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1500 questions
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3 answers

In networking, is there a word for the first n bytes of an IP address?

I have two IP addresses. They share an IP address to the nth byte. Is there a word that effectively says that they have the same IP address up to the nth byte? Are there different words depending on how many successive bytes they have in common?
Adam Jensen
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Need help to understand whats transmited over SNMP when i use the ipNetToPhysicalEntry OID

I need a little bit of help to understand what Information the ipNetToPhysicalEntry OID 1.3.6.1.2.1.4.35.1 exactly includes. I thought its a combination between the Neighbor Cache and the ARP Cache, but when i read this OID over, lets say snmpwalk,…
eragon-2006
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4 answers

cisco 2960G won't boot and no console output

I have three Cisco 2960G switches that I pulled from a working environment. All three of them are experiencing the same problem, so I have a hard time believing they have all simply failed. Here's the problem: When I plug in the power, all the ports…
longneck
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6
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1 answer

WIPS Alert: Reason "NoProfile" detected on AP

I'm trying to understand how I should act on a trap I'm receiving from our WLC WIPS Alert: Reason "NoProfile" detected on AP MAC: 00:1a:30:00:00:00, AP Name: West128_c3602i My searches for the meaning of this message have not turned up anything…
Mike Pennington
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6
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3 answers

LACP from Cisco 6509 to Force10 S48-10 - in default VLAN1

A client has the following configuration: The entire network is on VLAN1, with the subnet 172.16.0.0/16 - performing a redesign of their network is not an option at this point, as they're a 24/7 facility that cannot currently afford downtime (yeah,…
Panther Modern
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6
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1 answer

Connect Multiple VLANs which reside on same L3 Switch

Introduction The steps described in this manual have been applied in order to enable the connection between multiple VLANs which reside on the same switch. Two VLANs have been configured. VLAN 1: ip address 10.1.2.1 255.255.255.0 VLAN 2: ip address…
030
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6
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3 answers

Ethernet Cable Orientation

I'm in an A+ course and was just working on wiring Ethernet cables. I was wondering, will an Ethernet cable function if the wires are reversed? Say instead of wiring 568B like striped orange, orange, striped green, blue, striped blue, green, striped…
Cody
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6
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4 answers

Cisco SFP module: Determing Priority?

I have two 3750 Cisco switches that have two fiber cables/sfp modules hooked up on each. The second fiber is just for redundancy. I have installed two new 3750X switches on the rack for the upgrade, and I would like to use these existing fibers…
Keven Culp
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How to use "Pattern Recall" pattern matching in Regex

I'd like to match the 0's in this output, specifically using "Pattern Recall" feature mentioned in Cisco documentation. The pattern is: Gi4/3 0 0 0 0 Gi4/4 0 …
Pseudocyber
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2 answers

Telefonica Looking Glass?

Is there an openly accessible Looking Glass for Telefonica ? None of the "official" URL's listed hereunder point to a functional Looking Glass server http://www.telefonica-wholesale.com/es/herraIP.html (from…
user887
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4 answers

Which is the Preferred location of an IPS within a network?

In the context of protecting a campus network, which is the Preferred location of an IPS within a network? Within an ISR router IPS as a separate device Within ASA
NAVEEN GEORGE
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6
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5 answers

How to solve problem with two devices with the same MAC address, connected to the switch?

I have two devices with the same MAC address (don't ask why, I can't solve it by replacing those devices or modifying MACs) connected to one switch. Of course both of them get the same IP from DHCP and I'm unable to communicate with them. I need…
Tomasz
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1 answer

The purpose of last database description packet sent by the slave router during adjacency process

I've been learning OSPF adjacency process using packet tracer. The topology is a simple point-to-point network - two routers are connected with ethernet cable(fastEthernet 0/0 on both ends). Here are the logs of the slave router: Send DBD to 2.2.2.2…
MyrzabekK
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6
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4 answers

60 devices on a /29 network

My company asked me to set up a network with 60 devices (all have MAC addresses and use IPs, but they are not all computers), there is a 3rd party company that will maintain the network. They are also responsible for their internet access. I…
GTomaras
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SNMPv3 Setup - Cisco 3750

I am not a network guru by any means but need to setup our router/switch to use SNMPv3. I am installing What's Up Gold on our system and configured the settings (changed for this post) as follows: Username: testusername Authentication Protocol:…
JMeterX
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