Cisco is a major provider of switches and routers to most medium and large companies. Cisco devices often run IOS or NX-OS. This is a generic tag to be used when no more specific tags are available. See the partial list of tags in the full Tag Wiki.

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29 views

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, ...
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0answers
49 views

The proper way to create a VPN tunnel with one static host and one dynamic host

Note: I have never attempted this before trying today but I knew it was possible due to research online. So I gave it a try and got it to work... I have one static host (let's call it HOST_S) which ...
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1answer
62 views

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 ...
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1answer
51 views

Can I add delay on gigabitEthernet type of interface (cisco switch)?

I learned that I could introduce delay on serial interface by using the command delay 'yyyyy' Can I also do this if I am using gigabitEthernet interface?
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0answers
35 views

drop ingress packets cisco router 2921

I am new here. I really hope you can help me solve this problem. I am testing the BFD feature of my deviceA, and I do not want to use a link simulator in doing so. I was able to drop packet in egress ...
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1answer
83 views

What does this Cisco Router firewall configuration mean?

I have a Cisco 881w that I have attempted to set up a very basic firewall on, but I am not convinced I have done this correctly. Below is the configuration pertaining to the firewall and access lists ...
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1answer
36 views

Cisco ASA access-lists redundant entries

I need to modify existing configuration of the CISCO ASA. While analyzing the configuration I noticed something that looks redundant to me. I would like to see if somebody can confirm my doubts. ...
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2answers
139 views

Problems with installing Cisco ASDM on a Windows Server 2008 R2

I try to get this as short as possible. My company has a computer with the Cisco ASDM-IDM Launcher on it with which we access our Firewall (Type ASA 5505). Now we want to install the ASDM on our ...
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0answers
90 views

cisco 1800 series NAT with secondary IP

I have some troubles doing NAT. If I set up NAT for a particular port, the server replies, but it does so from a different IP address, (specifically from the main IP). If I set up NAT to B.B.B.B, the ...
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1answer
82 views

Getting a VLAN IP address

is there anyway to get a static IP address from a VLAN port on a CISCO switch ?. what I'm looking for is a software weather it's a Linux or windows software when I plug Ethernet cable from my laptop ...
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1answer
33 views

Notation used in Router configuration diagrams

I was listening to an MPLS tutorial on youtube.MPLS tutorial I came across this diagram. I am not that familiar with router configuration.My questions are as follows. 1) what does G1/0, G2/0, G3/0 ...
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1answer
316 views

Weak and ephemeral Diffie-Hellman key on CISCO PRIME

Can't login on Cisco Prime web interface due to this error on chrome. How to solve?
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1answer
21 views

Cisco Nexus 1000v %IPQOSMGR-4-QOSMGR_WARNING_MSG

I have a Nexus 1000v installation running for well over a year now without any problems. Recently I noticed that I keep getting a warning every few minutes on CLI. 2015 Sep 7 15:13:53 n1kv ...
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0answers
142 views

Cisco ASA 302014 syslog explaination

Can someone please explain the format of cisco asa syslog 302014 and more specifically the difference between idfw_user and AAA user? The message format is shown below: Error Message %ASA-6-302014: ...
1
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1answer
127 views

Is it possible to set up WAN connection on a VLAN (Cisco Router)?

I'm trying to set up NAT load balancing (or failover) with two ISPs on my 1941 router. The router has only two WAN ports and 4 EHWIC ports (which are basically switch ports). One of the WAN ports is ...
1
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1answer
325 views

How to choose VDSL firmware on a Cisco 887VA router?

On Cisco ADSL routers, there is a wide choice of modem firmware releases available, as well as IOS releases; each IOS release comes with its built-in modem firmware, but you can override it with a ...
1
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1answer
92 views

Asterisk behind Cisco ASA 5505

I'm in the process of upgrading from an old WRT54GL running Tomato to a Cisco ASA 5505, versioning as follows: Cisco Adaptive Security Appliance Software Version 9.1(5)21 Device Manager Version ...
1
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1answer
34 views

IP Address secondary transpose

I am bit new to cisco and I have assigned 5 static IPs to my serial interface 0/0. I have NATed email in via one of the secondary IPs to the server. However, when I try to send mail out it's sending ...
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0answers
42 views

Issue Cisco PIM and multicast routing

I'm in the process or redesigning an IPTV headend that is running on mainly layer 2 (IGMP snooping) to layer 3 (Multicast routing using PIM Sparse mode), this will all be done mainly using cisco kit, ...
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1answer
37 views

How would I access a Cisco router for configuration/management over the public internet

I want to connect a cisco router (2950 series) to my normal broadband router supplied by my ISP. I want to test whether I can access the router over the public internet for configuration/management. I ...
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0answers
22 views

Vyatta Nat Rule Help Translating From Cisco ASA Rule

I'm fairly new to Vyatta and need advice on how to translate the following rule example from a Cisco ASA to the Vyatta. static (dmz2,outside) 192.168.254.0 192.168.254.0 netmask/24 How do I ...
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1answer
27 views

VMware systems not working on SRW2048 swtich

I received an old Linksys SRW2048 gigabit switch and have used a straight-through serial cable and the console port to reset the flash config back to defaults so that it is configurable for our ...
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0answers
57 views

Cisco ASA 5505 access external IP address from internal

Got a bit of a head scratcher. ASA Version: 8.3(1) ASDM Version: 6.3(1) So I have an ASA 5505 with 3 interfaces (Inside, outside and Hosting). The inside interface has the IP range of 10.0.0.X and ...
3
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1answer
48 views

Cisco IP Redirection (static NAT?) for non existant IP Range

We are moving office and our managed service provider has let us down badly. We have a Cisco 4500 stack with 5 VLANS configured of interest. These are: interface Vlan200 description FLOOR0 Gateway ...
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0answers
57 views

Error: Can't create new inside entry - forced_punt_flags: 0

I have a router Cisco 3725 and setup NAT on this but when I run command debug ip nat detailed it show error "Can't create new inside entry - forced_punt_flags: 0" My router config as follow: Current ...
2
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1answer
122 views

ASA Site-to-Site VPN Failure

We have a series of remote sites connecting to our main site using site-to-site VPN over Cisco 5505s. Every remote site works fine, except one. What is unique about the failing one is that its IP ...
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0answers
191 views

wpa_supplicant doesn't reach freeradius in 802.1x eap-tls wired

I want to setup a 802.1x EAP-TLS connexion with freeradius, wpa_supplicant and a Cisco Switch My network : supplicant eth0-----f1/1 SWITCH f1/0-----eth1 Freeradius the SWITCH is an emulated Switch ...
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0answers
28 views

Cisco 3900 Series router not booting

This started after trying to enter password recovery mode and rebooting. It rebooted the one time and started to load the ios but had some sort of TraceBack/Exception on the screen. I reset the power ...
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0answers
33 views

Cisco 1000BaseT SFP modules in a 3750 overheating

I have a 3750 responsible for switching in my DMZ. Every once in a while one of the gigabit links will go down although ios and the server attached to it report the link is up (activity lights, etc). ...
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0answers
40 views

Cisco ASA l2l tunnel established, can receive pings but cannot reply

I'm a bit new to managing a Cisco ASA appliance and I'm doing my best to learn, however I got a problem here. Long story short, we are trying to connect a hospital's ADT HL7 feed to our remote ...
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0answers
71 views

Cisco Split Tunnel AND Full Tunnel VPN configuration

I have split tunneling configured on my Cisco ASA 5505 security plus licensed firewall, and I want to know if I can have a split tunnel group and a separate group for full tunnel traffic? Can both be ...
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0answers
101 views

tcp previous segment not captured when NAT

I have a client request web service on a server behide NAT. My client IP is 10.54.10.193 NAT address: 10.54.28.183 Server address: 62.209.39.203 When client request web service on server we have TCP ...
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1answer
42 views

Cisco spanning tree commands

I have been immersing myself in the Cisco STP documentation, but for the life of me I am not able to find anything relating to the toppology changes (aka ports logically going down) when certain ...
1
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1answer
29 views

Cisco VSS failure.

We have two 6500s running with VSS. We have a switch with dual uplinks. Each uplink goes to a different 6500. If the VSL between the 6500s goes down then they both become active. This breaks the ...
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4answers
128 views

CISCO Home Lab Router not NATing [closed]

I hope someone can help me. I have a AT&T 2wire gateway with a cisco router attached to port 3 of the AT&T 2 wire. I'm using the CISCO as a separate network and lab. Below is sketch of my ...
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1answer
95 views

Why is my DHCP pool not working?

I'm trying to create a configuration and it's doing most of what I want it to do, but the DHCP pool isn't assigning addresses. Here's the config so far: enable config t hostname xxxxxx enable ...
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0answers
18 views

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 ...
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0answers
225 views

Want to Ping/access my Public Ip from Private IP, NAT firewall

One of my server is having private IP x.x.x.x and the Public IP for that server is 1.1.1.1 now when i try to Ping my Public IP from same server its not working, Firewall is NAT enabled. I want to ...
0
votes
1answer
24 views

How do I troubleshoot a VPN connection that won't forward DNS requests?

How do I troubleshoot a VPN connection that won't forward DNS requests? My network configuration without the VPN running works as desired. I have a Centos front-end NAT'ing outbound requests via ...
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1answer
24 views

Two network routing with CISCO 878

My company uses the 192.168.10.0/24 subnet and 192.168.10.235 is for all intents and purposes the gateway to the Internet. We have an extra VDSL line with a "home-style" modem/router that we want to ...
1
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1answer
45 views

Multiple public IPs routed via Cisco ASA to Proxmox VMs

I have a network with IP 199.221.2.136 (/29). I would like the Cisco ASA5505 [1] to work on .137 as router and use two public IPs (.138 and .139) on two VMs on a Proxmox server. Not sure how to route ...
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0answers
86 views

Unable to ping or RDP to servers via remote access VPN after DNS server change Cisco ASA

We have a setup here were users can remote into our network via VPN and then remote to their desktops. This was all working fine. The other day, we moved DNS from one server to another. I changed ...
3
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0answers
72 views

Opennms - Physical interface update on Cisco Switches

I'm using opennms version 16.0.2-1 on ubuntu server 14.04 LTS. I'm configuring some cisco switches to send traps to openms. The traps are notified to events in opennms, if i put a physical ...
0
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1answer
27 views

Cisco arp inspection in 'log only' mode

Is there a ready way to enable Dynamic Arp Inspection (DAI) without having it in blocking mode to begin with? Failing that is there a good way to gather arp statistics from each interface over a ...
0
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1answer
132 views

D-link DAP-2695 VLAN configuration

Well... I thought I had this all figured out... I am essentially reopening this same question I had 2 years ago (Reference: D-link DAP-2590 VLAN configuration) I got it all figured out back then and ...
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2answers
336 views

Cisco Catalyst 2960 Switches - Can I reverse the air flow?

I have some equipment that will be moved to a new datacenter soon. At the current datacenter, the switches are mounted in the back of the racks so the air flow for the switches is reverse in ...
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1answer
34 views

C891FW-E-K9 Memory upgrade

I have a C891FW-E-K9 ISR with ios c800-universalk9-mz.SPA.154-3.M-2. From what I can gather, the memory requirements for that image is 512MB but from "show version" my router seems to only have 384MB ...
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1answer
54 views

FusionPBX Failed(405) on Cisco 303 IP phone

Since yesterday, my phone started throwing a Failed(405) error when trying to register to a FusionPBX server. I have tried resetting to factory settings and reinstalling the FusionPBX server on ...
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0answers
20 views

Cisco 1941 HWIC Prohibitions

I recently upgraded our Cisco 1941/K9 router (see figure 4 here) to include an additional HWIC (HWIC-2FE) without issue. During my research for an applicable module to provision the necessary ports I ...
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0answers
52 views

cisco UCS UCSM xterm vt100 error when connecting to IOM, how do I change term type?

I know this is no big issue but it just annoys me. I have UCM pair, when connected to A I can connect through to local IOMs with no issue but when connected to UCM-B if I jump to one it's IOMs I get ...