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1500 questions
9
votes
1 answer

What is the NO PAYLOAD ENCRYPTION version of the IOS software?

When looking at the downloads available on the Cisco site, they have a regular version of the file and a NO PAYLOAD ENCRYPTION version. What is the difference? And why would one choose one over the other?
lamp_scaler
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5 answers

Can you reduce RTT by increasing the bandwidth on a link?

Does increasing the bandwidth on a link from, let's say, 1mb to 30mb reduce the RTT? I have found one answer saying no. Can someone please explain? Also, what are the best mechanisms to reduce RTT?
NetworkNinja
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9
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5 answers

Monitor specific traffic type on a Cisco router

Is it possible to monitor a specific traffic type going through a cisco router? (like monitoring via wireshark) Ex: I want to monitor http traffic specifically that is passing through a router. (or DNS, FTP, ...)
Bulki
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9
votes
3 answers

ASA Netflow support

Cisco ASAs support a version of netflow called NetFlow Secure Event Logging (NSEL). Is special support for the protocol required on the collectors to view the flows? Is the protocol compatible with traditional netflow collectors? In my…
henklu
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1 answer

Internet Cable Has Been cut in two and taped back together

Let me explain, we have a two analogue lines (something like 16 pair each, the standard cable that's put into buildings) that come into our building but they pass through the building next door. These two cables were cut in two places (and i mean…
James Waring
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9
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7 answers

session layer in OSI model

I'm wondering to know how session layer works. In my understanding session layer is to establish active communication sessions between two devices. Based on the OSI layer model, it works layer by layer meaning that the data is generated from…
programmer core
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9
votes
7 answers

What is the use of NTP server when devices have accurate time?

Just as the questions says, why there would be an NTP server when the devices already got the internal clock and are accurate.
Jugert Mucoimaj
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9
votes
3 answers

Generate list of subnets on switch using SNMP?

Is anyone familiar with an approach to generate a list of subnets on a particular switch (let's pick a more popular one - Cisco) using SNMP? How about a list of VLANs? If so, can you point me to the MIBs / OIDs involved? (network newbie here)
Dmitri Boulanov
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9
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2 answers

VPN's in cloud hosting/dedicated server environments, IPSec tunnels vs tinc

I am in the process of designing a virtual private network setup for a cloud hosting environment. Given our requirements I don't really see this as different from a dedicated server environment. The idea is that we want to allow customers to be…
Chris Travers
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9
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5 answers

Different Behaviour of a Router

There are 2 cases that I would like to point out: When the router is directly connected with 2 PCs like this, In this case, PC2 is able to ping PC3. I just configured the IP address of PC2 and PC3 and a default gateway for them, in this case there…
anonymous
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9
votes
1 answer

EoMPLS, MSTP, and RPVST

We are looking at Cisco ME3600 to provide connectivity between our datacenter fabrics for some software defined networking. Due to the platform having a higher limitation on EoMPLS xconnects than VRFs (512 vs 128), we are considering the approach…
nicotine
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9
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1 answer

What does it mean to “plumb” an IP address?

Plumbing an IP address means what? What are some examples of it?
stark0323
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9
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2 answers

Multi-drop Cat5e/6 Cable?

I'm looking to install ethernet ports in a small business. There are 7-8 groups of cubicles each with 4 desks. Ideally I'd like to run a cable to each desk but if my math is correct I'm looking at nearly 6,000+ feet of cable to do that. I saw…
Anonymiter
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9
votes
3 answers

How can I calculate the number of internet routes myself?

In the JNCIA study guide, it is stated that there are currently 120k routes on the internet and that Juniper supported up to 450k. How did they arrive at the 120k? If I wanted to know how many exact routes, how could I find that by myself?
CaseyJones
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9
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2 answers

How to connect private users to applications within a trusted network without direct connection to the Server Switch

I have 2 Control Center Sites each with 2 N7Ks in a full mesh design and 2 Nexus 5548UP’s as Internal Server Farm Aggregation and 2 ASA Firewalls hanging off each N5K Agg. Both Sites have a mirror image design. We have users that need direct access…
Rob
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