CCNP Certification BCMSN Exam Tutorial: Server Load Balancing (SLB)
When you/' re working on your BCMSN exam on your way to CCNP certification- you/' ll read at length about how Cisco routers and multilayer switches c
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CCNP Certification BCMSN Exam Tutorial: Server Load Balancing (SLB)
When you/' re working on your BCMSN exam on your way to CCNP certification- you/' ll read at length about how Cisco routers and multilayer switches can work to provide router redundancy - but there/' s another helpful service- Server Load Balancing- that does the same for servers. While HSRP- Contd...
When you/' re working on your BCMSN exam on your way to CCNP certification- you/' ll read at length about how Cisco routers and multilayer switches can work to provide router redundancy - but there/' s another helpful service- Server Load Balancing- that does the same for servers. While HSRP- VRRP- and CLBP all represent multiple physical routers to hosts as a single virtual router- SLB represents multiple physical servers to hosts as a single virtual server.
CCNA
CCNA stands for Cisco Certified Network Associate - a certification for IT professionals that is issued by Cisco Systems- Inc.- one of the most successful computer networking companies. Cisco manufactures and markets a wide range of devices for both enterprises and telecommunications carriers....
Cisco CCNA Certification Exam Tutorial: Distance Vector Command Review
Part of studying for CCNA exam success is keeping all these new commands straight in your head! And let/' s face it- there are a lot of commands you need to know in order to pass the CCNA exam and earn that certification. Here/' s a review of some very important distance vector and static routi...
In the following example- three physical servers have been placed into the SRB group ServFarm. They/' re represented to the hosts as the virtual server 210.1.1.14.
The hosts will seek to communicate with the server at 210.1.1.14- not knowing that they/' re actually communicating with the routers in ServFarm. This allows quick cutover if one of the physical servers goes down- and also serves to hide the actual IP addresses of the servers in ServFarm.
Cisco CCNA Certification Exam Tutorial: Port Based Authentication
To pass your CCNA exam and earn this coveted certification- you must understand the details of port-based authentication. This knowledge has a great deal of value in production networks as well- since this authentication scheme is regularly implemented. Let/' s take a look at this particular C...
CCNP Certification BSCI Exam Tutorial: The BGP Neighbor Process
Like TCP- BGP is connection-oriented. An underlying connection between two BGP speakers is established before any routing information is exchanged. This connection takes place on TCP port 179. As with EIGRP and OSPF- keepalive messages are sent out by the BGP speakers in order to keep this rel...
The basic operations of SLB involves creating the server farm- followed by creating the virtual server. We/' ll first add 210.1.1.11 to the server farm:
MLS(config)# ip slb serverfarm ServFarm
MLS(config-slb-sfarm)# real 210.1.1.11
MLS(config-slb-real)# inservice
The first command creates the server farm- with the real command specifying the IP address of the real server. The inservice command is required by SLB to consider the server as ready to handle the server farm/' s workload. The real and inservice commands should be repeated for each server in the server farm.
To create the virtual server:
MLS(config)# ip slb vserver VIRTUAL_SERVER
MLS(config-slb-vserver)# serverfarm ServFarm
MLS(config-slb-vserver)# virtual 210.1.1.14
MLS(config-slb-vserver)# inservice
From the top down- the vserver was named VIRTUAL_SERVER- which represents the server farm ServFarm. The virtual server is assigned the IP address 210.1.1.14- and connections are allowed once the inservice command is applied.
You may also want to control which of your network hosts can connect to the virtual server. If hosts or subnets are named with the client command- those will be the only clients that can connect to the virtual server. Note that this command uses wildcard masks. The following configuration would allow only the hosts on the subnet 210.1.1.0 /24 to connect to the virtual server.
MLS(config-slb-vserver)# client 210.1.1.0 0.0.0.255
SLB is the server end/' s answer to HSRP- VRRP- and GLBP - but you still need to know it to become a CCNP! Knowing redundancy strategies and protocols is vital in today/' s networks- so make sure you/' re comfortable with SLB before taking on the exam.
Cisco CCNP, BSCI Exam Tutorial: 10 ISIS Details You Must Know!
Earning your CCNP certification and passing the BSCI exam depends on knowing the details of many Cisco technologies- ISIS chief among them. To help you prepare for exam success- here/' s a list of ISIS terminology and basic concepts that will help you pass this tough exam. Enjoy!...
Cisco CCNA CCNP Certification Exam Tutorial: ISDN And Multilink PPP
ISDN is a huge topic on both your Cisco CCNA and BCRAN CCNP exams. While many ISDN topics seem straightforward- it’s the details that make the difference in the exam room and working with ISDN in production networks. Configuring and troubleshooting multilink PPP is just one of the skills you’ll...
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- CCNA
CCNA stands for Cisco Certified Network Associate - a certification for IT professionals that is issued by Cisco Systems- Inc.- one of the most successful computer networking companies. Cisco manufactures and markets a wide range of devices for both enterprises and telecommunications carriers. - Cisco CCNA Certification Exam Tutorial: Distance Vector Command Review
Part of studying for CCNA exam success is keeping all these new commands straight in your head! And let/' s face it- there are a lot of commands you need to know in order to pass the CCNA exam and earn that certification. Here/' s a review of some very important distance vector and static routi - Cisco CCNA Certification Exam Tutorial: Port Based Authentication
To pass your CCNA exam and earn this coveted certification- you must understand the details of port-based authentication. This knowledge has a great deal of value in production networks as well- since this authentication scheme is regularly implemented. Let/' s take a look at this particular C - CCNP Certification BSCI Exam Tutorial: The BGP Neighbor Process
Like TCP- BGP is connection-oriented. An underlying connection between two BGP speakers is established before any routing information is exchanged. This connection takes place on TCP port 179. As with EIGRP and OSPF- keepalive messages are sent out by the BGP speakers in order to keep this rel - Cisco CCNP, BSCI Exam Tutorial: 10 ISIS Details You Must Know!
Earning your CCNP certification and passing the BSCI exam depends on knowing the details of many Cisco technologies- ISIS chief among them. To help you prepare for exam success- here/' s a list of ISIS terminology and basic concepts that will help you pass this tough exam. Enjoy! - Cisco CCNA CCNP Certification Exam Tutorial: ISDN And Multilink PPP
ISDN is a huge topic on both your Cisco CCNA and BCRAN CCNP exams. While many ISDN topics seem straightforward- it’s the details that make the difference in the exam room and working with ISDN in production networks. Configuring and troubleshooting multilink PPP is just one of the skills you’ll
