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Questions tagged [ios]

The operating system used on the majority of Cisco's routers and switches; a package of routing, switching, internetworking and telecommunications functions tightly integrated with a multitasking operating system. For Apple's mobile device OS, use apple-ios.

309 questions
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LACP - Up Sngl-port-Bndl Mstr Not-in-Bndl

I setup a port channel between two Cisco switches, a 6509 running ios 12.2(17r)S4 and a 5596 running nx-os 5.2(1)N1(4). Several issues arose including bad patches and broken cables, but I currently have two active links in the port channel to work…
fishpen0
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How do I know if a specific cisco router and IOS support a certain feature?

The reason I'm asking is I'm trying to set up a Cisco Catalyst 2800 series router as an 802.1x supplicant. According to this document,…
Frank
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Cisco switchport is solid amber

I have a port on my switch that is showing a solid amber light. I have tried to shutdown this port, but it still shows the solid amber. This switch is production critical so, I cannot reboot it until there is an appropriate scheduled window to do…
DChi Shaggy
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view the maximum equal cost paths configured for OSPF

How do you check if the maximum number of equal cost paths has been modified (with the (config-router)# maximum-paths command)? Is the only way by viewing the running configuration? show ip ospf doesn't seem to tell me anything about this.
red888
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Port Forwarding with Cisco SR520 IOS

I've been tasked with setting up port forwarding for access to remote desktop on a server. I'm having trouble making it work. Server IP 192.168.1.20, port 3389 The router is a Cisco SR520. It is behind our ISP's modem, which has an IP of…
James T
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Cisco IOS, Multiple WAN & Port Forwards (Outside -> Inside PAT)

I have been trying to work out how to accomplish PATing from Outside to Inside on a Cisco IOS router, in this case specifically a Cisco 2901 running IOS Version 15.1(4)M1. Firstly, the problem I am trying to solve is that we'd like external port…
Antix
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c7200 IOS 15.x-x NAT/PAT issue

My problem may be just finger trouble, but after fighting with this for a day on what should have taken 5mins, I am getting fustrated. I am not Cisco Certified at any level, just a fair amount of experience. So I am asking for help before i take a…
Random-IT
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Cisco / IOS Priority of VPN Tunnels vs EIGRP Routes

If I have two interfaces, one which gets its networks from EIGRP, and another that is an internet connection with VPN tunnels. If the same network exists for match address of the VPN tunnels and an EIGRP route, which gets priority?
Kyle Brandt
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Is there a Cisco IOS command for finding out the serial number of a switch / router?

I am doing an inventory of all of our switches and I was wondering if there's a Cisco IOS command that will return the serial number for a switch and router? Thanks in advance!
Kent Allard
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Filter OSPF routes redistributed by BGP

I am redistributing OSPF routes inside a network, through BGP. However I don't want to redistribute all the advertised routes from OSPF (specificaly the private networks) to the outside of the AS. How can I prevent some routes from being…
João Rodrigues
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Cisco IOS: Logging only debug messages on command-line

I want to have a quiet command-line such as (config)# no logging console causes. Still, I want to make use of # debug commands. It appears to me that # debug depends on syslog level 7. So I cannot have a quiet CLI and read debug messages at the same…
user2964971
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Cisco IOS: Show incoming Telnet sessions

According to show ? the show sessions command is supposed to show Information about Telnet connections. Although I'm connected, the sessions does not show up. Both devices run Cisco IOS. How can I look up current Telnet sessions? On the router…
user2964971
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How to type a £ symbol over console with Cisco IOS?

I've noticed that I'm unable to type a UK-pound symbol (£) over the serial console using Cisco IOS 12.2. The symbol instead is interpreted as a hash (#). If I open the Windows character map and copy-paste a £ into the console, it still is…
James
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Cisco AnyConnect on IOS 12.4(20)T

There are plenty of tutorials on setting up AnyConnect on an ASA unit, and a handful of links noting that IOS 12.4(15) and later support AnyConnect, but I can't seem to find any good documentation about how to setup AnyConnect on IOS; most tutorials…
natacado
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Putty: disable configuration of server terminal length

I would like to prevent Putty from setting the server terminal length so as to avoid the dreaded --More-- prompt in Cisco IOS. Please do not tell me to set length 0 in line config mode because this does not work with Putty. terminal length 0 in exec…
ThomasMcLeod
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