Router IP assignment
(config
terminal) interface Fastethernet0/1;
(config
if) ip address 192.168.1.1
255.255.255.0;
no
shutdown
Switch IP assignment
is on VLAN 1 (this is a Switch Virtual Interface SVI) -
(config
terminal)Interface VLAN 1;
(config
if) ip address 192.168.1.10
255.255.255.0
(config
if) no shutdown (not necessary on a
switch but a good habit)
(config
t) ip default-gateway 192.168.1.1 (is
the switch need connectivity to and from other networks)
(config
t) hostname SW1
(Config
t) interface FastEthernet 0/1
(config
if) description Port to Router1
(config
if) speed 100 (do these for critical links between routers, SW's, & servers)
(config
if) duplex full (half) (both of these must match on both sides of
the link)
Common commands
Show
running-config
Show
ip interface brief ( lists all interfaces on device)
Show
run interface FastEthernet 0/1 (only
show running-config on the interface)
Show
interface FastEthernet 0/1
(shows MAC, packet totals, errors)
Show
version
CDP (Cisco
Discovery Protocol - Cisco proprietary, layer 2 protocol for only Cisco devices and software, it's enable by default but could be seen as a security concern )
Show
cdp (shows if CDP is enable)
Show
cdp neighbors (show brief output of
devices)
Show
cdp neighbors detail (detailed output)
(config
t) cdp run (this enables cdp, but it
is on by default)
(config
t) no cdp run (disables cdp globally)
(config
if) no cdp enable (just turns it off on
this interface)
LLDP - Link Layer
Discovery Protocol - open standard, but is not available on older devices
Show
lldp (show if llcp is enabled)
Show
lldp neighbors (sh brief output of devices)
Show
lldp neightbors detail (detailed output)
(config
t) lldp run
(config
t) no lldp run (turns off globally)
(config
if) no lldp transmit (interface off
to transmit lldp info to other devices)
(config
if) no lldp receive (interface off
to receive lldp info from other devices)
No comments:
Post a Comment