🔔If you experience any difficulties before or after finalizing your order, please reach out to us through email at support@ciscoforall.com

Cisco IOS Revision Commands

in commands

Show commands – Cisco routers

Show version – software version, config files, boot images, config register, basic config of router
Show ipx interface – status, ipx rip and sap received/sent, ipx access-lists
Show ipx route – ipx routing table
Show ipx servers – server list (name, port, hops, type of service)
Show ipx traffic – number/type of packets, RIP and SAP packets
Show protocol – ipx addresses of an interface, IP addresses and routing protocol
Show ip protocol – routing update times, networks active on, neighbour routers, administrative distances, AS number
Show access-lists – shows standard and extended access-lists on all interfaces
Show access-list 101
Show ip interface – IP addresses, masks, MTU, access-lists, split horizon, ICMP, CDP status, NAT statistics, LMI info, DLCIs
Show interface serial 0 – shows bandwidth, MTU, keepalives
Show ip route – ip routing table
Show cdp neighbor – deviceID, local intf, holdtime, capability, platform, remote portID
Show cdp entry * – IP address of neighbour, protocol info, platform, capability, portID, holdtime, same info as show version, neighbour device ID, local interface
Show cdp neighbor detail – same as above also IP address, version info
Show cdp traffic – info on traffic and errors
Show cdp interface – encapsulation, timer, holdtime for each intf
Show controllers serial 0 – shows DTE/DCE connections, buffer size, collisions, mac address
Show host(s) – shows hostname to IP resolution of hosts
Show session(s) – shows connections to a remote device
Show users – shows connections to your router, port and time connected
Show frame-relay lmi – lmi errors and lmi type
Show frame-relay pvc – all configured PVC’s, DLCI numbers, status of connections, No. of BECN/FECN
Show frame-relay pvc 16
Show frame-relay map – ip to dlci mappings
Show run – display router config (RAM), configured PVCs, ACLs.

Show commands – 1900 switch

Show mac-address-table
Show run
Show ip – like ipconfig
Show port system – shows switching method
Show vtp
Show trunk A allowed-vlans – shows which VLANS allowed on trunk link
Show vlan-membership
Show vlan 2
Show vlan – verify VLAN config
Show history – shows last 10 commands entered by default
Show terminal – shows terminal config + history buffer size

General router commands

Banner exec – for activation or incoming vty
Banner incoming – displayed on reverse telnet sessions
Banner login – displayed on all connected terminals. Displayed before MOTD banner but before login prompts
Bfe – manual emergency mode setting
Clear counters – clears counters on all interfaces
Clear frame-relay-inarp – clears dynamic mappings
Clear line 1 – clears vty 1 connection to a remote router
Clock set 10.30.10 28 may 2002
Config-register 0x2102 – changes config register
Copy flash tftp
Copy tftp flash – copies IOS image from tftp server default directory to router flash
Disable – to get back to user mode from privileged
Disconnect 1 – clears a connection to a remote router
Enable – to get into privileged mode
Enable last-resort – define enable action if no tacas servers respond
Enable use-tacas – tells the router to authenticate passwords through a tacas server
Encapsulation isl 3 – encapsulates ISL frame-tagging for VLAN 3 on an interface
Exec timeout 0 1 – sets console timeout to 1 second
Exec-timeout 0 0 – sets exec timeout to never timeout
Exec-timeout 1 0 – set exec timeout to 1 minute
Ip domain-lookup – enables DNS (use no form to stop this)
Ip domain-name nikmakris.com – appends domain name to hostname (required for DNS)
Ip host nik 172.17.1.63 – adds to host table (up to 8 ip addr)
Ip name-server – sets ip address(es) of DNS servers
Lock – locks the terminal
Logging synchronous – stops console messages overwriting commands
Logout – to logout of the router
Media-type 100BaseX – sets media type
Mrinfo – request neigbour and version information from a multicast router
No login – sets line, vty ports not to prompt for login info
Passive-inteface s0 – disables routing updates on interface (Global command) – they are not sent out this interface but they are still received.
Ping ipx 40.0000.0c8d.5c9d
Service password-encryption – encrypts passwords (Global command)
Terminal monitor – needed to view debug commands from telnet session
Terminal history size 50 – sets command history to 50 lines
Tftp-server system <image name> – Make router a tftp server

Configure commands

Interface Ethernet 2/0/1 – type slot / port adapter / port number (interface) for VIP cards
Config terminal – configures RAM
Config network (config net) – changes a config on a tftp host
Config memory – configure NVRAM
Ip address 172.17.1.63 255.255.255.0 secondary – adds a secondary subnet address to an interface
Clock rate 56000 – sets clock rate to 56kbps for DCE interfaces

Access Lists (ACL)

Access-enable – creates a temporary access-list entry
Access-template – creates a temporary access-list entry
Access-profile – apply user profile to interface

Access-list 1 permit 0.0.0.0 255.255.255.255 – same as next line
Access-list 1 permit any – permits any host
Access-list 1 permit 172.30.16.29 0.0.0.0 – same as next line
Access-list 1 permit host 172.30.16.29 – permits host 172.30.16.29
No access list 1 – deletes access list 1
Ip access-group 1 out (out is default)
Access-list 101 deny tcp 172.16.4.0 0.0.0.255 any eq telnet
Access-list 101 permit ip any any established (TCP connection)
Router(Config)#ip access-list standard nik
Router(Config std-nacl)#deny any log (log – logs packets)

No ip access-group in – won’t delete inbound lists if you leave the in off the end of the command

Frame relay

Router(Config)#int s0
Router(Config-if)#encapsulation frame-relay cisco (default)
Router(Config-if)#exit
Router(Config)#int s0.16 point-to-point
Router(Config-if)#no inverse-arp
Router(Config-if)#ip address 172.17.1.63 255.255.255.0
Router(Config-if)#bandwidth 64 – sets bandwidth to 64kbps (Only used by routing protocols)
Router(Config-if)#frame-relay map ip 172.16.30.17 16 ietf broadcast – broadcast tells the router to send broadcasts out this intf

IGRP Configuration

Router(Config)#router igrp 50
Router(Config-router)#timers basic 15 45 0 60
Router(Config-router)#variance 1-128 (controls load balancing between best and worse metrics)
Router(Config-router)#traffic-share balanced/min
Balanced – share inversely proportional to metrics
Min – use routers that have only min costs
Router(Config-router)#network 128.6.0.0
Router(Config-router)#no metric holddown
Router(Config-router)#metric maximum-hop 50

IPX RIP Configuration

Router(Config)#ipx routing – enables IPX routing, RIP and SAP
Router(Config)#ipx maximum-paths 2 – enables equal cost load balancing over 2 paths
Router(Config)#ipx per-host-load-share – ensures all packets to 1 destination are sent over same line
Router(Config)#int e0
Router(Config-if)#ipx network 10 encapsulation sap secondary – assigns ipx network 10 to a secondary interface on Ethernet 0 with encapsulation Ethernet_802.2
Router(Config-if)#ipx delay 6 – sets tick metric for IPX RIP (LAN = 1, WAN = 6 default)
Router(Config-if)#exit

Cisco ISDN Configuration

Router(Config)#interface bri 0
Router(Config-if)#ip address 172.17.1.63 255.255.255.0
Router(Config-if)#no shutdown
Router(Config-if)#dialer-group 1
Router(Config-if)#dialer map ip 172.16.60.2 name 8042 8350661
(Next router ip – hostname of next route (auth) – number to dial)
Router(Config-if)#dialer load-threshold 2 either – makes both interfaces come up immediately
Router(Config-if)#dialer load-threshold 255 either – only brings up 2nd B-channel if first is 100% loaded
Router(Config-if)#hold-queue 75 in – holds 75 packets in the queue during connection
Router(Config-if)#dialer idle-timeout 300 – sets idle time out (120 default)
Router(Config-if)#encapsulation ppp
Router(Config-if)#exit
Router(Config)#dialer-list 1 list 110
Router(Config)#access-list 110 permit tcp any any eq smtp
Router(Config)#access-list 110 permit tcp any any eq telnet

Static/default routes

Ip route 0.0.0.0 0.0.0.0 172.16.20.1 = default route
Ip default-network 172.16.1.0
Ip route 172.17.1.63 255.255.255.0 serial 1 1 permanent – keeps static route even if router cannot communicate with it, administration distance 1

Cisco Discovery Protocol (CDP) commands

Cdp timer 90
Cdp holdtime 240
Cdp enable (no cdp enable)

1900 Switch Configuration

#config t
(Config)#enable password level 1 nikolas – usermode password
(Config)#enable password level 15 makris – enable password
(Config)#enable secret nik2 – precedes the enable p/w
(Config)#hostname nik
(Config)#vtp pruning enable – enables pruning on whole switch
(Config)#delete vtp – deletes VTP database
(Config)#vtp server (client/transparent)
(Config)#vtp domain nikolas
(Config)#vtp password cisco
(Config)#ip address 172.17.1.63 255.255.255.0
(Config)#ip default-gateway 172.17.1.50
(Config)#switching-mode store-and-forward (fragment-free)
(Config)#vlan 2 name sales
(Config)#vlan 3 name marketing
(Config)#int Ethernet 0/1 – slot 0/port 1
(Config-if)#vlan-membership static 2
(Config-if)#description Finance_VLAN
(Config-if)#port secure max-mac-count 1 – allows only one mac address per port
(Config-if)#exit
(Config)#int f0/26
(Config-if)#trunk on – enables trunking of all VLANS not just VLAN 1
(Config-if)#no trunk-vlan 3 – stops trunking vlan 3
(Config-if)#duplex full – sets to full duplex (auto sense default)
(Config-if)#exit
(Config)#copy tftp://192.168.0.120/cat1900EN_9_00.bin opcode – download into flash memory
(Config)#copy nvram tftp://192.168.0.120/cat1900EN
(Config)#copy tftp://192.168.0.120/cat1900EN nvram
(Config)#delete nvram – deletes config
(Config)#delete vtp – deletes VTP database
(Config)#clear mac-address-table [dynamic]

Cisco Debug commands

Debug ipx routing activity – info on RIP updates
Debug ipx sap – info on sap updates
Debug ip igrp events – what’s being rec’d sent, route type (int/ext,system), source, dest
Debug ip igrp transactions – shows contents of routing updates
Debug ip rip – source/contents of updates, network, metrics
Debug frame-relay lmi – enables verification of connection
Debug ppp authentication
UNDEBUG ALL

Download Telnet Commands 

Your purchase with Ciscoforall is safe and fast.

Your Learning Solution will be available for immediate download after your payment has been received.

comodo_secure_seal_113x59_transpnorton_vsign

Cart (0)

  • Your cart is empty.