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1500 questions
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1 answer

Does RIP to BGP redistribution for an MPLS VPN make sense?

A customer was recently adamant to perform redistribution of their RIPv2 routes into BGP. This is over a standard MPLS VPN solution whereby the CE routers are fully managed. This approach feels cumbersome and sub-optimal. I would prefer to opt…
MattE
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What is the difference between VPLS vs Layer 2 VPN?

Apologies about the very open ended question, but I am struggling to differentiate between VPLS & L2 VPN's. I'm aware they both run over MPLS, but I can't find any documentation or sites that clearly explain what either are etc. We've recently…
Oli
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Cisco WLC: Per user authentication, many Vlans, few SSIDs

We have a simple problem. We want to restrict our wireless users to certain business websites based on their username when they login. We have many kinds of wireless devices: voip phones, cell phone, laptops, barcode scanners, and tablets. Suppose…
user2631
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SNAT vs PBR for Server Load Balancing

In an one-armed SLB configuration, SNAT is used to force return-traffic to pass through the SLB. This has one negative: simply that web logs cannot capture the true client IP unless passed in XFF (X-Forwarded-For) header and the web server is able…
generalnetworkerror
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Difference between ping timed out and destination host unreachable

I'm pinging from a Windows Box to a device that I rebooted. PS C:\Users\administrador> ping 192.168.2.10 Pinging 192.168.2.10 with 32 bytes of data: Control-C PS C:\Users\administrador> ping -t 192.168.2.10 Pinging 192.168.2.10 with 32 bytes of…
Felipe Oliveira
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CISCO ISE Identity Management Group assignment

The Scenario in Brief Three types of devices can exist on our wireless networks: AD joined, corporate owned (Windows PC/Laptop/Surface) Non-AD Joined, corporate owned (iPad/Chromebook and their flavors) Non-Corporate Owned, non-AD Joined…
JBC
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2 answers

Cisco GET VPN Configuration - Best Practices/Can the loopback be used?

I am in the process of re-ip addressing a large number of remote locations, all of which are using a Cisco GET VPN/GDOI configuration for encryption of the traffic. In the process, I also wanted to review the configuration to ensure we were…
Brett Lykins
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3 answers

How does a router learn about networks that can be reached from its interfaces?

I was studying, and I got stuck in trying to find out the best way to answer this question: explain how a router learns about networks that can be reached from its interfaces and how it routes packets. You should assume that the router has just…
Pyrosnack
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2 answers

IGMP snooping and link-local multicast addresses

I have a network which has many devices sending data to 224.0.0.225 on a VLAN which spans multiple switches. Each device (aprox 12 of them) is sending reporting data at roughly 500-600 kbps. Each port on the VLAN, whether the receiver sends a join…
knotseh
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Questions about datacenter switching and TRILL

In a interconnection of two datacenters, Is TRILL a long-term solution ? Is the TRILL implementation of Cisco (FabricPath) interoperable with other manufacturer ?
AdrienF
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6 answers

Best practice - Set static IP in device or router?

Pretty simple question. What is the industry best practice? In a small business which has computers which require static IP addresses is it better to set static IP addresses for devices on the devices themselves, or in the router/managed switch? All…
Joshua Michael
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3 answers

Placement of firewall for VPN RA and L2L tunnels

For Remote Access (RA) and LAN-to-LAN (L2L) VPN, I currently operate a pair of Cisco VPN 3005 Concentrators tied to Internet edge routers on the outside and the inside tied to an internal pair of PIX 535s on what is the firewall outside interface…
generalnetworkerror
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3 answers

Running Cat 7 STP cables in the same cable trays as 3-phase power cables

I am doing some work in a factory that is quite new, and have been asked to terminate some network cables - simple enough. However on looking up at the cable trays, which are suspended from the ceiling, I see in various places, "Someone" has run…
Digital Lightcraft
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Wifi dropping randomly on Cisco AP-1602

I have a single Cisco AP-1602 broadcasting 3 SSIDs in a small office. Some of my team are complaining about random drops in network connectivity. (Over 3 days, I've had 3 different users complain about drops every 10 minutes or so.) What could be…
SAR622
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About the inside local and outside local and inside global and outside global

I have some concept problem with the NAT. Here is the Cisco definition for the local and Global and the NAT operation. Local address—A local address is any address that appears on the inside portion of the network. Global address—A global address…
Samuel
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