Saving the configuration will make sure that your settings are the same when you open up your next session. ctrl-n or dn-arrow (if you have gone back in command history, this moves forward) backspace-key (erase the character to the left of the current cursor position) ctrl-z or end (go out to privilege mode) exit (move back one level in the hierarchical command structure) ctrl-c (cancel current command or leave Setup mode if you accidentally get into it) Sets the VLAN that the interface belongs to. the configuration file can list a maximum of three server addresses.. To add name servers to the configuration, use the ip name-server command. During the principal switch selection phase, the switch with the highest priority becomes the principal switch. Almost all Cisco devices use Cisco IOS to operate and Cisco CLI to be managed. Modifications from this point on are made to the pending configuration and remain there until you commit the changes to the active configuration (and other switches in the fabric) or discard them. This is a default command. To solve this problem you can select a virtual LAN(VLAN) on the switch and create a virtual interface with an IP address. Configure SSH-RSA keys for user and server authentication. The typical Cisco switch is ready to go out-of-the-box. A switch may have different domain IDs in different VSANs. While the static option can be applied at runtime after a disruptive or non-disruptive restart, the preferred option is applied at runtime only after a disruptive restart (see the "About Domain Restart" section). Cisco switch by default have a host name "switch". Cyber-criminals often use unsecured ports as a way to breach a network. For more information about CFS, see Chapter6, "Using the CFS Infrastructure.". If you want to prevent non-SSH connections, add the transport input ssh command under the lines to limit the router to SSH connections only. Learn how your comment data is processed. Authentication can be with a local username and password or with an authentication, authorization, and accounting (AAA) server that runs TACACS+ or RADIUS. The domain name for a DHCP client places the client in the general grouping of networks that make up the domain. Both values can be specified in a single command to allow both Telnet and SSH access (default settings). If there are any problems, here are some of our suggestions Top Results For Cisco Switch Username Command Updated 1 hour ago An optional parameter is added to set the administrative distance to 150), R1(config)# ip route 47.151.2.0 255.255.255.0 172.24.2.11 (to get to network 47.151.2.0/24, go to next-hop address of 172.24.2.11), R1(config)# ip route 47.151.2.0 255.255.255.0 serial0/1 (to get to network 47.151.2.0/24, go out serial 0/1), R1(config)# ip route 47.151.2.0 255.255.255.0 192.168.12.2 fastethernet0/0 (to get to network 47.151.2.0/24, go to the next-hop 192.168.12.2 out Fastethernet0/0; on Ethernet both are needed), R1(config)# no router rip (remove all RIP configurations and routing table entries), R1(config)# router rip (enter rip configuration commands), R1(config-router)# network 192.168.10.0 (define which directly connected network(s) to include in RIP update processes. If you are attempting to resolve a domain ID conflict, you must manually assign domain IDs. Syntax Router (config)#ip domain-lookup As a Cisco device, your switch will have the communication protocol NetFlow. The next time you reboot the switch, the saved configuration is used. Command IP Domain-name Use This command allows you to set a domain name for the router. Furthermore, you can find the "Troubleshooting Login Issues" section which can answer your unresolved problems and equip you with a . To disable or reenable fcdomains in a single VSAN or a range of VSANs, follow these steps: Disables the fcdomain configuration in VSAN 7 through 200. Reverts to the factory default of allowing domain IDs from 1 through 239 in VSAN 5. **FR Point-to-Point with sub-interface; Sample Configuration 2: R1(config-if)# no ip address (no IP address on the main interface), R1(config-if)# interface serial 0/0/0.752 point-to-point (sub-int # is customarily DLCI #), R1(config-subif)# ip address 192.168.5.1 255.255.255.252 (typically /30), R1(config-subif)# frame-relay interface-dlci 752 (DLCI=752, next hop and broadcast are dynamically assigned). To purge persistent FC IDs, follow this step: Purges all dynamic and unused FC IDs in VSAN 4. -Dynamic NAT may use a pool of outside addresses. This is an example configuration. Note The contiguous-allocation option takes immediate effect at runtime. View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone, View on Kindle device or Kindle app on multiple devices. In this step-by-step guide, we walk you through configuring Cisco switches and look at some FAQs. This cause a lot of delay for user. This section describes how to configure domain IDs and includes the following topics: Specifying Static or Preferred Domain IDs, About CFS Distribution of Allowed Domain ID Lists, Enabling Contiguous Domain ID Assignments. MySwitch (config-if)#exit. vsan 7 - 10. Go to CLI tab in the popup window. You can configure the rcf-reject option on a per-interface, per-VSAN basis. vsan 81-83. Figure17-1 Sample fcdomain Configuration. Configures the switch in VSAN 8 to request a preferred domain ID 3 and accepts any value assigned by the principal switch. Example17-9 Displays Address Allocation Information. Tip If you configure an allowed list on one switch in the fabric, we recommend you configure the same list in all other switches in the fabric to ensure consistency or use CFS to distribute the configuration. Most people disable this command as it can be a frequent annoyance to those who mistype words on a regular basis. switch(config)# no fcdomain 33:e8:00:05:30:00:16:df fcid 0x070128. 2. Allowed domain ID list configuration distribution, Chapter6, "Using the CFS Infrastructure. In this example only SSH access to the 10.10.10.0 255.255.255.0 subnet is permitted, any other is denied access. In the cache content, VSAN refers to the VSAN that contains the device, WWN refers to the device that owned the FC IDs, and mask refers to a single or entire area of FC IDs. This scheme takes precedence over FC ID persistence in FICON VSANs. Switches can take incoming/outgoing traffic and pass it onward toward its final destination. 07:24 AM, Taken fully fromhttp://nusdsmhs.ss4.sharpschool.com/UserFiles/Servers/Server_41705/Image/CCNA%20IOS%20Commands%20Summary%2010-1-14.pdf, show ip interface brief (display interface designations, IP address and status), show vlan brief (on switch - show what VLANs exist, names, ports assigned ), show controllers serial x/x/x (see if DCE or DTE connected and if clockrate is present), show interface trunk (what ports are trunking, native vlan, allowed vlans), show running-config (display the running configuration - active), show startup-config (display the startup configuration), show ip protocol (what routing protocol, which networks, passive interfaces, neighbors), show cdp neighbors (see directly connected Cisco devices), show cdp neighbors detail (includes IP address at other end), show cdp interface (which interfaces are running CDP), show interface serial x/x/x (what encapsulation, IP address, counters), show interface fastethernet x/x switchport (configured mode and operating mode), show version (which IOS, capability, memory, configuration-register), show run | begin interface (will start listing at the first instance of interface), show ip route connected (show routing table entries for directly connected networks), show ip route static (show routing table entries for static routes), show ip route ospf (show routing table entries learned through OSPF), show ip route eigrp (show routing table entries learned through EIGRP), show mac-address-table or show mac address-table (varies with different IOS), show flash (display filenames and directories in Flash memory), show clock (current date/time in this device), show ipv6 ??? First test the authentication without SSH to make sure that authentication works with the router Carter before you add SSH. The first step is to name the flow exporter: Switch# flow exporter Comparitechexport. If you perform a disruptive restart, reconfigure fabric (RCF) frames are sent to other switches in the fabric and data traffic is disrupted on all the switches in the VSAN (including remotely segmented ISLs). Configuring a Cisco switch properly means your network can make connections efficiently. Step7 Verify the pWWN ID of the HBA using the show flogi database command. , the username and password must match the sent-username and password from other router. Enable mode command that displays the state of system logging (syslog) and the contents of the standard system logging buffer. You can also specify the unused option to view only persistent FC IDs that are still not in use. show ip sshDisplays the version and configuration data for SSH. Tip The pending changes are only available in the volatile directory and are discarded if the switch is restarted. Dynamic: Map entry was created through inverse-ARP. To remove a deny condition from an ACL, use thenoform of this command. You can nondisruptively reconfigure the fcdomain by changing the configured domains on the overlapping links and getting rid of the domain overlap. Thanks. Note: Switches will not change their domain automatically if they already are in a VTP domain. Switches dont come with an IP address by default, meaning that you cant connect to it with Telnet or SSH. To learn more, please Also, after RSA keys are deleted, you cannot use certificates or the CA or participate in certificate exchanges with other IP Security (IPSec) peers unless you regenerate the RSA keys to reconfigure CA interoperability, get the CA certificate, and request your own certificate again. When you assign a static domain ID type, you are requesting a particular domain ID. Configures a priority of 25 for the local switch in VSAN 99. switch(config)# no fcdomain priority 25 VSAN 99. **Multi-Point no sub-interface; Sample Configuration 3: R1(config-if)# ip address 192.168.5.1 255.255.255.248 (not /30), R1(config-if)# frame-relay map ip 192.168.5.3 339 broadcast [ietf, cisco] (192.168.5.3 is next hop, DLCI=339, broadcast is optional, PVC=IEFT is optional cisco is default). All server addresses support multiple VRFs . (This step is optional.). You can display the pending configuration changes using the show fcdomain pending command. Note Due to differences in Arbitrated Loop Physical Address (ALPA) support on devices, FC ID persistency for loop-attached devices is not guaranteed. You can configure NetFlow by completing the four steps below. To start configuration, you want to connect the switch console to PuTTY. Configures the VLAN membership mode of a port. EtherChannel uses a load-balancing algorithm based on selected type or criteria: SW1(config)# port-channel load-balance TYPE, S1(config)# spanning-tree mode pvst (configure for PVST Default), S1(config)# spanning-tree mode rapid-pvst (configure this switch for rapid PVST), S1(config)# spanning-tree vlan 10,20 root primary (make root bridge for these VLANs), S1(config)# spanning-tree vlan 10 root secondary (make secondary root bridge for VLAN), S1(config)# spanning-tree vlan 10 priority 8192 (set the BID priority to 8192 in this VLAN), S1(config)# spanning-tree portfast default (default Portfast on all interfaces in this switch), S1(config)# interface range fa0/10 20 (must be configured as Access ports for Portfast), S1(config-if)# spanning-tree portfast (set interfaces for Portfast), S1(config-if)# spanning-tree bpduguard enable (disables interface if it receives a BPDU), S1(config)# interface fa0/1 (select a port to set STP port priority), S1(config-if)# spanning-tree vlan 10 port-priority 16 (set port priority to 16; default is 128), S1# show spanning-tree (see spanning-tree status on a VLAN-by-VLAN basis), S1# show spanning-tree vlan 10 (see detail spanning-tree information for VLAN 10), S1# show spanning-tree summary (among other things, see if this is the root bridge), S1# show spanning-tree blockedports (see which ports are in STP blocking status), S1# show spanning-tree root (see which BID is root on a VLAN-by-VLAN basis), Hot Standby Routing Protocol (HSRP) for IPv4, R1(config)# standby version 2 (use the same version at each end), R1(config-if)# standby [optional group#] ip [optional IP-ADDRESS] [optional secondary], R1(config-if)# standby [optional group#] priority NUMBER [optional preempt], Set a higher priority (default 100) to make this router the primary in HSRP, Preempt will make this router the active one if it had been down and comes back up, Hot Standby Routing Protocol (HSRP) for IPv6, R1(config-if)# standby version 2 (use the same version at each end), R1(config-if)# standby GROUP# ipv6 autoconfig (create virtual IPv6 Link-Local address), R1(config-if)# standby GROUP# ipv6 2001:CAFE:ACAD:4::1/64 (set virtual shared IP), R1(config-if)# standby GROUP# priority NUMBER [optional preempt], R1# show standby (verify the configuration), R1(config)# service password-encryption (encrypt all passwords (except secret), R1(config)# security password min-length 8 (set minimum 8 character passwords), R1(config)# login block-for 120 attempts 3 within 60 (block for 2 minutes if more than 3 failed logins within 60 seconds), Router(config)# hostname R1 (must change the name of the device from the default), R1(config)# username Bob password Let-me-in! B. A configuration mode command that denes the password required when using the, A configuration mode command that sets this Cisco device password that is required for any user to enter enable mode, A configuration mode command that directs the Cisco IOS software to encrypt the passwords, CHAP secrets, and similar data saved in its configuration file, A configuration mode command that creates and stores (in a hidden location in ash memory) the keys that are required by SSH. (remark makes no configuration changes), For Switch Management Interface Configuration, S1(config)# interface vlan 1 (create a virtual host on the switch), S1(config-if)# description Management interface for this switch (optional description), S1(config-if)# ip address 192.168.100.50 255.255.255.0 (assign an IP address), S1(config-if)# exit (leave interface config and return to global config), S1(config)# ip default-gateway 192.168.100.1 (must be on same subnet as Mgt interface), S1(config)# enable secret class (must have an enable password for remote config), S1(config)# line vty 0 15 (switches may have 16 VTY connections at once), S1(config-line)# password cisco (must set a login password for telnet to be possible), S1(config-line)# login (tell the VTY ports to ask for password from remote user), S1(config-line)# transport input telnet (allows only telnet for remote config default), R1(config)# interface INTERFACE-TYPE (enter configuration mode for an interface), R1(config-if)# ip address ADDRESS SNM (assign the IP Address and subnet mask), R1(config-if)# description WORDS (document what this interface is used for), R1(config-if)# clock rate CLOCK (on serial DCE interfaces, set the speed of the link), R1(config-if)# bandwidth VALUE (used by the routing protocol for the speed of the link), R1(config-if)# no shutdown (turn the interface on), R1(config-if)# shutdown (turn the interface off), R1(config)# ipv6 unicast-routing (activate IPv6 routing off by default), R1(config-if)# ipv6 enable (turn on ipv6 in this interface), R1(config-if)# ipv6 address 3ffe:b00:c18:1::3 /64 (manually enter complete address), R1(config-if)# ipv6 address 3ffe:b00:c18:1:: /64 eui-64 (auto configure host portion), R1(config-if)# ipv6 address fe80::4 link-local (configure link-local address), S1(config)# ip routing (activate IPv4 routing within the switch), S1(config)# ipv6 routing (activate IPv6 routing within the switch), S1(config-if)# no switchport (used to designate that this is a router port, not a switchport), S1(config-if)# switchport trunk encapsulation dot1q (to configure trunking for dot1Q), S1(config)# vlan 10 (create VLAN 10 in the VLAN.DAT database), S1(config-vlan)# name Management (optionally name the VLAN), S1(config)# interface fa0/12 (select a port on the switch) --or--, S1(config)# interface range fa0/12 20 (select a range of ports to be configured the same), S1(config-if)# switchport mode access (set the port to Access mode), S1(config-if)# switchport access vlan 10 (assign this port(s) to VLAN 10), S1(config)# interface gi1/1 (select port for trunking), S1(config-if)# switchport trunk encapsulation dot1q (NOTE: on Layer 3 switch only), S1(config-if)# switchport mode trunk (set the port to be in trunk mode), S1(config-if)# switchport trunk native vlan 99 (set VLAN 99 to carry native traffic), S1(config-if)# switchport trunk allowed vlan 1,10,20,99 (optional, dont forget to include VLAN 1 and the native VLAN), R1(config)# interface Fa0/0 (select the main interface), R1(config-if)# no ip address (there should not be any IP Address on the main interface), R1(config-if)# interface Fa0/0.10 (create a sub-interface the number can be anything), R1(config-if)# encapsulation dot1q 10 (use 802.1Q trunking; assign to this VLAN #), R1(config-if)# ip address 172.16.10.1 255.255.255.255 (define the default-gateway IP), R1(config-if)# interface Fa0/0.99 (create another sub-interface - this one for native traffic), R1(config-if)# encapsulation dot1q 99 native (802.1Q trunking; VLAN #; and native), (NOTE: No IP address unless workstations or management interfaces are on this VLAN), R1(config)# ip classless (classless routing behavior default in IOS 11.3+), R1(config)# no ip classless (classful routing behavior), VLAN Trunking Protocol (VTP) Configuration, S1(config)# vtp mode server (configure this switch to be in server mode) --or--, S1(config)# vtp mode client (configure this switch to be in client mode) ---or--, S1(config)# vtp mode transparent (configure this switch in transparent mode - Suggested), S1(config)# vtp domain NAME (change the VTP domain name of this switch to NAME), S1(config)# vtp password PASSWORD (change the VTP password for this switch), S1(config)# vtp pruning (activate VTP pruning Not supported in Packet Tracer), S1(config)# vtp version 2 (change the VTP version to 2), S1# show vtp status (see VTP mode, revision, version, domain name, pruning mode, etc), S1# show vtp password (only way to see the VTP password does not show in status). The hostname is used in prompts and default configuration filenames. -There are two basic types of Frame-Relay configuration: Point-to-Point and Multi-Point. Configure IP Addresses With Telnet Access, 6. The valid range to set the priority is between 1 and 254. In router configuration mode, sets only that interface to passive RIP mode. The principal switch assigns domain IDs that are available in the locally configured allowed domain list. The local switch sends a configured domain ID request to the principal switch. You may use other interfaces also. limit EIGRP AS=100 updates to a max of 40% of link bandwidth), R1(config-if)# ip hello-interval eigrp 100 30 (ex. Click in command box. Cisco Commands Cheat Sheet Almost all Cisco devices use Cisco IOS to operate and Cisco CLI to be managed. To commit pending domain configuration changes and release the lock, follow these steps: Commits the pending domain configuration changes. Note: Throughout this document vty is used to indicate "Virtual Terminal Type". Configure the interface that you want to export packets with: Switch# destination source gigabitEthernet 0/1. (does the IPv6 version of many IPv4 commands), show processes (shows active processes running on router), show users (show who is telnetted into this device), ping X.X.X.X (try to reach the destination host at X.X.X.X), trace X.X.X.X (show the path taken to reach the destination host at X.X.X.X), R1(config)# do show ??? A disruptive reconfiguration may affect data traffic. Tip When the FICON feature is enabled in a given VSAN, the domain ID for that VSAN remains in the static state. Each command can add multiple servers. If you do not save the configuration, the previously saved startup configuration is used. -Static NAT requires only one statement. The ip domain-name is used on a router so you the router can do DNS lookups. 7. The first step is to name the flow exporter: Enter the IP address of the server your network analyzer is on (Change the IP address): Configure the interface that you want to export packets with: Configure the port that the software agent will use to listen for network packets: Set the type of protocol data that youre going to export by entering this command: To make sure there are no gaps in when flow data is sent enter the following command: Once youve configured the flow exporter it is time to create the flow monitor. Generate RSA key pairs for your router; this automatically enables SSH. switch(config-fcid-db)# vsan 1000 wwn contiguous-allocation vsan 1030. To discard pending domain configuration changes and release the lock, follow these steps: Discards the pending domain configuration changes. Enables the contiguous allocation option in VSAN 81 through 83. This puts these devices in a client-server arrangement, where Carter acts as the server, and Reed acts as the client. The Cisco IOS SSH client configuration on Reed is the same as required for the SSH server configuration on Carter. When an N or NL port logs into a Cisco MDS 9000 Family switch, it is assigned an FC ID. A global command that denes one of possibly multiple user names and associated passwords used for user authentication. show sshDisplays the status of SSH server connections. resolved IPv4 address to MAC address mappings. This change of default behavior from releases prior to Cisco MDS SAN-OS Release 2.0(1b) prevents FC IDs from being changed after a reboot. 2022 Cisco and/or its affiliates. Below is an example: January 1, 2020 Manik Hosen 1 Comment. This screenshot shows that the PuTTY client connects to the router and prompts for the username and password. If two switches have the same configured priority, the switch with the lower WWN becomes the principal switch. Step 3. The HBA port's FC ID must be manually configured to be different from the storage port's FC ID. Note Persistent FC IDs with loop-attached devices (FL ports) need to remain connected to the same port in which they were configured. You can turn the router on to make sure there is no damage to the lighting/indicators. The configured domain ID becomes 0 preferred. Ensure that the required VSAN is an active VSANpersistent FC IDs can only be configured on active VSANs. Enables domain manager fast restart on the range of VSANs from VSAN 7 to VSAN 10. switch(config)# no fcdomain optimize As a best practice, it is a good idea to disable any unused open ports on the switch.

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