Information Technology

The difference between VLANs and VLAN interfaces   An SVI [   switched virtual interface ]  is normally found on switches (Layer 3 and Layer 2). With SVIs the switch recognizes the packet destinations that are local to the sending VLAN and switches those packets and packets destined for different VLANs are routed. Note:  An SVI cannot be activated unless the VLAN itself is created and at least one physical port is associated and active in that VLAN. Unless the VLAN is created there will be no spanning tree instance running hence the line protocol will be down for the SVI VLAN. SW: ! vlan 10-11 ! interface GigabitEthernet0/0  switchport access vlan 10  media-type rj45  negotiation auto ! interface GigabitEthernet0/1  switchport access vlan 11  media-type rj45  negotiation auto ! ! interface Vlan10  ip address 10.0.0.1 255.0.0.0 ! interface Vlan11  ip address 11.0.0.1 255.0.0.0 ! ip routing ! ! ------------

Configuration MPLS L2 VPN (VPLS) between two branches !!! Your tasks are: 1- R2(f0/0) not assign IP   R5(f0/1) no assign IP. 2- Apply routing protocol RIP v2 on R1 & R6 . 3- Apply OSPF on R2-R3-R4-R5, but R2 (23.0.0.0 & 2.2.2.2) no route with 16.0.0.0  and    R6 the same. 4- Company has two branches (16.0.0.1  -   16.0.0.6) 5- MPLS not need know network of customers into PE & P,  so customer network not need route   into core. R1: en conf t interface f0/0 no shutdown ip address 16.0.0.1 255.0.0.0 interface loopback 0 ip address 1.1.1.1 255.255.255.255 router rip network 16.0.0.0   network 1.0.0.0    version 2 no auto-summary end wr me --------------- R2: en conf t mpls ip interface f0/1 no shutdown ip address 23.0.0.3 255.0.0.0 mpls ip interface loopback 0 ip address 2.2.2.2 255.255.255.255 router ospf 1 network 23.0.0.0  0.255.255.255 area 0 network 2.0.0.0   0.255.255.255  area 0 end wr me -------------------- R

How to Configure LVM on Linux by Ansible: 1- Install ansible on Centos:   [root@cloud ~]#   yum install -y ansible 2- create inventory hosts:  [root@cloud ~]# vim /etc/ansible/hosts           [vmware]           192.168.17.20 Note: We need  Create LVM on one  machine. can add any IPs of machines in hosts file 3- Create YAML file: [root@cloud ansible]# vim /etc/ansible/lvm.yaml ######### ---  - hosts: vmware    user: root    tasks:    - name: vgcreate      lvg:       vg: vgdata       pvs: /dev/sdb1    - name: lvcreate      lvol:       vg: vgdata       lv: dataone       size: 1500M    - name: create file system      filesystem:       fstype: ext4       dev: /dev/vgdata/dataone    - name: mount logical volume      mount:       name: /lvdata       src: /dev/vgdata/dataone       fstype: ext4       state: mounted ######### 4- Run YAML file by ansible: [root@cloud ansible]# ansible-playbook  -s    lvm.yaml On target machine: D

Configuration OSPF Protocol on HPE OS Comware Routers . R1: #  sysname AR1 # interface GigabitEthernet0/0/0  ip address 192.168.10.1 255.255.255.0  # interface GigabitEthernet0/0/1  ip address 192.168.20.1 255.255.255.0  # interface GigabitEthernet0/0/2 # interface NULL0 # interface LoopBack0  ip address 10.1.1.1 255.255.255.255  # ospf 1   area 0.0.0.0    network 192.168.10.0 0.0.0.255    network 192.168.20.0 0.0.0.255  # return R2: [V200R003C00] #  sysname AR2 #  snmp-agent local-engineid 800007DB03000000000000  snmp-agent  #  clock timezone China-Standard-Time minus 08:00:00 # portal local-server load portalpage.zip #  drop illegal-mac alarm #  set cpu-usage threshold 80 restore 75 # aaa   authentication-scheme default  authorization-scheme default  accounting-scheme default  domain default   domain default_admin   local-user admin password cipher %$%$K8m.Nt84DZ}e#<0`8bmE3Uw}%$%$  local-user admin service-type http # f

Configuration RIP Protocol on HPE Comware Routers!! ## Redistribution static route into RIP domain: ## RIP can be send update route by encryption between routers      for example:        R2 <------> R4   authentication password (pass) # No route with R2 because R4 authentication and R4 not authentication ------------------------------------------------------------------------------------------------------------------- Good Luck https://www.linkedin.com/in/ahmedms/

Authentication on  HPE OS Comware Routers  How to format flash: Display layer 2 interfaces <H3C> display interface brief Display layer 3 interfaces <H3C> display ip interface brief Enable  LLDP standard protocol like (cisco CDP): Authentication Types on VTY: None:   can be telnet without username/password Password:   can be telnet with password not username Schema:    can be telnet with username/password 1- None:   no username / password required when login to router by telnet with privilege 0 change privilege to 3: 2-  Set authentication password no username with encrypt password: 3- Schema (username/password) authentication local: # Create user (Ahmed) password: comware privilege level 3 access telnet & SSH only # allow any users access router by all (telnet – ssh) # assign timeout: # Display users: