Questions tagged [router]
For questions about network routers, devices that forward data packets between computer networks, commonly at the network layer (layer 3) of the OSI model.
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ISR routers - difference between routed and switched ports
On a Cisco ISR router - would you say there are any benefits from purchasing an HWIC or EHWIC to connect to the next set of switches within the branch network?
For instance. Lets say Gig0/0 and Gig0/...
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Embedded routers vs. software routers in the datacentre
I've been looking for a new 'core' router to put in our new rack which is colo'd at a nearby datacentre. What I've come across is the usual Cisco/Juniper/Brocade lineup, with the usual unattractive ...
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RIP routing is broken between two routers
There are 2 routers connected something like this:
Network1 ----- (172.16.1.1/24) Router 1 (172.16.3.1/30) ------ (172.16.3.2/30) Router 2 ------ (172.16.2.1/24) Network 2
I try to add addresses for ...
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Output Drops on Serial interface: Better queueing or Output queue size?
On Internet edge routers speaking eBGP to multiple carriers and iBGP to one another, all interfaces on the LAN and WAN side are GE except for one Serial full-DS3 (~45Mbps) on each router. Although I ...
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OSPF LSA Refresh Time
Is there a Cisco command that would allow one to modify the default value of 1800 seconds (30 min) for the OSPF LSA refresh rate?
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Building new network and need 200+ wireless devices
I'm planning the network for my company's new office space. I'm not an expert so I'd like to present my plan and ask y'all nice folk to tell me if and where I'm making mistakes.
Assumptions:
Office ...
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Cisco 2600 series router logging a lot of "Memory allocation failed" errors
We are getting the below two error messages randomly on a 2600 series router. Syslog shows the router has been fine up until a few days ago. Would a reboot most likely cure the issue or is it most ...
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What is the difference between a VRF and GRF? (cisco)
I've heard about VRF's and GRF's, but was is the difference between those 2? (cisco)
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How can I log authentication errors in 3G routers?
What command (debug) can I use to see authentication errors on a cisco 3G router specifically for the 3G connection?
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What is the use of a tunnel interface on a cisco router?
What is a tunnel interface used for on a cisco router?
What is the difference between setting up a VPN connection and a tunnel interface; or does this serve the same purpose?
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DHCP relay problem on interfaces secondary network
A secondary network was configured on an interface of a Cisco 2621 router and the ip helper-address commands put in place but no clients of that secondary network could pull DHCP addresses. We swapped ...
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Is it necessary to use layer 2 switches with microwave point-to-point links?
For a university project we are designing a network across 3 buildings for a small business. I've decided to implement a microwave point-to-point to connect each building.
A lot of microwave point-to-...
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Cisco 1921 security features in the default bundle
Bought a Cisco 1921 router without any additional modules. This is the first time I'm using a non-home router. What security features should I enable so that users are relatively safe when using the ...
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How to connect 5 different networks together?
I have a network consisting of three servers in a data center, all of which are connected to each other via a switch.
In addition to this I need this network to access 4 additional networks, most of ...
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What is backpressure in the context of routers?
There are several references to backpressure as regards to the internal bandwidth and switching fabrics of routers and switches. What exactly does backpressure mean, and what are the real world ...
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