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.

learn more… | top users | synonyms

0
votes
2answers
113 views

Random router load balance

It's my first GNS3 router configuration experience. There are 4 connected routers (they can ping each other). The routing protocol is router eirgp 10. This is result of show ip route on R4: D ...
0
votes
2answers
495 views

Cisco: Route Outbound SMTP Traffic on Same IP as Inbound

Have a few servers setup behind an ASA 5505, all is well, except for the fact that the ASA only sends the correct smtp outbound IP for the mail server domain itself. Any other domain that sends ...
0
votes
1answer
100 views

Cisco Catalyst 3560G telnet access

I currently have telnet access to switch. interface Vlan2 ip address 172.17.0.7 255.255.255.0 ! ip default-gateway 172.17.0.1 ip classless access-list 160 permit ip host 172.17.0.101 any line vty ...
0
votes
1answer
121 views

route cisco sg300 traffic through Watchguard firewall

I need help in determining what I need to research. I have two cisco SG300 switches (sg300-52 & sg300-28) and a Watchguard firewall (XTM-23). The internet connection currently passes through our ...
1
vote
0answers
278 views

SSTP VPN connects, then disconnects

I'm trying to setup an SSTP VPN on Windows Server 2012 which works fine when I connect from the same subnet as the RAS server but does not work when I configure PAT or when I try to route the traffic ...
2
votes
2answers
265 views

Unexplained 0.1% packets time out when pinging from router

I'm troubleshooting a customer who requires the ability to send 5000 pings from the router to their remote site over a satellite link with zero timeouts, yet they keep experiencing one to five packets ...
0
votes
2answers
237 views

Limiting Bandwidth per port Cisco router

Let's say a businessses purchases a sufficently fast internet connection (such as 60Mbps cable connection) and VOIP quality is pretty good for the most part. The only thing I would be worried about ...
-2
votes
1answer
106 views

VLAN routing setup with VPN on Cisco ASAs

We currently have two ASA5515-X firewalls, what we want to do is dedicate one of them to providing AnyConnect VPN and two site to site VPNs only, with the second ASA handling firewall ACLs for ...
0
votes
2answers
70 views

Name of the tool to simulate packets on Cisco

On the CONSOLE of a Cisco router there was a command to create a "simulated packet", to check if it gets routed or not. It showed the internal steps the router would follow. It was great for ...
1
vote
2answers
310 views

Slow speed with Cisco 1721

I have a few Cisco 1721s and a WIC-4ESW. I was running another companies home router as my cable router, but decided to turn that into a wireless bridge and use my extra Cisco as my router. I ...
2
votes
1answer
227 views

Is it ok to use cat5e patches/jacks on cat6a cable for 10Gb

I understand that "technically" you are supposed to use cat6 cable jacks as well as cat6 patch panels. In practice I've seen cat6a plugged into cat5e patch panels, although I've never seen cat5e ...
1
vote
1answer
726 views

Cisco dual static default routes to WAN

I am trying to setup Dual WAN in our office because our single VDSL modem couldnt handle our web traffic any longer. So we now have two VDSL modems (Sagecom FAST2864) they cant go into bridge mode ...
1
vote
1answer
96 views

Cannot ping Cisco Aironet 1130AG after rebooting Cisco 1941W

Okay I am currently setting up a Cisco 1941W and a Cisco 1130AG access point, The Access point is plugged directly into the 1941W Ge 0/1 I have configured them both so far that everything works fine ...
1
vote
0answers
377 views

How Windows establishes L2TP/IPSEC VPN connection without “IPSec ID” (group id)?

I have a third-party VPN server configured with only 4 credentials given to me: server ip, preshared key, user name and user password. Under Windows 7, i can easily connect to this VPN via standard ...
0
votes
1answer
113 views

Route maps on dual homed Cisco router

I have a Cisco 1801 on a remote site with dual WAN connections, with route maps to correctly NAT depending on which interface the traffic leaves via. I use IP SLA to adjust the default route from the ...
0
votes
0answers
46 views

2 cisco 1941's, high latency during low network load

We have a point to point connection between 2 cisco 1941, the weird thing is that during low bandwith usage we experience high latency (peaks of 200+ ms, when 8-20 is normal) we currently use a ...
-2
votes
1answer
46 views

Cisco QoS for telephony and videoconference traffic [closed]

I'm new in QoS and gathering information. I have switches 2960, 3750 and routers 2911, 7200 and I have voip and videoconference device/software in my network that I want to pass to Internet through ...
1
vote
1answer
428 views

LACP : Cisco ASA 5515 & Switch ProCurve 2920

I've two ASAs 5515 connected in failover Active/Stand by (on Gi0/5) My two ASAs are connected to two Switch ProCurve 2920 to have HA if something happens. So I plug something like that (don't pay ...
0
votes
1answer
210 views

Cisco Prime NCS not starting

I have received the Cisco Prime OVA file and which we placed onto an Oracle virtual environment. We turn the VM on and the CLI boots, When we try to start the NCS service we get errors. ...
1
vote
1answer
577 views

Cisco Port Buffer Memory

How can the total amount of port buffer memory be determined for Cisco switches? Cisco doesn't seem to publish this data anywhere as part of the hardware specifications, but the information seems ...
0
votes
1answer
133 views

Cisco ASA 5505 Random Crash

From time to time, my office ASA will become unresponsive to console/ssh and drop all incoming/outgoing packets. The ASA will essentially crash. I have no idea why it does this all of a sudden, but ...
-1
votes
1answer
172 views

Can 'show mac address-table' be used inside user mode? [closed]

I've been studying for my CCNA exams using Cisco ICND1 Official Cert Guide, Wendell Odom. On one question they ask in which modes show mac address-table can be executed. The answer is User mode and ...
1
vote
0answers
284 views

ip-helper forwarded DHCP request not reaching DHCP server

The situation--I'm trying to centralize our DHCP services to a single Windows 2008 R2 Server (we're switching to L3 switches that don't provide DHCP services). We currently have Cisco routers at ...
1
vote
1answer
156 views

Cisco ASA: Terrible network speed once or twice a day, fine otherwise

I've been trying to get to the bottom of this for a while now and, well, it seems like I can't. We have two servers behind an ASA5505 (software version 8.3) at a datacenter. They run a wide variety of ...
1
vote
0answers
54 views

Can you SNMP poll the ARP table on Cisco ACE?

I'm trying to get a MAC <=> IP mapping from a Cisco ACE. Unfortunately according to this table, while it supports IP-MIB the ipNetToMediaTable and ipNetToPhysicalTable subtrees are not supported. ...
4
votes
1answer
2k views

How to backup and restore configurations on lots of Cisco routers and switches from Linux? [closed]

I'm looking for a way to backup, save, version and restore configurations of Cisco network equipments. I need to be able to automatically GET and PUSH configuration files on lots of routers and ...
0
votes
1answer
376 views

Cisco VPN and .pcf file

I have few of profiles .pcf files , and I used them in order to automate the vpmclient connection VIA CLI command I have WIN XP server for example vpmclient connect "customor_alpha" ...
2
votes
1answer
1k views

ESXI 5.1 - Unable to trunk to cisco switch

I have configured my esxi host vSwitch1 to use the secondary NIC on my VMware host. On vSwitch1 configuration I have set the VLAN to 4095 which specifies to allow all VLANs. If my cisco switch port ...
2
votes
1answer
4k views

Cisco Anyconnect: Vpn establishment capability from a remote desktop is disabled

I need to run Cisco AnnyConnect from a VM in a data center. When I run it I get this message: Vpn establishment capability from a remote desktop is disabled Can this be turned off? I saw some ...
0
votes
1answer
80 views

Natting / Port forwarding in cisco FWSM

I have requirement to PAT two different public IP [same port] to single load balancer local IP [VIP] in different ports using a Cisco FWSM. Ex: static(LB,outside) 10.0.0.1 www 192.168.100.1 8282 ...
1
vote
0answers
175 views

Cisco vlan entry missing in vlan.dat, but appears in running-config

One of our vlan's (ID: 104) stopped working suddenly and computers on that vlan failed when trying to obtain a dhcp ip address. On the Cisco switch if we do show vlan, this command is supposed to ...
0
votes
1answer
178 views

Is it possible to configure a Cisco router to serve as a Teredo relay?

The router in question is a Cisco 871, show version as follows: Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(24)T8, RELEASE SOFTWARE (fc1) Technical Support: ...
3
votes
1answer
136 views

Unicast traffic between hosts on a switch leaving the switch by its uplink. Why?

I have a weird thing happening on our network at my office which I can't quite get my head around. In particular I can't tell if it's a problem with a switch, or a problem with configuration. We have ...
0
votes
1answer
248 views

TACACS+ ACS 5.3 Err 'ACS: Resource not found or internal server error No information'

Has anyone experienced this issue before? Running: Cisco TACACS+ ACS 5.3 When I log in I see this displayed on the right pane. I still have the navigation links on the the left pane and able to ...
1
vote
2answers
107 views

Can I configure netflow on router other than Cisco

I am quite confused about netflow protocol. First thing I want to know is can I configure netflow on other router. We have Jflow for Juniper but what about other vendors. Also, suppose if netflow ...
6
votes
3answers
150 views

Cisco Dot1x Port Authentication - VLAN selected based on what domain the user logs on to on computer?

Currently my company has been bought out by another. Due to this, another two companies users will be migrating into our office. It would be super handy if we could have the vlan chosen for the user ...
0
votes
1answer
230 views

VPN site-to-site with rv180 poor connection (4 Mbps)

I have speed problems with 2 cisco rv180 using VPN Site-to-Site. According to cisco specifications, the IPsec Throughput is 50 Mbps. I have done many tests using Iperf on both sides (NY ans SC) and ...
1
vote
0answers
131 views

Iperf multiple streams

I need to test my network between two sites using iperf. I'd like to open parallel streams sending data on different (let's say 5 defined) ports, with random length from 10-1000, with random 1-2 ...
5
votes
2answers
628 views

Cisco console, USB and RJ45?

I have a new Cisco 3750X switch and I want to connect to it via console. Only.... this switch does not have a DB9 connector on it, its Serial port is RJ45. I have a USB to RJ45 cable, and am on ...
0
votes
1answer
114 views

Proper way to connect Cisco Small Business Switches? [closed]

First time network engineer here. I don't have a large budget, so I need to learn all of the skills necessary without pulling in a bunch of vendors. I'm charged with building out a 350port network in ...
2
votes
2answers
442 views

Why does the Cisco RV180 not let me use a 255.255.254.0 subnet mask with a 192.168.2.1 LAN IP address?

I'm a Sysadmin for a tech company. We have a Cisco RV180 gateway device. We are at our breaking point for IP addresses, so we are changing from a /24 to a /23 subnet to allow for double the devices. ...
2
votes
2answers
65 views

Cisco Network Object NAT to get Internet?

So I've inherited a Cisco ASA 5505, and I have no experience whatsoever with the things! There are two Network Interfaces both WAN facing, and the LAN interface of course. Now in NAT rules, there are ...
0
votes
0answers
496 views

Cisco 1921 - Using NAT (NVI method) between VRF's slow performance

I'm setting up a Cisco 1921 with two VRF's: one to the internet and one to the LAN. The LAN is in private address space so source address translation needs to happen when the packets leave the ...
0
votes
1answer
248 views

How to allow IGMP traffic on Cisco switches?

I have a network formed by some Cisco switches (a 2960 at the center, some 2950s for distribution). The network uses VLANs, and there are trunks between the various switches. Computers in the same ...
4
votes
1answer
225 views

had a CISCO 2960S dropped in my lap - how to setup the management interface?

Few tasks in the world are more of a joy than to have a chunk of hardware dropped into ones lap with a post-it note that says "configure this for that new subnet". I know my way around Linux/UNIX but ...
2
votes
1answer
249 views

VPN Failover Cisco ASA 5505

So basically we have a Cisco ASA 5505 (we have inherited this from a customer, none of us have any experience with Cisco's). Now essentially we have to WAN lines which we have setup in Failover, via ...
1
vote
1answer
363 views

Cisco Virtual Wireless Controller and Vmware Promiscuous mode

I have read every post and guide in regards to deployment of cisco vWLC. Only part I dont understand is that they make it a huge point that promiscuous mode must be enabled on the vSwitch or in my ...
0
votes
1answer
126 views

Cisco ASA: Why do I sometimes need a username/password when entering enable mode

I'm automating some interaction with Cisco ASA devices. I need to do the following: login over ssh send 'enable', provide enable password send 'configure terminal' send some other commands, never ...
0
votes
1answer
42 views

Site-To-Site VPN Failover

Conceptually, how does this work/ would be configured in a Cisco environment, I realise this is quite an open question so please let me narrow it down. Let's say we have two sites: SiteA and SiteB, ...
0
votes
2answers
798 views

LACP Aggregation between Cisco C3750X and HP JD990A

The interface on the JD990A is very cut down. There is a serial console with minimal commands and a web interface. The 3750 is in a 2 switch stack and I am trying to configure cross-stack link ...