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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How to properly add guest essid to cisco AP and asa5505

I have an ASA5505 configured with an inside and outside interface and DHCPD for the inside interface. Currently I have a cisco AP (forgot the model) broadcasting only a single essid for the internal ...
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5answers
6k views

ASA 5505, is BGP supported?

I need to configure BGP on an ASA 5505, according to certain sources it isn't supported, yet I can find resources on the internet giving information on how to configure BGP. I'd really like an ...
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2answers
54 views

Can a cisco router execute a command itself?

I'm experiencing a problem with my Cisco router 1900 Series, the router sometimes stop routing packets, and when i log into it and show the running-config i see no ip routing executing ip routing ...
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325 views

Incoming Connections with Two ISPs and Cisco 2911

I am a relatively beginner Networking Guy and I have managed to set up a Cisco 2911 router with two ISPs (no BGP), NAT and route-maps (although I don't really understand them) to the two up links with ...
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1answer
47 views

Cisco IOS Show | Filter | redirect

I am new to Cisco IOS and I have one question that I have come across. Please reference this thread. Reference The answer to that thread states that in Cisco IOS you can run a command, filter it down ...
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1answer
117 views

Cisco Router not displaying DHCP client hostnames

I've got a branch office configured to issue IP address from a Cisco Router (IOS 15.0). The router is successfully issuing DHCP addresses just fine. My questions is that when I issue the command "sh ...
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2answers
70 views

Possible to use a console cable from a Cisco ASA and use it interactively with ESXi?

I'm creating procedures to deploy a Cisco ASA and an ESXi machine to remote locations where no local tech contacts are available. I think it may be a wise idea to connect the console cable from the ...
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1answer
153 views

Cisco 7604 router runs out of memory when loading the IOS image, yet runs a different image with similar reqs

I am experiencing an unusual memory issue with a Cisco 7604 router, specifically the memory on the Supervisor Engine (SUP32-GE-3B) and how it pertains to IOS requirements. I was preparing the router ...
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1answer
72 views

can anyone show me how can i fix error with my NAT config

Can anyone help me with my packet tracer problem? My network 2 buildings (each building has 3 vlans) on the same side and it has 2 sides, between is internet. I finish with DHCP and now I try to ...
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1answer
1k views

VPN and overlapping subnets

I have a number of Cisco site-to-site VPNs between using ASA and Pix devices established for my clients. This is a hosted application and I need for the entire address range on the client's network to ...
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57 views

my cisco 877 has problems to adsl syncing?

I have a cisco 877 modem/router but I have some problems to configure it for my adsl. When I plug in the rj11 cable, the "CD" led begins to blink but it does not stop to blink, imho means it has ...
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1answer
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Can I regenerate the rsa key for SSH access to a Cisco router? Or should I completely erase the SSH config?

I have a production 2691 that I administer via telnet. I'd like to change that to SSH. Looking at the config, it looks like there have been keys generated in the past. I think the history here is ...
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1answer
230 views

How to install and run Puppet Device in order to configure Cisco Switches and Routers?

According to this documentation it should be possible to configure a Cisco Switch by using the Puppet Module Device. Where could this module be found? Is this module restricted to Puppet ...
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2answers
102 views

Point of Shared Secrets on RADIUS Servers over a Cisco Switch

I was wondering what the point of Shared Secrets are on RADIUS servers if I set the secret in the Cisco switch configuration. If the supplicant wanting to be authenticated does not have to know it, ...
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1answer
3k views

IPsec Tunnel Between Cisco and XP, Quick Mode fails When Initiated By Router

I have been trying to set up a IPsec tunnel between a router and my Windows XP box. The router is 192.168.254.30, and the XP machine is 192.168.254.128. However, I can't seem to get the tunnel ...
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1answer
340 views

Cisco ASA 5505 No LAN access through VPN

I have been fighting with this ASA 5505 for a days now. I am verly new to networking and need support by the community! I have completely configured the CISCO 5505 allowing me to browse the internet ...
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2answers
3k views

Cisco Aironet 1200 (AIR-AP1231G-A-K9) issues

I bought a Cisco Aironet AIR-AP1231G-A-K9 off of ebay and am having issues with it. The first and most alarming issue is the cycling of the status lights. I read the manual and it does not show that ...
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1answer
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How to configure a Cisco Catalyst 2960 to synchronize with an NTP server

I would like to synchronize a Cisco Catalyst 2960 series switch with a publicly available NTP server such as time.apple.com. I have reviewed the knowledge base article here: Catalyst 2960 ...
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1answer
665 views

Cisco ASA: port forwarding to different IP depending on client IP/subnet outside

I have Cisco ASA 8.2(5) and would like to configure port forwarding. Cisco ASA has 2 interfaces: outside with IP 192.168.57.2 inside with IP 192.168.1.1 I have two subnets reachable through ...
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1answer
61 views

RADIUS authentication requests not relayed to RADIUS server

I am trying to set up a RADIUS server for 802.1x NAC over a Cisco IE 3000 Network Switch, using freeRadius to implement it. I know the switch knows where the RADIUS server is because I set up the ...
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3answers
304 views

Having ssh access only, determine if the device is router or a switch (Cisco and Juniper)

There are some Cisco and Juniper devices on our network that I need to make a python script to determine what they are: switches or routers. I have ssh access, so I can show version and parse ...
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2answers
804 views

MTU between Juniper and Cisco, cause of packet loss?

This office has a network consisting of Cisco Catalyst and Juniper EX L3 switch. Cisco Router and Juniper L3 switch share a OSPF area in between them. Hosts on Juniper side are running FTP servers ...
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1answer
307 views

Packet loss on between firewall and uplink?

I have a moderately complex network topology between my external firewall and the internet, as shown below. Every so often - I haven't found a pattern yet - we're getting a significant degree of ...
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1answer
111 views

Version of IOS for Cisco 2900 series? [closed]

Can someone please provide the current version of IOS for the Cisco 2900 series router? I'm having trouble figuring this out based on Cisco's documentation. Thanks.
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74 views

Cisco ASR 1001 RTU licencing - not applying correctly?

We're in the middle of deploying a Cisco ASR 1001 for use with a GRE/IPSec VPN tunnel. Whilst we've got the device we're waiting on e-delivery of the licences however looking at: ...
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133 views

Untangle running on ESXi sending tagged VLAN to Cisco switch not working

basically here is my setup: [Host A] = A hypervisor running ESXi 5.0 [Switch A] = A Cisco 2960-S Series 48 port switch [Switch B] = A Cisco 2960-S Series 48 port switch [P-Router] = *A physical ...
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5answers
1k views

Are Cisco admins expected to understand classful networks?

While studying for the CCENT exam, my reference materials have made an alarming number of references to class A/B/C networks. Thankfully they just treat Class A/B/C as shorthand for /8, /16, and /24 ...
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1answer
42 views

PoE from 2960 without Layer 1 Connection

I'm attempting to use a Cisco 2960-X (LPS-L) to provide power for a some Nexus 7 tablets (via a TP-LINK PoE Splitter). The issue is that without some actual device connected to the LAN port of the ...
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1answer
70 views

Cisco ASA VPN with static addresses

We have a group of machines that connect via the AnyConnect VPN software and get assigned a specific IP address. We then have software that sends data to that machine based on that IP. However, we ...
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116 views

Cisco ASA Access anyconnect from inside IPsec tunnel

I have a Cisco ASA on a dynamic WAN IP with a IPsec site-to-site tunnel to a remote linux host in a datacenter with a static WAN IP. All non local traffic is tunneled and the datacenter end is the ...
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3answers
1k views

Native VLAN mismatch and missing VLAN?

I'm trying to wrap my head around what exactly is going on here with a new site's configuration of their networking stack. This particular piece I am working is pretty simple but I having a hard time ...
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2answers
63 views

Cisco IOS - Stuck in Read Only Mode

I can't figure out what happened but I can not enable privileged mode in my Cisco 3750. At first, I tried: enable to enter EXEC mode. My password would not work and it kicked me out after 3 ...
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218 views

Cisco ASA 5505: PAT / NAT between 2 IPSec Tunnels

I've the following Setup: Customer <-> HQ <-> Branchoffice The Customer has a 192.168.1.0/24 subnet. On the HQ only the VPN Gateway is in my context, 172.20.10.1 . And on the Branchoffice ...
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1answer
106 views

Does Cisco IOS support the use of variables in its configuration?

I'm configuring a Cisco IOS (version 15) router, and I need to use the same values in multiple places; in this case, I need to configure the router's name servers (ip name-server <address>) and ...
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1answer
126 views

Network latency caused by incorrect cable?

Our team recently setup a new network and now we are experiencing network latency issues. the flow of traffic is as such: modem -> router -> packet shaper -> cisco3750 switch from router to packet ...
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1answer
492 views

Port Forwarding on Cisco Router

I'm a Cisco newbie, have the 1841, with two ethernet interfaces: interface FastEthernet0/0: Internal Desired destination IP: 186.67.181.140 interface FastEthernet0/1: External World IP ...
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1answer
2k views

Fail-over VPN with two ISPs and Cisco ASA 5500 Series

We have a couple of branch offices that need to connect to a main site. We plan to use Cisco ASAs 5515 to establish VPN connections. We would also like to have 2 ISPs at each location to make the ...
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2answers
2k views

Script SSH to router and “enable” and run commands

I have a script that will ssh to a list of routers and run commands from commands.txt. I want to enable after I connect to the router through ssh before I execute the rest of my commands in ...
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2answers
399 views

Cisco ASA 5505: Reach outside DNS address from inside

We use a Cisco ASA 5505 at our company. We have a dns A record (home.company.com) pointing to the external IP. In the ASA 5505 the http-port (80) is forwarded to an inside web server. No problem ...
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1answer
177 views

Text on Cisco ASA console is garbled/missing letters

I've actually looked up a number of solutions for this problem and none of them work. There's this Cisco ASA 5505 that I'd like to use, that outputs mildly garbled text with missing characters. I did ...
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0answers
142 views

Why is Router IP Address Repeated in Trace Command?

I have a network that is a branch of our central office. The central office is located in another city and I connect to the central office with a Cisco router using a leased line E1 cable(using ...
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2answers
77 views

Cisco router or Sonicwall hindering our phone systems to acquire DHCP [closed]

We have been battling with our IT Company, who installed the Sonicwall, and our phone carrier, who installed the Cisco router, for 14 days. One of the two is blocking our phones from receiving DHCP. ...
2
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1answer
359 views

Cisco ASA 5510 Out-of-Order Packets to Google

We're seeing a large number of packets being dropped due to being Out-of-Order. The numbers are large enough that it may be having an impact on network performance. We've isolated it down to a few ...
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1answer
35 views

Select-object in CISCO IOS

I am very new to CISCO IOS and have little to none experience. I was wondering if there is a way to run a command like show ip interface brief and then select exactly what you want and then redirect ...
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1answer
134 views

Configuring Cisco 3800 ISR Router with two default gateways for different subnets

I am trying to configure two physical interfaces on a Cisco router to act as two separate gateways for two different subnets: gigabitEthernet0/0 > gw 10.10.10.10 255.255.0.0 for network 10.10.0.0 ...
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1answer
243 views

CISCO WS-C4948-10GE SFP+?

I have a pair of CISCO WS-C4948-10GE's that we need to connect to a new switch that has SFP+ and QSFP ports. Is there an X2 module that supports this? If so, can someone name the part number that will ...
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1answer
729 views

Cisco Catalyst 3750 connected to Cisco ASA 5505 and dropping packets

(Cross posted from Super User per suggestion there) At the office, I have inherited a network that I am still trying to fully comprehend. I have a problem today with a new connection between: A ...
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2answers
544 views

VLAN Tagging Traffic on Cisco Switch

I have a situation where I'm setting up multiple VLANS on a pfSense firewall on the same physical interface for a client. So in pfSense, I now have VLAN 100 (employees) and VLAN 200 (students - ...
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167 views

Cisco WAP321 Access Point Locking Up Daily

We have a Cisco WAP321 Small Business Access Point (WAP321-A-K9 V01 Non Clustered) that has about 15-20 users (Phones and Tablets). The device has been randomly locking up every day to the point ...
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0answers
81 views

Cisco ASA privilege level for object-groups

I'm trying to set-up privilege level 2, so that it has access to read and modify object and object-groups. Showing them seems to be no problem. I can also enter configure mode. I just can't get the ...