| Question |
Answer |
| Set STP Bridge ID |
spanning-tree vlan 1 priority 4096 |
| Set STP Bridge ID to default |
spanning-tree vlan 1 priority |
| "Display STP root ID |
Bridge ID |
| Display STP Summary |
show spanning-tree summary |
| Display STP Root Bridge status and config |
show spanning-tree rooot |
| Display STP Detail |
sh spanning-tree detail |
| Display STP interface stats and config |
sh spanning-tree interface |
| Display STP blocked ports |
sh spanning-tree blockedports |
| Create a VLAN |
(config) vlan 456 |
| Name a VLAN |
name vlan for engineering |
| Assign a port to a VLAN |
switchport access vlan 456 |
| Assign a range of ports to a VLAN |
interface range fa0/(start) - (end) |
| Display a list of VLANs |
sh vlan |
| Display a brief list of VLANs |
sh vlan brief |
| Display a specific VLAN by number |
sh vlan id 456 |
| Display a specific VLAN by name |
sh vlan name engineering |
| Delete a VLAN |
(config) no vlan 456 |
| Disassociate a port from a specific VLAN |
(config-if) no switchport access vlan 456 |
| Configure a port as trunk |
(config-if) switchport mode trunk |
| Configure a trunk port encapsulation |
"(config-if) switchport trunk encapsulation dot1q (isl |
| Configure a port as access |
(config-if) switchport mode access |
| Configure a port automatically for trunk/access |
(config-if) switchport mode dynamic (desirable/auto) |
| Assign native VLAN ID to a trunk |
(config-if) dot1q native vlan 456 |
| OSPF Config Mode |
router ospf 1 |
| OSPF Network Command |
network x.x.x.x w.w.w.w area 0 |
| Standard ACL |
access-list [num] permit host h.h.h.h |
| Extended ACL |
access-list [num] deny tcp h.h.h.h w.w.w.w d.d.d.d w.w.w.w eq telnet |
| ACL with Remark |
access-list [num] remark TEXT STRING |
| List ACLs |
sh access-lists [num] |
| List ACLs on interfaces |
sh ip interface |
| Creating a NACL |
ip access-list extended SALES-ONLY |
| Add an ACL to a VTY line |
access-class [num] in |
| ACL for established traffic |
access-list 101 permit tcp any any established |
| logging ACL |
[ACL STATEMENT] log |
| Specifying a syslog server |
logging 193.168.3.11 |
| set time zone |
clock timezone CST -6 |
| set clock |
clock set 10:25:00 Sep 10 2007 |
| Static NAT step 1 |
ip nat pool public_access 209.165.200.242 209.165.200.253 netmask 255.255.255.224 |
| Static NAT step 2 |
access-list 1 permit 10.10.10.0 0.0.0.255 |
| Static NAT step 3 |
ip nat inside source list 1 pool public_access |
| Static NAT step 4 |
assign inside and outside NATs to interfaces |
| Static NAT map |
ip nat inside source static 10.10.10.2 209.165.200.225 |
| Floating Static Route |
ip route 192.168.4.0 255.255.255.0 192.168.9.1 200 |
| Turn off routing updates on a interface |
(conf-if) passive-interface |
| turn on RIP debugging |
debug ip rip |
| set up EIGRP |
(config) router eigrp 1 |
| Displays successors and feasible in EIGRP |
sh ip eigrp toplogy |
| Displays number of EIGRP packets |
sh ip eigrp traffic |
| Displays feasible successor activity |
debug eigrp fsm |
| Summarize EIGRP network |
ip summary-address eigrp 75 10.10.10.0 255.255.0.0 |
| Turn on PPP |
(config-if) encapsulation ppp |
| Turn on PPP Compression |
(config-if) compress [predictor | stac] |
| Turn on PPP load balancing |
(config-if) ppp multilink |
| HDLC PPP state of interfaces |
show controllers |
| HDLC PPP keep alive packets |
debug serial interface |
| PPP process debug |
debug ppp |
| VTP Setup #1 |
(config) vtp domain domain_name |
| VTP Setup #2 |
(config) vtp mode {server | client | transparent} |
| VTP Setup #3 |
(config) vtp password password |
| RIPv2 propagate default route |
(config-router) redistribute static |
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