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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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 ...
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1answer
10 views

Rate Limit VLAN interface | Cisco Nexus

How to do QoS in cisco nexus for Rate limit. In cisco Routers , we will be creating a policy map and calling it in service_policy in VLAN Interface Ex: Policy-map Policy_2Mbps class class-default ...
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9 views

What is better, DHCP on Cisco Meraki MX64 or Windows Server 2012R2? [on hold]

I'm new to the Cisco world and I would like some advises. Currently I'm configuring a Windows Server for a small bussiness (less then 50 users). Normally the Windows server would have the AD, DNS and ...
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1answer
15 views

Cisco 887VA router ADSL configuration

I am attempting to setup a Cisco 887VA to connect out to the internet via a basic ADSL connection. I have configured it to the best of my ability but its the first one I've ever done and I think I may ...
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1answer
27 views

DHCP on Meraki MX64 or Windows Server 2012R2?

I'm new to the Cisco world and I would like some advises. Currently I'm configuring a Windows Server for a small bussiness (less then 50 users). Normally the Windows server would have the AD, DNS and ...
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1answer
25 views

How to run a separate internet connection between two switches over fiber

At my office we currently have a data center where our corporate connection runs from a core switch over a fiber connection to a closet with a few switches in it on the other side of the building. I ...
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24 views

How to allow authenticated User to relay on a Cisco ESA C170 (iron port)

I'am trying to configure my ESA C170 and all works as expected. But now I want to add support for relay function for authed external user. I add a SMTP Auth Profile against LDAP that works. Next Step ...
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1answer
15 views

Cisco 1921, SMTP, and NAT on multiple Exchange Servers

In a LAN environment, I have 3 exchange servers that have been deployed for high availability and failover in case one of the 3 servers becomes unavailable. Currently, my NAT settings only send ...
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22 views

CISCO router VPN configuration

I have a site to site VPN connection configured between 2 offices. The remote site connects to the internet via the Head office. However, this has been configured to connect through a proxy server. ...
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11 views

GNS3 - Connecting Emulalated IOS to TWO PHYSICAL networks

I have a CISCO c3725 router on GNS3 connected to two different and separate unique LANs via the CLOUD/HOST icon, attaching each of the virtual CISCO c3725 to my computer's physical NIC (NIC 1 and ...
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13 views

Checking RadHuntGroup And Radgroupcheck to login specific NAS

I am actually setting up a FreeRADIUS Version 2.1.12, server that will manage authentication Users Cisco Switchs in company .. and i have one problem : I need to create some accounts that can be ...
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1answer
33 views

Cisco 3750G: Tagging and untagging traffic on a port

I have the following setup: [phone]-~-~-~-(port-10)[Cisco 3750](port-24=trunk)----[servers] I want the phone to talk only on vlan (say 1940), where-as Cisco switch to untag/tag its traffic, as goes ...
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1answer
17 views

How can I have one network card that allows traffic between two private networks?

This is a a question about a private network. I have two servers (Linux), srv1, srv2, each has one NIC. I have two switches (Cisco 3750), sw1, sw2 The servers are on two different subnets. srv1 is ...
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125 views

How come one of my switches is off by two minutes in spite of ntp?

I just noticed by pure chance that one of my Cisco 4500 switches has its clock going wrong: it is more than 2 minutes behind in spite of seemingly functional ntp. In my opinion, even a single second ...
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18 views

Port Forward on Cisco ASA 5512-X

i would to improve port forward from an external host to an internal network, on my ASA. The network and the host are on two different interfaces, the internal network is on the internal interface ...
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1answer
15 views

What is the exact Juniper and Cisco router per-packet balancing hash algorithm?

Due to JunOS and Cisco documentation there is ability to configure hashing algorithm choosing one of the next-hop from the several multiple equal-cost paths. There is information about fields that ...
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25 views

How to access LAN IP Addresses : Cisco VPN Client [closed]

I have successfully configured Cisco VPN Client and connected. And allow LAN Access. I don't know how to connect LAN IP Addresses. I was trying to connect with Remote desktop connection, it's asking ...
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18 views

Cisco asa 8.4 PAT with static NAT

I am trying to make sense of the changes that Cisco has made to NAT on ASA > v8.3. I have a network which is being PAT'd to the outside interface address, and want to add a static NAT from the outside ...
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1answer
48 views

Ip addressing for serial routing

I have the following packet tracer diagram: I have range of ip address : 10.0.0.0 - 10.0.255.255 I need to assign ip addresses from this range to the routers' serial interfaces as well as subnet ...
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14 views

Blocking / barring numbers on a Cisco SPA303 IP Phone

Is it possible to block numbers using the SPA303 Configuration tool accessible on the internal IP address? If not, how can we block specific numbers from coming through on our lines? Doesn't seem to ...
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1answer
37 views

Figuring out the most efficient use of an ip range

I am working with Packet Tracer atm and have 3 subnet plans : assigned(management(104users) staff(43 users) admin(35 users)). I have an ip address range of:38.191.0.0 and subnet mask of ...
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2answers
37 views

Is this the proper way to utilize route-maps for intervlan routing?

screenshot of network map The network is pretty simple. Router-on-a-stick for nat/WAN access, Layer 3 switch for intervlan routing. Router: ip nat inside source list nated-nets interface ...
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30 views

Cisco ASA PBR and multiple ISPS for multiple SIP Providers

Have a question about policy based routing on my Cisco ASA 5515 running 9.5 and think despite it being available in this software version that I might be screwed. I have an asterisk PBX behind the ...
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1answer
22 views

If you switch an interface's vlan does it stop traffic?

I'm configuring a cisco catalyst switch and I want to change the vlan for the all of the ports on the switch away from the default vlan 1. I know how to change a vlan on an interface, I want to know ...
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2answers
51 views

Router doesn't allow loopback, can I use MS DNS to internally forward my .com to the local IP of the IIS server?

My websites are all on public IP x.x.x.110 My dev computers wan IP is x.x.x.111 From within the server, I can type my sites .com address into IE and it loads fine. But if I try them on my other ...
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1answer
25 views

Debian as VPN Server for Cisco ASR

I've to set up a Debian Server who should connected by a Cisco ASR via Side2Side VPN with a preshared key. Tried Open-VPN, but found out that both sides need Open-VPN. So the Cisco ASR is the VPN ...
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1answer
19 views

DHCP snooping on distribution layer stops cliens on access from getting ip address

Here is my topology: sw1(gi0/1 trusted port)->sw2(gi0/1 trusted port)->core-sw(gi0/1)->DHCP_server at the beginning i only configured sw1: ip dhcp snooping ip dhcp snooping vlan 18 int ...
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1answer
32 views

Operating Temperature of Cisco routers

I am managing a small server room containing different pieces of networking equipment e.g. cisco3900, paloalto appliance, pc routers, various switches. The issue is that our server room has been ...
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34 views

authenticating Cisco IOS against FreeRADIUS not responding

My company's looking to move from local authentication on it's routers and switches to a central RADIUS server which I have been tasked with developing. I have the FreeRADIUS server properly ...
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30 views

Cisco 3750 intrer-VLAN routing not working

I've defined three VLANs on my 3750 switch. I've also enabled the routing on it. It is a standalone switch. But the routing is not working between the VLANs. I don't know what to do. There is the ...
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10 views

Cisco ISA 550 firewall VLAN physical ports removed

I was adding VLANs and by mistake I added all my physical ports as "Access" to the last VLAN. Now, all my other VLANs are out of network. How can I fix it?
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3answers
59 views

Linux ssh client log all commands

I'm going to setup a Linux console box for login to Cisco devices via ssh only from that Linux machine. How I can setup ssh client on Linux to log all commands applied to Cisco devices?
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20 views

How should I use Cisco ASA 5510 and Catalyst 3550 together

So I took on a project at my job moving four separate networks into one Colo center. Currently I broken everything down from the four networks into 4 VLANS on the ASA 5510. Each are assigned IPs ...
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18 views

Self signed Cisco VPN Certificate

So I just rented some servers protected with a Cisco Firewall from a data center provider. I plan on accessing these servers through VPN. The instructions from the data center provider was to ...
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Cisco ASA 5510 ASDM 6.4 (2) unable to do port translation

I have a situation, where I want to do port translation. For example I can acces my service outside ip:8081 that is forwaded to server:8080. I should have a NAT rule option to add PAT like in this ...
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1answer
72 views

ASA INSIDE to INSIDE traffic being dropped

An ASA 5505 is being used to route between two networks as it contains routes to everything. The following depicts the network topology. I have tried various combinations of access lists such as: ...
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1answer
33 views

How to do static routing via next hop address?

i know the command is ip route [remote address] [next hop address] but how do i implement it? Currently these are the only ones that are connected: CALOOCAN - MAKATI MAKATI - NAVOTAS SWITCH0-PC0-PC1 ...
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1answer
49 views

Juniper EX3200 connected to Cisco 2900 series router - incomplete ARP entry

I'm tying to connect a Call Manager Express running on a Cisco 2900 series router to a Juniper EX3200 switch. I have both configured on VLAN 4, with both ports in access mode but when I connect the ...
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52 views

IPv4 over IPv6 IPsec tunnel

I've got two Cisco 2811 routers, both with a global static IPv6 adress, and an IPsec tunnel between them (using VTIs). Is it possible to send IPv4 traffic over this tunnel? The relevant parts of the ...
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18 views

WCCP to Remote Cache Engine - Any limitations?

I am attempting to WCCP to a remote (cloud hosted) cache engine from an ASR 1900 series router that is performing NAT. According to my reading (which was mostly done on ASAs) the WCCP cache engine ...
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1answer
35 views

RIP versus OSPF

If in my network there is a RIP, EIGRP, OSPF then a request is sent and It may pass to any of the 3 protocols, which among the three has the highest priority or the protocol that is being executed?
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2answers
61 views

VLAN sending data to ports it shouldnt have to

I noticed (based on activity lights) that VLAN traffic between two switch ports are being sent to many switch ports. Here's my scenario: Port 1 is a "mode access" switchport for VLAN 100 (untagged ...
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1answer
254 views

VMware VDS ERSPAN decapsulation on Cisco Nexus 7k and mirrored to local port

We are setting up a mirror/span/rspan/erspan to get traffic (DC's live as VMs in ESX Cluster) to our Microsoft ATA server. The problem that we are running into is that a traditional RSPAN is not ...
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59 views

Clients on one VLAN are able to access all but one IP on a separate vlan

So I am having an issue where clients on one specific subnet are able to access all servers on a separate subnet except a server with a specific IP address on another. Any other client on any other ...
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1answer
23 views

Is information transmitted over Cisco routers saved anywhere on the router itself?

Everything is in the title: Is information transmitted over Cisco routers saved anywhere on the router itself?
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33 views

ACL list to deny even networks

I wonder if you can help me. I am trying to set up an ACL. I have a network - 172.16.1.160/27 and I need to deny hosts with an even number in the last octet. What wild mask would I use to do this? ...
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Configure Cisco QoS for VLAN

I have two VLANs (20 and 21) that are accessing the same resource on a switch. Clients on VLAN 20 access this resource only at schedule times, but when they do, they generate lots of traffic as ...
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2answers
36 views

Cisco 1841 Router from STATIC to DYNAMIC Configuration

Basic PC-to-Internet Ethernet Configuration I'm trying to find the proper configuration in the IOS to have Fa0/0 = DHCP and Fa0/1 = STATIC-only, to allow packets from the STATIC side (inside network) ...
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1answer
51 views

Correcting Time Problems - Cisco Switch - DHCP Options Daylight Savings Time

I inherited quite a network in terms of centralized or correct configuration. The prior administrators did not configure many basic services correctly and myself and my Senior Administrator are now ...
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2answers
53 views

Freeradius is ignoring Packets

currently i'm installing a Cisco ASR1k as an PPPoE BRAS. I'm using freeradius as authentication service. The setup is an Ubuntu 14.04LTS with a quite outdated freeradius 2.1.12 installed via APT. ...