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1500 questions
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2 answers

What certifications are there for Fiber Optic termination and splicing?

As a knowledgeable person in computer networks I have always had an itch for learning how to create custom-length fiber optic cables. So, as a personal goal, I want to get trained and certified in cable termination and splicing. What is a good…
angelcool.net
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When exactly is ARP protocol is used

I am a quite a beginner in network engineering so please be nice. I am not sure I understand how ARP protocol works in some situation. For example, if we have following problem: ARP cache is empty host1 (source) --> router1 (default) router1…
MyNameIsNemo
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IPv6 and online privacy and security

I am studying up on IPv6 and part of the talk was about how the machines generate or can have multiple IPv6 addresses for internal use and external use. Does this mean that there is no longer a "public" IP address that all the machines inside a…
Jason
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"Bridge” two subnets together?

Here is what the network looks like: Network A is 192.168.116.X , subnet 255.255.255.0 Network B is 12.32.8.X , subnet 255.255.255.0 There are no routers present in either of the network schemes. All routing is done through unmanaged switches and…
Eminent
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Is there a good way to standardize on an RS232 over RJ45 pinout that is used for connecting to network device console ports?

These best practices espouse having a dedicated physical console connection to network equipment for management. Assuming your device is within RS232 range of your management workstation, this would likely mean connecting to your devices' RS232…
alx9r
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Who Actually Utilizes Mobile IP?

I'm presently teaching a networking class, and the various texts that I've cobbled together all discuss Mobile IP. I always try to give real-world examples of how protocols are utilized, but the problem is: I'm not sure who / what actually uses…
Chance
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Can we do redistribution of ipv4 routes onto v6 address families?

Iam just curious to know whether ipv4 routes can be redistributed to ipv6 address-families. Eg: I have a router for BGP configuration with ipv6 address-family and OSPF in ipv4 with other neighbor. Can I do the redistribution? BGP …
user2720323
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What to use as ARP request Target Hardware Address?

When sending ARP request, what must be filled in the target hardware address (THA)? This technet blog post says it is to be filled with zeros (0.0.0.0) -although doesn't look like a MAC address!, and the Wikipedia article suggests FF:FF:FF:FF:FF:FF…
amyassin
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Distributing static routes across an OSPF area

If you have a router which does not support OSPF, but your routing topology makes use of OSPF as all other devices do support it, what is the best way to get this routers networks in to the OSPF area? My initial thought was to put a static route on…
SimonJGreen
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Subnetting aggregation

I saw this example online . 192.168.12.0/23 applies the network mask 255.255.254.0 to the 192.168 network, starting at 192.168.12.0. This notation represents the address range 192.168.12.0 - 192.168.13.255. How do I obtain the applicable…
iridescent
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IRB versus VLAN usage

I am fairly new to Juniper as an engineer and I have been doing some reading lately concerning IRB versus vlans. I have noticed we use them in most configurations throughout our environment, IRB that is. Can anyone share some of the advantages…
Ty Smith
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VirtualAccess Behavior with PPP

A small ISP I provide service for has recently been consolidating their equipment. One of their small branches only has a handful (5 or so) of users receiving their internet through a router, a Cisco 3725, using PPP with a RADIUS server for AAA, and…
renwique
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What is the difference between WAN and LAN ports?

I was looking some routers and I noticed that in some of them there is a distinction between WAN and LAN ports? The WAN ports is to connect an access point and LAN ports to connect a switch or a PC?
yaylitzis
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Access Point over Wireless Extenders

Is there any real difference over placing Access Points over Wireless Extenders? How do you know when to use one or the other?
Jason
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Cannot get Cisco-ASA 5505 properly configured

I have been at this for 2 days, been through countless forums and tutorials as far as configuring my ASA-5505. I can't get out to the internet (even using ping from the ASA), I can't "see" the ASA on the network .. Basically it's a dead piece of…
Zak
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