Highest Voted Questions - Network Engineering Stack Exchange

9

votes

1 answer

Suppress confirmation prompts in IOS when copying files

I am about to upgrade the IOS on several hundred Cisco VG224's in preparation for a CUCM upgrade. I am attempting to streamline/automate this process as much as possible, and currently my main problem is the "confirmation" prompts that IOS gives…

asked Oct 30 '13 at 15:16

Brett Lykins

8,278
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36
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9

votes

2 answers

Cisco AP not powering up until pressing mode button

We have two Cisco 2602E APs and one Cisco 3602E AP deployed at a location in China. They are connected to an HP ProCurve 2910al PoE switch. The 3602E powers up fine when the switch is rebooted (i.e. power loss, they have rolling blackouts in this…

asked Oct 21 '13 at 13:56

some_guy_long_gone

3,062
1
19
30

9

votes

2 answers

AP3602 with rcvk9w8 image throws "%CDP_PD-2-POWER_LOW: All radios disabled"

We recently bought some new AP3602Es from Cisco. I'm trying to understand why this AP will not turn on the radio when we are sending enough power to the AP. I'm using inline power from the switch, but after the AP comes on, it sends…

asked Oct 08 '13 at 16:22

Mike Pennington

29,989
11
79
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9

votes

1 answer

Troubleshoot output drops cisco 3750x

Investigating output drops on a 3750x stack.. Two interfaces that connects to a file server (broadcom teamed interfaces) shows some output drops when i transfer large files. The utilization of the ports are still below the 1Gb port speed. As far…

cisco

asked Oct 03 '13 at 19:57

user209

894
2
11
19

9

votes

1 answer

NCS Cisco Prime licenses

I am almost 100% sure this is not possible, but just thought about double checking with someone with more expertise on wireless. Suppose I have the following scenario: WLC-1 with 25 licenses on building 1 (5508) WLC-2 with 100 licences on building 2…

asked Sep 24 '13 at 18:53

Brown Taylor

453
1
4
11

9

votes

4 answers

FTTH and alternatives

I was listening to a interview regarding the back country and Fiber to the home with the Swedish professor in telecommunications Per Ödling. Once in the interview he was referring to technologies that was on the way that was "as good as fiber" for…

asked Sep 24 '13 at 12:11

Niclas Nilsson

195
6

9

votes

2 answers

Cisco ASA Routing Issue

I am working on a lab right now and am having some issues with ASA routing. Here is the current network topology: Currently if I login to the console on the ASA or Router I can get outside to the internet no problem. The second I login to the layer…

asked Sep 22 '13 at 03:28

thefiddler

345
1
3
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9

votes

1 answer

JUNIPER: Why is OSPF adjacency breaking when I enable FBF on an OSPF interface?

I've built a test lab where I am testing Filter Based Forwarding (FBF), aka Policy Based Routing. Question will follow below, but first, the details: Below is the topology diagram: OBJECTIVE: Any traffic destined to Staging from Site 1 should route…

asked Sep 17 '13 at 18:35

NetEng76

141
7

9

votes

2 answers

What is Dec MOP and how to disable it?

Performing a packet capture I keep seeing strange "DEC MOP Remote Console" frames: No. Time Source Destination Protocol Info 141 83.557841 Cisco_57:62:a0 DEC-MOP-Remote-Console 0x6002 DEC DNA Remote…

asked May 07 '13 at 21:27

petrus

503
1
5
16

9

votes

2 answers

load-balancing difference between DNS and IP - forwarding vs redirecting

I have come across a situation that I cannot understand. We have a Fortigate firewall that we have enabled to do load-balancing across two back-end Apache web servers. A DNS name is then mapped to the virtual IP on the Load Balancer. As expected,…

asked Sep 02 '13 at 14:16

Yusuf

187
1
7

9

votes

1 answer

Label Distribution Protocol(LDP) in MPLS

I have been going through the MPLS technology recently.I have this doubt in my mind after reading some of the features of the MPLS. A---B---c | | D----E Lets say routers A,E are LER and B,C,D are LSR,we want to send traffic from A->E. I…

asked Aug 21 '13 at 09:56

starkk92

193
3

9

votes

3 answers

slot vs sub-slot?

I am trying to understand how Cisco interfaces are named, so I am reading the document Interface and Line Numbers in Cisco 1800, 2800 and 3800 Series Routers I am having some issues understanding the principles mainly because I don't understand the…

asked Aug 20 '13 at 23:55

BrunoMCBraga

821
4
9
14

9

votes

7 answers

What is the purpose of subnetting, if we have NAT?

As I know, NAT is the system, that divides IP addresses into two categories - public and private. Public represents the local network from the outside and private represents the device from the inside. Subnetting divides one IP address into the part…

asked Mar 19 '16 at 13:46

New Thing

93
1
1
3

9

votes

1 answer

ARP request with unicast MAC?

Regarding ARP requests, I got to believe that the destination MAC address was in all situations the broadcast address. Yet I got across this Wireshark capture: I just cannot understand the 3rd request from my router. Why is the destination MAC…

asked Mar 17 '16 at 19:28

PesaThe

279
3
10

9

votes

4 answers

Usage of Flow label in IPv6 header?

I have been reading the IPv6 Flow Label Specification (RFC 6437) and I would like to ask about the purpose of setting this label. In case of just using the 2-tuple (source address, destination address), the packets will reach the destination. And…

asked Mar 16 '16 at 09:17

Bionix1441

329
2
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