Focus & Learn

Microsoft Outlook uses an OST (Offline Storage Table) file to store cached mailbox data in Cached Exchange Mode. Although Outlook supports Local data as OST files up to 50 GB by default , corruption risk increases as the OST grows very large. Ultimately, Outlook starts having performance and synchronization issues, leading to the error message and preventing further synchronization of new data. In fact, Microsoft 365 Business Premium, or a Microsoft 365 Enterprise E3/E5 license (Source) to increase its storage limit to 100GB. Source To resolve this issue, some probable instructions below :  Method 1 : Cached less amount of mail locally (Offline Mode). Fig:01 - Account information from Outlook Client.  Fig-02 : Exchange Account Setting. Reduce length of Caching mailbox as Local Data for the Offline.  Ex: 3 months length would be max size of OST 22GB~25GB.  Method 2. Disable Caching of Shared folders. Method 3: Utilize In-Place-Archive (Online Archive) From the Excha...

Topic: Microsoft Outlook Connectivity Modes. Someone wanted to which one is better to use Microsoft Outlook Connectivity Modes?  When Outlook connects to Microsoft Exchange (On-Prem or Exchange Online / Microsoft 365), it can work in two primary modes: a) Cached Exchange Mode as Offline Settings b) Online Mode . Basically, while Cached Exchange Mode is the default mode for Exchange, Outlook.com, and Microsoft 365 accounts. If Uncheck (Turn off) it would be Online Mode and People can reset their own choice while installing mail account at the local PC/Laptop.  Cached Exchange Mode : is a setting in Microsoft Outlook where a copy of your Exchange mailbox is stored locally on your computer in an OST (Offline Storage Table) file. How it works : Outlook downloads emails, calendar, contacts, etc. to your computer You work from the local copy Outlook syncs changes in the background with the Exchange server Works even when the internet is slow or temporarily unavailable Key cha...

EtherChannel is a Cisco technology that allows you to bundle multiple physical Ethernet interfaces into one logical interface and the bundle of ethernet interfaces is called Port-Channel. This gives: Higher Bandwidth → adds up the bandwidth of all bundled links. Redundancy & Fault Tolerance → if one link fails, traffic keeps flowing on the others. Load Balancing → distributes traffic across links. Simpler Management → several ports act as one logical interface. ** Channel Groups and Port-Channel Interfaces A channel group is the configuration command that bundles multiple physical interfaces into one logical EtherChannel and When you assign interfaces to the same channel group, they are automatically associated with a new logical interface called a Port-Channel.  ** EtherChannel Characteristics - Maximum 8 links can be bundled in one EtherChannel. All links in the channel must have: Same speed (e.g., all 1 Gbps). Same duplex mode. Same VLAN information (if on access mod...

  STP Objective

 How to Configure the DHCP Server in Cisco Step-01: DHCP Server Configuration in Cisco Router CoreRouter(config)#interface gigabitEthernet 0/0 CoreRouter(config-if)#ip address 172.31.0.1 255.255.255.0  CoreRouter(config-if)#no shutdown  CoreRouter(config)#ip dhcp pool LAN_POOL  CoreRouter(dhcp-config)#domain-name xyz.com  CoreRouter(dhcp-config)#network 172.31.0.0 255.255.255.0 CoreRouter(dhcp-config)#default-router 172.31.0.1  CoreRouter(dhcp-config)#dns-server 172.31.0.1  CoreRouter(config)#ip dhcp excluded-address 172.31.0.1 172.31.0.10 CoreRouter(config)#ip dhcp excluded-address 172.31.0.254 Step-02: DHCP Client Configuration in Cisco Router ClientRouter(config)#interface fastEthernet 0/0 ClientRouter(config)#no shutdown ClientRouter(config)#ip address dhcp ClientRouter#show ip interface brief Step-03: Check the Configuration CoreRouter#show ip dhcp pool CoreRouter#show ip dhcp binding N:B: Every nodes getting the IP addresses from DHCP server....

  How to Configure IPSec VPN Site to Site Tunneling in Cisco Routers Addressing Table Device Interface IP address Gateway Comment R1 Gig0/0 192.168.10.1/24     Se0/0/0 10.10.10.1/30     R2 Se0/0/0 10.10.10.2/30     Se0/0/1 10.20.20.2/30     Gig0/0 192.168.20.1/24     R3 Gig0/0 192.168.30.1/24     Se0/0/0 10.20.20.1/30     PC-A Fa0 192.168.10.10/24 192.168.10.1   PC-B Fa0 192.168.20.10/24 192.168.20.1   PC-C Fa0 192.168.30.10/24 ...