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--- wiki:site:cisco:trunk:start [2018/01/16 11:10]
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+++ wiki:site:cisco:trunk:start [2018/01/16 11:21] (current)
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@@ Line 29: / Line 29: @@
     * 1-bit CFI (Canonical Format Indicator) - určuje zda se jedná o Ethernet nebo TokenRing. Nazývá se též //little-endian, big-endian format//
     * 12-bitů VID (VLAN Identifier) 0-4095 (0,1 a 4095 rezervovány)
+===== Konfigurace trunku ISL / dot1q =====
+>Switch(config)# **interface** //type mod/port//
+>Switch(config-if)# **switchport**
+>Switch(config-if)# **switchport mode trunk**
+>Switch(config-if)# **switchport trunk encapsulation {isl | dot1q | negotiate}**
+>Switch(config-if)# **switchport nonnegotiate**
+>Switch(config-if)# **switchport trunk native vlan** //vlan-id//
+>Switch(config-if)# **switchport trunk allowed vlan** {//vlan-list// | **all** | {**add** | **except** | **remove**} //vlan-list//}
+Vypnuti trunku:
+>Switch(config-if)#no switchport mode trunk
+nebo:
+>Switch(config-if)#switchport mode access
+>Switch# **show running-config**
+>Switch# **show interface** //type mod/port//
+>Switch# **show vlan id** //vlan-id//
+>Switch# **show interfaces fastethernet 0/1 trunk**
+<code>
+Port    Mode      Encapsulation  Status    Native vlan
+Fa0/1  desirable  n-802.1q       trunking   1
+Port   Vlans allowed on trunk
+Fa0/1  1-150
+<further output omitted>
+</code>
 ====== DTP - Dynamic Trunking Protocol (Cisco) ======
@@ Line 34: / Line 62: @@
   * Switche musí být ve stejné VTP doméně (nebo NULL doméně, VTP domain není nakonfigurována)
   * Ve všech režimech DTP posílá zprávy každých 30s.
+  * mode auto-auto nefunguje, na jedné straně musí být desirable!
 >SW(config)# **interface** //type mod/port//
@@ Line 42: / Line 71: @@
 >Switch(config-if)# **switchport nonegotiate**
-===== Konfigurace =====
+>Switch# **show running-config**
+>Switch# **show dtp** [**interface** //type mod/num//]
->SW(config)# interface fa0/port_number
->SW(config-if)# switchport mode trunk
->SW(config-if)# switchport trunk encapsulation {dot1q | isl | negotiate}
->SW(config-if)# switchport mode dynamic {desirable | auto}
->SW(config-if)# dot1q native vlan vlan-id
-Vypnuti trunku:
->Switch(config-if)#no switchport mode trunk
-nebo:
->Switch(config-if)#switchport mode access
->Switch# **show interfaces fastethernet 0/1 trunk**
-<code>
-Port    Mode      Encapsulation  Status    Native vlan
-Fa0/1  desirable  n-802.1q       trunking   1
-Port   Vlans allowed on trunk
-Fa0/1  1-150
-<further output omitted>
-</code>

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