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65 Example Questions

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up vote 35 down vote
BGP routes are being advertised from neighbor but don't show up in the routing table. What am I missing?
added by Jeremy Stretch Mar 14 '13 at 22:42
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up vote 27 down vote
Switch port is configured for voice and data VLANs, but both the phone and PC are getting IPs from the data VLAN
added by Jeremy Stretch Mar 14 '13 at 22:28
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up vote 23 down vote
Design Dilemma - Benefits of Dual homing a server or dual homing a Nexus FEX switch?
added by Pandom Mar 14 '13 at 23:30
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up vote 23 down vote
What are the recommended steps to troubleshoot a IPsec tunnel that won't come up?
added by Will Dennis Mar 15 '13 at 1:46
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up vote 19 down vote
I'd like to see if incoming traffic from a remote VPN device is making it to my ASA's outside interface? Is there a way to capture traffic?
added by packetologist Mar 14 '13 at 23:43
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up vote 17 down vote
What are recommended methods of conducting a wireless survey in-house?
added by Rowell Mar 15 '13 at 2:18
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up vote 17 down vote
What is best practice to connect vmware esxi server to cisco swtich? VST,VGT,EST?
added by edrtz Mar 15 '13 at 2:50
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up vote 15 down vote
Office client wants more resiliency for their Internet connection, but doesn't have the budget to multi-home their IP space. What are their options?
added by SimonJGreen Mar 15 '13 at 7:58
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up vote 15 down vote
How can I monitor the effectiveness of my QoS configuration?
added by AlexTsr Mar 15 '13 at 17:38
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up vote 13 down vote
At what point would you start using MPLS at the core of your network instead of just VLANs?
added by SimonJGreen Mar 15 '13 at 7:59
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up vote 12 down vote
Banging my head against the wall. Why won't my IPsec VPN tunnel come up?
added by Jeremy Stretch Mar 15 '13 at 1:51
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up vote 11 down vote
I'm evaluating various WAN technologies to connect my DR site to my main DC. What should drive my decision between Layer 2 vs. Layer 3 connectivity?
added by Blake Johnson Mar 15 '13 at 2:41
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up vote 11 down vote
What's a good way of filtering my inbound BGP tables from peers to avoid false routes?
added by SimonJGreen Mar 15 '13 at 7:56
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up vote 10 down vote
Replacing a Sonicwall PRO 4100. Is an NSA 2400 a sufficient replacement or should I go bigger?
added by Jeremy Stretch Mar 14 '13 at 22:35
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up vote 10 down vote
Need help converting this IOS OSPF config to Junos
added by Jeremy Stretch Mar 14 '13 at 23:10
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Good style of question - something that will promote discussion. Would need to be clear that an emphasis on learning and not straight conversion is most important. – Pandom Mar 14 '13 at 23:26
@Pandom, agreed - I end up needing to do translations between reference configurations for ASA's and other firewall vendors as well. – Blake Johnson Mar 15 '13 at 2:37
up vote 10 down vote
Netscreen firewall not accepting VPN dialup users with preshared keys - only works with certs.
added by lunistorvalds Mar 14 '13 at 23:14
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up vote 10 down vote
My SRX is configured for IPv6 router advertisements, but clients are not auto-configuring quickly. How can I speed this up?
added by lunistorvalds Mar 14 '13 at 23:18
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up vote 10 down vote
I've set up authentication for EIGRP on my Cisco 3750s but I can still see routing traffic including routing updates in clear text. Why is that?
added by packetologist Mar 15 '13 at 0:14
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Is there a better way to ask this question? I know some confusion comes in sometimes when people think that authentication in the routing protocols encrypts the traffic it sends. This is not the case and truly only authenticates the peer to allow peering between the two devices. – packetologist Mar 15 '13 at 14:18
up vote 10 down vote
A remote sites ASA is dual-homed: IPSEC tunnel between it and the central office moves between providers unexpectedly. Constant re-neg of tunnel.
added by Scott B Mar 15 '13 at 1:52
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up vote 10 down vote
What effective tools and/or methods have you employed to lab test vendor data sheets?
added by Pandom Mar 15 '13 at 1:56
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up vote 10 down vote
What routing protocol should we use? EIGRP or OSPF or ISIS?
added by twidfeki Mar 15 '13 at 2:40
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up vote 10 down vote
How can I analyse the distribution of inbound/outbound traffic by source/destination AS number on a Juniper MX5?
added by SimonJGreen Mar 15 '13 at 8:01
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up vote 10 down vote
When a star topology is becoming cost prohibitive at the core, what is the best way to handle east/west traffic between racks?
added by SimonJGreen Mar 15 '13 at 8:02
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up vote 10 down vote
I have a Cisco device with too less Flash space for the IOS which I want to add on it. What solution do I have to be able to load the IOS?
added by Calin Chiorean Mar 15 '13 at 8:10
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up vote 10 down vote
How to setup a private looking glass to monitor BGP over MPLS network?
added by user80500 Mar 15 '13 at 11:26
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up vote 10 down vote
When multicast client has obtained the first data packed (pim sparse) and switched to SPT, what happens when another multic source appears on the net?
added by Pavel Glushkov Mar 15 '13 at 13:16
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up vote 10 down vote
How can I recover a Cisco IOS switch from rommon?
added by NetDonkey Mar 15 '13 at 13:18
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up vote 10 down vote
What are the steps to troubleshoot the PIM join process?
added by dschuemann Mar 15 '13 at 13:41
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up vote 10 down vote
How does the bridge assurance prevent loops in STP?
added by Kveri Mar 15 '13 at 14:21
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up vote 10 down vote
Why is EIGRP and RIP uses IP TTL of 2?
added by Kveri Mar 15 '13 at 14:34
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up vote 10 down vote
My IPSec VPNs establish but sometimes fail re-key, where should I start looking?
added by iggdawg Mar 15 '13 at 14:37
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up vote 10 down vote
How can I set up SSL VPN / Anyconnect on an IOS router for use with mobile devices?
added by iggdawg Mar 15 '13 at 14:51
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up vote 10 down vote
How to troubleshoot connectivity through Checkpoint firewall ?
added by irom Mar 15 '13 at 16:41
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up vote 10 down vote
What are the alternatives to OTV (Overlay Transport Virtualization) for those who can't use IOS XE/NX-OS?
added by mastrboy Mar 15 '13 at 16:45
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up vote 10 down vote
How to quickly find object-group name where specific IP address belongs using only CLI on ASA ?
added by irom Mar 15 '13 at 16:45
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up vote 10 down vote
How to troubleshoot traffic congestion between a Cisco Nexus 5K and a 2K?
added by Snowscan Mar 15 '13 at 17:06
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up vote 10 down vote
How do I create a trunk from a VSS pair to an ASA with no native VLAN assigned on the trunk?
added by TuxTheMadPenguin Mar 15 '13 at 18:08
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up vote 10 down vote
In a situation where both 802.1x and LLDP are active on a switch port, is the LLDP visible before 802.1x auth succeeds?
added by TuxTheMadPenguin Mar 15 '13 at 18:11
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up vote 10 down vote
In what situations should I be using data center bridging (DCB) and priority flow control?
added by dlux Mar 15 '13 at 19:54
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up vote 10 down vote
When an address is translated with NAT, exactly what determines the port that the translation is given?
added by codey Mar 15 '13 at 20:17
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