Most Popular
1500 questions
9
votes
4 answers
High latency during downloads
I am having the same issue on my business connection 5Mbps as in another posting on this site. As soon as any computer starts a download the latency on the first hop past our DFG provided by our ISP (Bell) goes off the chart.
This first hop is…
SA-KRP
- 91
- 1
- 2
9
votes
2 answers
QoS woes - managed IP VPN
(First of all, I'm sorry for this wall of text. I don't know how to make it any shorter without losing important information. I originally wanted to use the chat room for this, like we do on serverfault for these kind of questions, but there is…
pauska
- 422
- 6
- 15
9
votes
4 answers
Network Byte Order
According to big endian byte ordering or network byte order the bits are transmitted in this order: bits 0-7 first, then bits 8-15, then 16-23 and bits 24-31 last.
Does this means that bits from version, identification, TTL etc go first and then…
MUSR
- 536
- 1
- 6
- 17
9
votes
4 answers
BGP - how does IGP know the right route?
Let's consider a host A in an autonomous system AS100. Suppose it wants to communicate with host B in another AS, say, AS200. In AS100 there are several routers. Within one AS, the rotuing protocols used are Internal gateway protocols such as OSPF…
user4205580
- 455
- 3
- 10
9
votes
5 answers
How many IP addresses can a device or an interface possess?
Can one IP address be assigned to more then one device or interface? In which situations may this happen?
Can one device or interface posses more than one IP address?
user15062
9
votes
3 answers
How are MAC/IP addresses used in routing
I have to teach my sixth form about MAC Addresses and IP Addresses in a few weeks time and there are some areas I am unclear on which I am hoping some of you will be able to clarify for me. I have enough to get them through the syllabus, but I like…
Robert Flook
- 231
- 3
- 5
9
votes
3 answers
Trying to test a virtual lab VRRP configuration for STP issues
I'm in the middle of setting up a lab with a VRRP configuration, and I'm trying to search for any possible issues we might run into in production.
One issue I am aware of with VRRP is that it seems that STP convergence time (of about 45 seconds I…
Geekman
- 1,478
- 3
- 16
- 27
9
votes
2 answers
Can one configure several static EIGRP Neighbors on one interface?
Can one configure several static EIGRP Neighbors on one interface and are there any considerations apart from disabling split-horizon that one should consider?
Max
- 837
- 3
- 10
- 20
9
votes
2 answers
How do you throttle Dropbox Traffic?
It appears that Dropbox uses Amazon AWS for it's storage, so I am not able to just block or trottle traffic to dropbox.com
Since there are a lot of web services that rely on AmazonAWS, I cannot just block that domain.
Do you have any suggestions…
Blake
- 932
- 2
- 10
- 20
9
votes
3 answers
ipv6 addressing /127 vs eui-64
Best practice is to use a manual /127 address for point to point addressing described here RFC2373
for EUI-64 ERFC 2373 dictates the conversion process, which has two steps. The first is to convert the 48-bit MAC address to a 64-bit value. To do…
DrBru
- 1,619
- 3
- 16
- 33
9
votes
1 answer
Globally disable QoS on Cisco 3750 in production
I suspect some issues with faulty QoS settings on a 3750 stack running in a 24x7 environment. The 3750 mainly routes between vlans on a lan segment. Since it is a lan device (not terminating any wan links) i want to globally disable QoS (no mls…
user209
- 894
- 2
- 11
- 19
9
votes
4 answers
Access-Lists and VLAN and understanding traffic flow
I have a question that I am having a very hard time wrapping my mind around, and I think you might be able to square me away.
When applying an access list to a VLAN interface (VLAN 32) in a L3 switch, for clients that are in VLAN 32 subnet, are they…
skrap3e
- 463
- 1
- 5
- 12
9
votes
6 answers
Pinging broadcast address
I am using Linux. I read somewhere on the internet that pinging the address 255.255.255.255 will ping everyone in the network segment. And it will return every IP addresses in that subnet. But when I tried
ashokkrishna@ashokkrishna-Lenovo-B560:~$…
ashok
- 605
- 4
- 7
- 14
9
votes
1 answer
Ethernet switch capable of H-QoS at the 802.1q level
I have the following type of links at the edge of my ISP cloud:
+-----------------------+
| Customer 1 …
mellowd
- 3,834
- 19
- 24
9
votes
4 answers
Delay or Offset-List for EIGRP tuning?
Studying for CCNP-ROUTE - everything I read says it's preferable to use delay and offset-lists for metric tuning vs. say bandwidth in EIGRP. In practice what is more commonly used out of those two options (delay/Offset-lists)? How common is low…
A L
- 3,310
- 9
- 33
- 56