Archivo de la categoría: Cisco

Error in legacy ssh switches: Unable to negotiate with 192.168.1.1: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1 The OpenSSH website has a page dedicated to legacy issues such as this one. It suggests the following approach, on the client: ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 123.123.123.123 or more permanently, adding Host 123.123.123.123 KexAlgorithms +diffie-hellman-group1-sha1 to ~/.ssh/config. This will enable the old… Read More: cisco ssh legacy Unable to negotiate with no matching key… »

  S1#conf t S1(config)#vlan 51 S1(config-vlan)#name ENG S1(config-vlan)#vlan 52 S1(config-vlan)#name MGMT S1(config)#int gi0/0 S1(config-if)#switchport mode access S1(config-if)#switchport access vlan 51 S1(config-if)#spanning-tree portfast S1(config)#int gi0/1 S1(config-if)#switchport mode access S1(config-if)#switchport access vlan 52 S1(config-if)#spanning-tree portfast   S1#show vlan VLAN Name Status Ports —- ——————————– ——— ——————————- 1 default active Gi0/2, Gi0/3, Gi1/0, Gi1/1 Gi1/2, Gi1/3 51 ENG… Read More: Routing between vlans – Router on a Stick and Switching… »

    R1#show controller S0/0 Interface Serial0/0 Hardware is GT96K DCE 530, clock rate 2000000 idb at 0x653ED468, driver data structure at 0x653F4B8C wic_info 0x653F5190 Physical Port 1, SCC Num 1 R1#sh ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES unset administratively down down Serial0/0 unassigned YES unset administratively down down… Read More: Routing Lab —Static route »

S1#show ip int brief S1#show interfaces status Port Name Status Vlan Duplex Speed Type Gi0/0 connected 5 auto auto unknown Gi0/1 connected 2 auto auto unknown Gi0/2 connected 1 auto auto unknown Gi0/3 connected 1 auto auto unknown Gi1/0 connected 1 auto auto unknown Gi1/1 connected 1 auto auto unknown Gi1/2 connected 1 auto auto… Read More: Troubleshooting Switches »

Create vlans SW1#conf t SW1(config)#vlan 2 SW1(config-vlan)#name ACCT SW1(config-vlan)#exit SW1(config)#vlan 3 SW1(config-vlan)#name Sales SW1(config-vlan)#exit SW1(config)#int gigabitEthernet 0/0 SW1(config-if)#switchport access vlan 200 TRUNK PORTS Manual Configuration ( TRUNK / NONEGOTITATE) Dynamic Configuration ( Dinamic Auto / Dynamic Desirable) Dynamic Configuration DTP (Dynamic Trunking Protocol) * * SW1 Desirable -> Los dos se convierten en Trunks (Envian… Read More: VLAN routing »

41 iperf-3 https://iperf.fr/ iPerf – The ultimate speed test tool for TCP, UDP and SCTP Server: iperf3 -s Client:   iperf3 -c 192.168.1.1 TinyCore #!/bin/sh # Variable Assignment INTERFACE=eth0 ADDRESS=192.168.0.100 BROADCAST=192.168.0.255 GATEWAY=192.168.0.1 NETMASK=255.255.255.0 NAMESERVER1=8.8.8.8 NAMESERVER2=8.8.4.4 # Bring up the interface ifconfig $INTERFACE $ADDRESS netmask $NETMASK broadcast $BROADCAST up route add default gw $GATEWAY $INTERFACE #… Read More: Cisco commands »

The following outputs should be collected at the time of the memory is low – show clock show mem stat show proc mem sorted show mem all totals show log     b- represents ‘byte’, also fyi – «Total(b)» is the total amount of memory, in bytes, available for the processor after the Cisco IOS… Read More: memory router »

Posted on January 21, 2013 Rate This I’ve done my fair share of CallManager Express (CME) installations over the years, many of which were for small businesses.  I usually get to try and replace an old battleship of a phone system that has been running for a long time but has either finally given up… Read More: On Demand Auto Attendant for CallManager Express »

conf t hostname SW001 enable secret cisco motd ^ BANNER HERE^ no ip domain-lookup line con 0 logging synchronous Mostrar interfaces: show ip int brief R1#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 2.2.2.1 YES manual up up Serial0/0 unassigned YES NVRAM administratively down down FastEthernet0/1 unassigned YES NVRAM administratively down down… Read More: Cisco useful commands (beginner) »