Routing

Gain lot of techincal knowledge and understanding of routing protocols like (RIP, EIGRP, OSPF, BGP, NAT, PAT IPv4 & IPv6)

Named-ACL

Named Access List

Named Access List: - Basically, when we create an Access List we assign a number. But number is not so user friendly, so we can...

Link flap & err-disabled problem in CISO IOS

Link flap & err-disabled problem in CISO IOS Link Flap Problem  :-  Link flap means that the interface continually goes up and down. The interface...
Access Control List Rules

Access Control List Rules

  Access Control List: -  ACL is a set of rules that is usually used to filter the network traffic. Access Control List Rules: - Write deny statement...
CRC errors

How to resolve CRC errors

How to resolve CRC errors Use below command to check CRC errors in CICO IOS. Command :- show interfaces fastEthernet x counters errors Command :- show interfaces fastEthernet x  CRC...
show list of license installed in cisco router

show list of license installed in cisco router

show list of license installed in cisco router :- Use the show license command to verify what licenses are enabled in cisco Router.
BGP Aggregation | Summarization

BGP Aggregation | Summarization

BGP Aggregation | Summarization :- It reduces the size of routing table. It minimizes the number of routing updates. To summarize network at least...

CISCO IOS Hardening- Which services needs to be enabled or disabled...

CISCO IOS Hardening- Which services needs to be enabled or disabled on router/L3 Switches :- The following services needs to be enable on router/L3 Switches. ...

Access List Troubleshoot

Access List Troubleshoot :-  Lets creates one scenario here. Suppose you forgot to write, permit statement after deny statement. The traffic which is unclassified will automatically deny. Lets...

CISCO IOS Hardening- Keeping Time and Logging

CISCO IOS Hardening- Keeping Time and Logging :- 1- Use NTP to synchronize the routers clock to a high-level NTP Server Stratum | GPS radio ...

CISCO IOS Hardening- Interface Hardening

CISCO IOS Hardening- Interface Hardening :- Following commands need to enter ? # no cdp enable # ip accounting access-violation # no ip directed-broadcast #...