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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3
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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 ...
0
votes
1answer
43 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 ...
0
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0answers
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 ...
0
votes
0answers
219 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 ...
1
vote
2answers
58 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 ...
4
votes
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 ...
1
vote
1answer
128 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 ...
0
votes
1answer
62 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 ...
0
votes
1answer
504 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 ...
0
votes
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 ...
0
votes
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 ...
0
votes
1answer
253 views

Configuring a RADIUS server for 802.1x over a Cisco Switch

I am trying to set up RADIUS authentication over a Cisco switch and I have gone through every tutorial they have. I am able to get the RADIUS server to authenticate when I access the CLI of the Cisco ...
2
votes
0answers
144 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 ...
0
votes
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
votes
1answer
362 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 ...
1
vote
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 ...
0
votes
1answer
136 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 ...
0
votes
0answers
169 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 ...
0
votes
2answers
547 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 - ...
1
vote
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 ...
0
votes
0answers
51 views

PIMD daemon needs long time to send PIM join message

I am using the PIMD daemon on Ubuntu Server 12.0.4 (32-bit). When it receives IGMPv2 membership report for certain group, it takes sometimes two, sometimes five seconds to send PIM join message to its ...
0
votes
1answer
375 views

Turn Linux into Router (Cisco-like) [closed]

how you doing? I have two Sophos UTM 220 Appliance for study. They have 8 Gigabit Ethernet ports and the hardware is like a common PC (Intel Motherboard, Processor and DDR2 Memory). I would like to ...
0
votes
2answers
807 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 ...
1
vote
1answer
94 views

VRF Internet Gateway Multiple External IP's 1 Internal IP to AWS

Trying to setup VRF for the first time and its not working for me even though I keep reading everything online. IP's are different to real life. I have an Internet connection which I can ping to my ...
0
votes
1answer
705 views

Voice VLAN Configuration on Cisco SG300

We currently have a single Cisco SG300 switch on our data network. We are introducing a hosted VoIP system. As such we will be installing a second Cisco SG300 (to account for growth and new phones) ...
1
vote
0answers
48 views

Cisco UC Integration for Lync does not switch back Lync status after a call

We use Cisco UC Integration for Microsoft Lync with Office 2013. The integration does not seem to be as good as with Office 2010 (we have a separate icon for the running program, not the expected ...
1
vote
1answer
107 views

Switch to switch encryption over a wireless bridge (TrustSec?)

I am planning to connect an existing Cisco 3750 switch to a 3560C switch over a wireless PTP bridge. The bridge will be WPA2 protected, but I am looking for an additional measure of security between ...
1
vote
1answer
139 views

configure HTTPS server on a cisco router

For the past week I was trying to configure an HTTPS server on a cisco 2900 router, I've used the following commands and assigned a username and password to privilege 15 however, when Im trying to ...
1
vote
1answer
179 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 ...
0
votes
0answers
239 views

Cisco router: expired translations not timing out

Why would a Cisco router stop removing expired translations from the NAT table? For example: #show ip nat translations tcp verbose tcp <loopback>:60576 <inside>:60576 ...
0
votes
0answers
39 views

SPAN port only shows multicast traffic on Cisco switch

I'm trying to set up a cheap network forensics solution; I have a Cisco Catalyst as my main switch connected to my router. I have mirrored the port that is running to the ASR to a different port which ...
1
vote
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 ...
3
votes
2answers
256 views

How to push configurations to multiple Cisco Switches

Assume I have around 50 Cisco IE2000 Switches connected together and I want to reconfigure some settings, the same settings for every switch. Normally I would open a command line session via Putty ...
10
votes
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 ...
2
votes
1answer
533 views

How to statically configure DNS servers on a Cisco router when the WAN interface uses DHCP?

I have a Cisco router (model 887VA, IOS 15.4) used to connect a LAN to the Internet via ADSL. The WAN interface uses DHCP: interface ATM0.1 point-to-point ip address dhcp I need the router to use ...
0
votes
0answers
27 views

Several hcAlarmVariable fields in hcFallingAlarm and hcRisingAlarm snmp notifications

I'm a little bit confused about several hcAlarmVariable fields in hcFallingAlarm/hcRisingAlarm snmp notifications from Cisco devices. Actually, I have to send notification when receive such kind of ...
0
votes
0answers
128 views

FreeRadius and Cisco 2600 Terminal Server [IOS 12.1(3)T]

I'm using FreeRadius 2 and Cisco 2600 Terminal server to coordinate access to cisco routers based on time‏ ranges. Basically we are an education/training environment where we have some students ...
2
votes
0answers
59 views

Does Cisco IOS XRv support logging of TCP connection (e.g. built and/or teardown)?

I have a demo of Cisco IOS XRv and I would like to setup logging for connections. E.g. for ASA "show logging" shows log messages for every TCP connection built or teardown: Jun 11 12:29:31 ...
2
votes
1answer
310 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 ...
0
votes
1answer
414 views

Cisco 887VA Port Forwarding Not Working

I have a Cisco 887VA connected to our BT Business Broadband line. We also have another modem on a seperate connection which also handles our DHCP. The Cisco is plugged into our network switch, as is ...
1
vote
0answers
59 views

Cisco VoIP telephony - Can't save Night Service Bell Configuration

When trying to save "Night Service Bell Configuration" settings under Cisco Unified Communications Manager Express the following error message pops up. Configuration change failed. Please report the ...
15
votes
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 ...
1
vote
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 ...
1
vote
0answers
109 views

How can I add ACL entry comments on a Cisco 3750?

I'm trying to find the best way to add comments into my access-lists. For the moment, the only maneer I found is the following one: switch#conf t switch(config)#ip access-list extended VLAN-TEST3 ...
0
votes
1answer
546 views

Enabling Jumbo Frame on Cisco 2960G

I'm having issue with enabling jumbo frame on my Cisco 2960G. Here is what I tried, and what I got: Switch(config)#system mtu jumbo 9000 vb:: Read-only file system Changes to the system jumbo MTU ...
0
votes
1answer
219 views

Create two users with access to privilege level 15 on Cisco IOS

I have a Cisco router running IOS 12.4. What's the simplest way to: have two users (e.g. user1 and user2), each with his own password both of which can log in via telnet remotely both of which have ...
1
vote
1answer
148 views

3750s not logging mac address changes?

I have enabled mac address change logging on my Cisco 3750s but I'm not getting any results. What am I missing? I've moved hardware a couple times and set up a couple new VMs with totally new MAC ...
0
votes
0answers
63 views

Is there an optimal NAT configuration in Cisco IOS for peer to peer applications?

The Cisco router in my organisation is set up to use Port Address Translation (PAT) for Internet connectivity. ie All outbound internet connections are from the ip address or the border Cisco ...
0
votes
0answers
64 views

How do I make Cisco phones use <user>@<domain> instead of <user>@<ip> in SIP messages

I am using Cisco 8000 and 9000 series IP phones and registering them to Opensips. The problem is that I want to communicate with the proxy using @ instead of @ so I can have multiple domains on one ...
0
votes
1answer
120 views

Trouble with EMC vNXE and Cisco Catalyst Configuration for vSphere 5.5

Good afternoon, we have recently purchased -two Cisco Catalyst 2960-x switches -two Dell PowerEdge 320R server -1 EMC vNXE 3300-1 storage device I'm having a difficult time configuring the ...