpdated": 1669309797225
+        }
+      }
+    },
+    "moderní": {
+      "moderní": {
+        "internalLink": {
+          "count": 1,
+          "lastUpdated": 1669309782046
+        }
+      }
+    },
+    "Desirable": {
+      "Desirable": {
+        "currentFile": {
+          "count": 1,
+          "lastUpdated": 1669309866833
+        }
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/notes/.obsidian/workspace.json b/notes/.obsidian/workspace.json
index ac8f420..2fdb096 100644
--- a/notes/.obsidian/workspace.json
+++ b/notes/.obsidian/workspace.json
@@ -4,20 +4,75 @@
     "type": "split",
     "children": [
       {
-        "id": "b9c2bc58accbe4b0",
+        "id": "ff9bf127de8a5639",
         "type": "tabs",
+        "dimension": 88.63636363636364,
         "children": [
           {
-            "id": "a257ab9f498baece",
+            "id": "359b9500ac271bb2",
             "type": "leaf",
             "state": {
               "type": "markdown",
               "state": {
-                "file": "ONA/Úvaha - Rasismus.md",
+                "file": "psi/CCNA2/vlan.md",
                 "mode": "source",
                 "source": false
               }
             }
+          },
+          {
+            "id": "ce4e4d89a8ec0eb2",
+            "type": "leaf",
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "psi/CCNA2/Spanning Tree Protocol.md",
+                "mode": "source",
+                "source": false
+              }
+            }
+          },
+          {
+            "id": "1276d0e9da6b1165",
+            "type": "leaf",
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "psi/CCNA2/EtherChannel.md",
+                "mode": "source",
+                "source": false
+              }
+            }
+          },
+          {
+            "id": "3b5e644b62c08f26",
+            "type": "leaf",
+            "state": {
+              "type": "markdown",
+              "state": {
+                "file": "psi/CCNA2/DHCP.md",
+                "mode": "source",
+                "source": false
+              }
+            }
+          }
+        ],
+        "currentTab": 2
+      },
+      {
+        "id": "a7f8eb5df0ec8b2c",
+        "type": "tabs",
+        "dimension": 11.363636363636363,
+        "children": [
+          {
+            "id": "f4405a69e9bff7f3",
+            "type": "leaf",
+            "state": {
+              "type": "outline",
+              "state": {
+                "file": "psi/CCNA2/EtherChannel.md"
+              }
+            }
           }
         ]
       }
@@ -77,7 +132,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "ONA/Úvaha - Rasismus.md",
+                "file": "psi/CCNA2/EtherChannel.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -94,7 +149,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "ONA/Úvaha - Rasismus.md",
+                "file": "psi/CCNA2/EtherChannel.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -141,7 +196,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "ONA/Úvaha - Rasismus.md"
+                "file": "psi/CCNA2/EtherChannel.md"
               }
             }
           },
@@ -193,17 +248,17 @@
     "width": 300,
     "collapsed": true
   },
-  "active": "a257ab9f498baece",
+  "active": "1276d0e9da6b1165",
   "lastOpenFiles": [
+    "psi/CCNA2/DHCP.md",
+    "psi/CCNA2/EtherChannel.md",
+    "psi/CCNA2/Spanning Tree Protocol.md",
+    "psi/CCNA2/vlan.md",
+    "psi/psi.md",
+    "ONA/Úvaha - Rasismus.md",
     "ONA/ONA.md",
     "mat/mat.md",
     "mat/Funkce/Untitled.md",
-    "mat/Funkce/Logaritmus.md",
-    "dej/moderní/komunismus/Vylodění v zátoce Sviní.md",
-    "dej/moderní/komunismus/Karibská krize.md",
-    "dej/moderní/komunismus/Expo 58.md",
-    "dej/dej.md",
-    "cjl/cjl.md",
-    "cjl/literatura/slohy/Klasicismus/Klasicismus a osvícení.md"
+    "mat/Funkce/Logaritmus.md"
   ]
 }
\ No newline at end of file
diff --git a/notes/data/Pasted image 20221124180130.png b/notes/data/Pasted image 20221124180130.png
new file mode 100644
index 0000000..bd39407
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diff --git a/notes/data/Pasted image 20221124181111.png b/notes/data/Pasted image 20221124181111.png
new file mode 100644
index 0000000..6476a7d
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diff --git a/notes/data/Pasted image 20221124181810.png b/notes/data/Pasted image 20221124181810.png
new file mode 100644
index 0000000..5a53fc4
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diff --git a/notes/data/Pasted image 20221124183300.png b/notes/data/Pasted image 20221124183300.png
new file mode 100644
index 0000000..59ba04f
Binary files /dev/null and b/notes/data/Pasted image 20221124183300.png differ
diff --git a/notes/psi/CCNA2/CCNA2.md b/notes/psi/CCNA2/CCNA2.md
new file mode 100644
index 0000000..33188e7
--- /dev/null
+++ b/notes/psi/CCNA2/CCNA2.md
@@ -0,0 +1,6 @@
+%% Zoottelkeeper: Beginning of the autogenerated index file list  %%
+-  [[psi/CCNA2/DHCP|DHCP]]
+-  [[psi/CCNA2/EtherChannel|EtherChannel]]
+-  [[psi/CCNA2/Spanning Tree Protocol|Spanning Tree Protocol]]
+-  [[psi/CCNA2/vlan|vlan]]
+%% Zoottelkeeper: End of the autogenerated index file list  %%
diff --git a/notes/psi/CCNA2/DHCP.md b/notes/psi/CCNA2/DHCP.md
new file mode 100644
index 0000000..840cd86
--- /dev/null
+++ b/notes/psi/CCNA2/DHCP.md
@@ -0,0 +1,24 @@
+# DHCP
+
+jde jak na switch tak na router. Na větších sítích se použije Radius a pod.
+
+`ip dhcp excluded-address {low-address} [high-address]`
+`(config)#ip dhcp pool {pool-name}`
+
+`(dhcp-config)#`
+`network {network-number} [mask| / prefix-length]`
+`default-router {address} [address2..8]`
+`dns-server {address} [address2..8]`
+`domain-name {domain}`
+`lease {days [hours [minutes]] | infinite}`
+`netbios-name-server {address} [address2..8]`
+
+V podstatě jenom network a default-router je třeba.
+
+## Příklad
+
+![](Pasted%20image%2020221124183300.png)
+
+## Klient
+
+`(config-if)# ip address dhcp`
diff --git a/notes/psi/CCNA2/EtherChannel.md b/notes/psi/CCNA2/EtherChannel.md
new file mode 100644
index 0000000..7b6200c
--- /dev/null
+++ b/notes/psi/CCNA2/EtherChannel.md
@@ -0,0 +1,38 @@
+# EtherChannel
+
+- propojení switchů přes několik linek (drátů), zvýší spolehlivost a rychlost
+- musí být stejná rychlost, technologie, vlan
+- až 8 linek
+- nelze mixovat rychlosti ani technologie (Fast Ethernet a Gigabit nejde mixovat, ani ostatní)
+- defaultně [Spanning Tree Protocol](Spanning%20Tree%20Protocol.md) vypne kabel, musí se proto nastavit EtherChannel. 
+- konfiguruje se přes jeden interface, zařídí jednotnou konfiguraci mezi více fyzickýma interface.
+
+## PAgP
+
+- zajišťuje automatické nastavení rychlosti, STP a kontroluje že linka funguje.
+- posílá pakety každých 30 vteřin
+- cisco proprietární
+
+### Mode
+
+- **on** - manuální nastavení EtherChannel 
+- **Desirable** - Automatické nastavení přes PAgP
+- **Auto** - Automatické nastavení přes PAgP, ale nezačne komunikaci (druhý switch musí být na **Desirable**)
+![](Pasted%20image%2020221124181111.png)
+
+## LACP
+
+Standardizovaná verze PAgP, v rámci IEEE 802.3ad.
+
+## Konfigurace
+
+### Setup
+`s1(config)# interface range FastEthernet 0/1 - 2`
+`s1(config-if-range)# channel-group 1 mode active`
+
+### Info
+`#show etherchannel summary`
+`#show run | begin interface port-channel`
+![](Pasted%20image%2020221124181810.png)
+## Značení
+![](Pasted%20image%2020221124180130.png)
\ No newline at end of file
diff --git a/notes/psi/CCNA2/Spanning Tree Protocol.md b/notes/psi/CCNA2/Spanning Tree Protocol.md
new file mode 100644
index 0000000..aed8426
--- /dev/null
+++ b/notes/psi/CCNA2/Spanning Tree Protocol.md	
@@ -0,0 +1,4 @@
+---
+aliases: [STP]
+---
+# Spanning Tree Protocol
diff --git a/notes/psi/vlan.md b/notes/psi/CCNA2/vlan.md
similarity index 100%
rename from notes/psi/vlan.md
rename to notes/psi/CCNA2/vlan.md
diff --git a/notes/psi/psi.md b/notes/psi/psi.md
index 3468c41..8ba6e03 100644
--- a/notes/psi/psi.md
+++ b/notes/psi/psi.md
@@ -12,12 +12,12 @@ imagePrefix: 'data/'
 %% Zoottelkeeper: Beginning of the autogenerated index file list  %%
 -  [[psi/Adresace|Adresace]]
 -  [[psi/CCNA1 Final PTSA|CCNA1 Final PTSA]]
+-  [[psi/CCNA2/CCNA2|CCNA2]]
 -  [[psi/Data Center Tier|Data Center Tier]]
 -  [[psi/DHCP|DHCP]]
 -  [[psi/IPv6|IPv6]]
 -  [[psi/Sítě|Sítě]]
 -  [[psi/Switch|Switch]]
--  [[psi/vlan|vlan]]
 -  [[psi/Základní konfigurace|Základní konfigurace]]
 -  [[psi/Základy komunikace|Základy komunikace]]
 %% Zoottelkeeper: End of the autogenerated index file list  %%