Cisco equip. and Gauss proximity

Is there any documentation on the proximity of cisco equipment in relation to the Gauss value created by an MRI magnet?

I am guessing that there is a concern that the big huge magnet from an MRI does not materially interfere with the operation of any network devices, including Cisco routers.
The best studies available on this are generally performed by the military under the TEMPEST specifications. Suffice it to say the following:
1. an MRI is a significant source of EMI.
2. STP or fiber optic is preferred over UTP for ethernet operation.
3. EMI hardening is generally not going to be cost effective for you, so the best bet is to keep the router and other network devices as far away as possible from significant sources of EMI.
HTH,
pw

Similar Messages

Default SSID for Cisco equipment

We have several wireless conference rooms equiped with Aironet 340 equipment. Most people have Cisco wireless cards for their PCs. I have a 802.11b card for my PC but not the Cisco brand. Short of asking a collegue to let me look through his setup screens to identify the SSID used, I thought I'd try the default SSID used when installing Cisco equipment. (ie. my Linksys card uses the word linksys for cards and hubs as default). Any advice?
Kevin Rose

Although there's a good chance that using a "default" SSID will allow you to associate, the best method for easy/public access to a network is:
- Set the "Broadcast SSID" option to On in the Access Point configuration,
- Set the SSID on the client to NULL (empty).
This means that almost any client card will be able to associate. However, this means there's *no* security at all for the wireless network.
If the conference rooms are for company (internal) use, it's best to have a proper security policy for wireless access - such as using WEP/LEAP, connecting to the company RADIUS server.
If you still need security, but want company visitors to have wireless access, you'll need a strong firewall policy to stop the general public from accessing the corporate network.

Cisco products and services comparisons

Wasnt sure where to post this...was hoping somebody could point me in the right direction...
anybody have any site, whitepaper, document of any kind that gives an outline of products and services comparison between cisco products and other network equipment (ie...vs Juniper, vs Brocade, vs Nortel, etc...)
thanks in advance.
Bruce

Hi Bruce,
If youre a partner you can access the partner portal which has a small bit of competitive info.
http://www.cisco.com/web/partners/sell/competitive/routing.html
http://www.cisco.com/web/partners/sell/competitive/index.html
Cheers,
Conor

Cisco 871w and LAN (What did I get myself Into!)

Hey all,
Little background info:
- Took the CCNA1-4 via college course about 3 years ago, haven't used the knowlege since
- most of my experience in the real world has been non-managed networks, but taking care of Windows Terminal Servers.
- basically I think I need to re-educate myself
Current Network:
Windows Domain
45 workstations
4 buildings
Breakdown
Head Office:
- Main Distribution point
- WAN: Cisco Router and DSL modem owned by provider
- Firewall: WatchGuard Firewall (/w 5 VPN connections)
- 1 x 48 port Managed Switch (acting as simple switch)
- Windows SBS 2003 server with Exchange, SQL, and using VPN here as well
- We have about 6 other switches that are not managed in the build
- 1 cable run through building. At the end of this building is a fiber connection to the next building
- 15 workstations
BUilding 2:
- Fiber connection from Head Office
- 1 single CAT 5e from Fiber switch to Unmanaged Switch (Switch 1)
- 1 single CAT 5e from unamanaged switch to half-way point of building where we have another unmanaged switch (Switch 2)
- 1 single CAT 5e from from Switch 1 to another small building (building 4) with a small unmanaged switch and 2 workstations
- 1 single CAT 5e from Switch 2 - to end of building, underground to building 3
- 1 Workstation attached to Switch 2
Building 3:
1 x 24 port Managed Switch with connection from Building 2 (this switch being used as a normal switch)
25 workstations in here, various distances with small workstation switches throughout.
Working with new equipment:
- we upgraded DSL (cheaper) to a 5 Static IP package, this is a seperate circuit for now - so I can configure everything and
not disrupt current services.
- using test PC and connection on this DSL to make sure most everything is working.
- Purchased 871w to replace their router and to replace our Firewall which has a faulty nic and is limited in functionality.
- 6 months from now, adding Fortigate 100A Appliance
- over next 2 years - all switches will be managed
First question: Anyone have a real good resource on how inside local, inside global, outside local, outside global works for ACL's? Isn't there something similar for NAT/PAT?
Second Question: Just looking for some best practice solutions. Should I bother with VLAN's at this time, just leave everything on VLAN since
there can be no real seperation throughout the company. Suggestions?
Outside Services required:
- Webmail - using OWA:
- host header: webmail.companyname.com
- can the router block all requests to this that are made via port 80 and allow the HTTPS ones through?
- since i have 5 statics, using NAT can I have one of the external IP's used for webmail... this can be done using static NAT and firewall rules?
- Exchange Server forwards all SMTP requests to ISP mail server.
- No RDP directly to network resources without vpn activity - taken care of implicet deny.
- Will it be possible to use my other 4 static IP's, say I create a DNS entry for ftp.companyname.com. I assume a static entry in NAT will take care of sending all requests to another network box.
VPN:
Will require VPN connections, there seems to be a ton of different ones. What is the easiest to create for a few home systems
that the VPN client can be installed and configured? Can this be managed with a push policy, can different user accounts be
created with different policies:
i.e: * Steve logs in via VPN, can RDP to a desktop to access server resources but I don't want him to be able to connect to \\serverip\share
* Bob is a user, bob currently vpn's and obtains an IP 10.0.0.249, bob shares a printer that we use to print to. I don't want bob to be able to access any other resources on our network, but users can print to Bob's remote printer.
I'm over thinking all this, and getting confused - a nice simple step approach required - I feel like I'm drowning -lol

try the following links
inter vlan
http://www.cisco.com/en/US/products/hw/switches/ps672/products_configuration_example09186a00800941b4.shtml
NAT
http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_example09186a0080881718.shtml
how NAT works
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094831.shtml
VPN
http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a0080235197.shtml
useful vpn links
http://www.cisco.com/en/US/products/sw/secursw/ps2308/prod_configuration_examples_list.html
good luck
Please, if helpful Rate

Cisco EtherChannel and XServe G5

If you've connected your XServe G5 to a Cisco switch using EtherChannel (we have two Cisco 2970s), could you please share your experiences and gotchas.
I know that Etherchannel is not LACP. I'm interested in work arounds using Cisco equipment.
I'm thinking about link aggregation for my production server.
Thanks.

The other limitations are no optical drive in the cluster node, and a 10-client license which applies to file sharing via AFP and SMB.
If you're not using it as a file server and can live with one drive bay and no optical drive, then you can save $1000. A render farm is, as Camelot mentioned, a perfect fit for the cluster node.

Mixed environment with Cisco 3750 and SRW248G4

Dear Community,
as mentioned above in the subject field, we are evaluating Linksys for Business products.
We are using Cisco products (i.e. Cisco WS-C3750G-12S-S) for core networking, due to new investment planning, we are evaluation how to upgrade our access switches.
In fact, we would like to implement Linksys by Cisco products, SRW248G4 specific. These devices should be connected over fibre cabling using Linksys by Cisco MGBSX1 optical modules.
So for these reasons, I have to check, if this design is going to work. May you give any feedback to this?
Thank you in advance.

Ni hao Seng,
Without an understanding of what you are trying to achieve I can however say the following;
I have used the wonderful SRW platform (SRW2008P) in my network for two years now. I have no difficulty in setting up VLAN tags and trunking to a traditional Cisco equipment.
Most of the problems I have seen is not understanding how to setup VLANs correctly. I can appreciate that as VLANs took me a long time to understand.
I think for the benefit of the good people out there that use this community, I should put together a Video on Demand that goes through creating a VLAN that shows how to setup VLANs on a SRW switch, taking into account the three modes the switch ports can be set in (access,general and trunking modes).
regards Dave

Where to buy a cheapest cisco equipment

I want to buy a cisco router and a cisco switch, but i don't know where to buy it. Because i only have little money, and i don't know about cisco equipments very well, so who can tell me where i can buy the cheapest and best cisco products, and they should provid free cisco support, because i never used cisco hardware before.

to find some new Cisco equipment? Oh, easy as piece of cake. You can buy Cisco network hardware via Cisco’s agents, or purchase them from some online stores. They are also reliable platform to buy Cisco products, such as amazon, eBay, Newegg, alibaba, or some professional Cisco supplier online stores like hardware.com, networkhardware.com, router-switch.com, etc. You can get detailed info of each Cisco supplier by Google. Many ways you can choose to buy Cisco hardware. Try one. Good Luck!

Visio Stencils for Cisco Equipment

Does anyone know where you can obtain some good visio stencils for cisco equipment like routers, switches, gateways, cables, ports, etc. The default ones in Visio leave much to be desired. Any input appreciated - thanks.

I too am looking for stencils. Even the Voice_IP_phone stencil is
missing all the new series phones, such as the 69xx, 89xx and 99xx models.
Anyone know where to even open a request for the new ones, or is everyone not using Visio anymore?

Connectivity issues between Cisco 2901 and Cisco SG300-52

Hello,
I am having some serious connectivity issues between the hosts in my LAN.
My LAN is based on a Cisco 2901 router and a Cisco SG300-52 port switch.
The issue that has been happening is that connections between hosts on the LAN (remote desktop, extended ping, etc) is very unstable, at some point I can see a 35% lost packets on an extended ping. This happens at any time of the day and from any host.
All hosts are on the same Vlan(default Vlan) and on the same subnet. Some hosts have fixed IP addresses (servers and network equipment) and others obtain their IP address trough a DHCP reservation established on the router (reserved with the MAC address of every host).
I can provide further details if needed, because this issue is very serious and I would really appreciate any insight or support.
Many thanks in advanced.
Sair Amer
EDIT: After doing every test we could think of, we finally found the reason behind this problem.
It turns out that the switch has problems handling communications between clients at different speeds, because most of the hosts connected were working at 100 Mbps but the servers were working at 1000 Mbps (and the communication between host and servers wasn't stable).
After manually setting the speed on all ports to 100 Mbps the problems have stopped.
Many thanks for you help on this issue.

Building configuration...
Current configuration : 4123 bytes
! Last configuration change at 12:06:16 PCTime Sat Jul 19 2014 by ccp
version 15.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
hostname Foninsa
boot-start-marker
boot-end-marker
no logging buffered
enable secret 5 $1$BDbJ$HN3VP8nmywrGB55RCxPd30
aaa new-model
aaa authentication login default local
aaa authorization exec default local
aaa session-id common
clock timezone PCTime -4 0
clock summer-time PCTime date Apr 6 2003 2:00 Oct 12 2003 12:00
no ip cef
ip dhcp excluded-address 192.168.1.1 192.168.1.10
ip dhcp excluded-address 192.168.1.151 192.168.1.255
ip dhcp pool FONINSA
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 8.8.4.4
ip dhcp pool Laptop-Sporta-Wifi
host 192.168.1.10 255.255.255.0
ip name-server 8.8.8.8
ip name-server 8.8.4.4
no ipv6 cef
multilink bundle-name authenticated
crypto pki trustpoint TP-self-signed-213585710
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-213585710
revocation-check none
rsakeypair TP-self-signed-213585710
crypto pki certificate chain TP-self-signed-213585710
certificate self-signed 01
30820229 30820192
quit
license udi pid CISCO2901/K9 sn
license boot module c2900 technology-package securityk9
username ccp privilege 15 password
redundancy
interface Embedded-Service-Engine0/0
no ip address
shutdown
interface GigabitEthernet0/0
ip address 190.196.21.98 255.255.255.248
ip nat outside
ip virtual-reassembly in
duplex auto
speed auto
interface GigabitEthernet0/1
ip address 192.168.1.1 255.255.255.0
ip nat inside
ip virtual-reassembly in
duplex auto
speed auto
no ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
ip nat inside source list 1 interface GigabitEthernet0/0 overload
ip nat inside source static tcp 192.168.1.3 21 190.196.21.98 21 extendable
ip nat inside source static tcp 192.168.1.3 80 190.196.21.98 80 extendable
ip nat inside source static udp 192.168.1.8 1194 190.196.21.98 1194 extendable
ip nat inside source static tcp 192.168.1.4 3389 190.196.21.98 3389 extendable
ip nat inside source static tcp 192.168.1.9 3389 190.196.21.98 10000 extendable
ip nat inside source static tcp 192.168.1.3 3389 190.196.21.98 20000 extendable
ip route 0.0.0.0 0.0.0.0 190.196.21.97
access-list 1 permit 192.168.1.0 0.0.0.255
control-plane
line con 0
password $
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 5
access-class 23 in
privilege level 15
password #
transport input telnet ssh
no scheduler allocate
end

Clear Channel Codec between Cisco GW and Patton Smartnode

Hi,
i have to establish an H.323 connection between an Cisco 3745 and an Patton
Smartnode 1200 with clear-channel codec to support ISDN-Data over VoIP.
PC with ISDN-Card---S0/PattonGW----H.323----3745/E1----PSTN
Software versions:
Cisco: SPServices 12.4(5a)
Patton SN1200: R3.20 2006-03-30 H323
The call establishment is sucessfull but i am not able pass any Data over
ISDN. Does anyone got this working?
Any help is welcome.
Regards,
Robert
Below are some Konfig sniplets:
Cisco:
controller E1 0/1/0
pri-group timeslots 1-31
interface Serial0/1/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn overlap-receiving
isdn incoming-voice voice
isdn send-alerting
isdn sending-complete
no cdp enable
dial-peer voice 10 pots
description ----- Towards PSTN -----
answer-address <removed>
destination-pattern 0T
progress_ind setup enable 3
fax rate disable
direct-inward-dial
port 0/1/0:15
dial-peer voice 473997246 voip
description ----- towards Patton GW -----
destination-pattern <removed>
progress_ind setup enable 3
modem passthrough nse codec g711alaw
session target ipv4:192.168.1.28
codec clear-channel bytes 80
ip qos dscp cs5 media
no vad
dial-peer voice 473997247 voip
description ----- Incoming Dial-Peer -----
modem passthrough nse codec g711alaw
incoming called-number <removed>
codec clear-channel bytes 80
ip qos dscp cs5 media
no vad
Patton:
profile voip VOIP
codec 1 transparent-cisco rx-length 20 tx-length 20
no high-pass-filter
no post-filter
no dtmf-relay
no dtmf-mute-encoder
context ip router
rtp-port-range 16384 32767
context cs switch
no digit-collection timeout
no address-completion timeout
interface h323 IF_H323
bind gateway GW_H323
route call dest-interface IF_S0_01
remote 192.168.254.30 1720
itc rx transparent
use profile voip VOIP
interface isdn IF_S0_01
route call dest-interface IF_H323
use profile tone-set Europe
no call-waiting
gateway h323 GW_H323
faststart
early-h245
h235-security version v2
no h235-security q931-auth-int
bind interface IF_IP_LAN router
no shutdown
use profile voip VOIP
port bri 0 1
clock auto
encapsulation q921
q921
protocol pmp
uni-side auto
encapsulation q931
q931
protocol dss1
uni-side net
encapsulation cc-isdn
bind interface IF_S0_01 switch

The SIP Media Inactivity Timer feature enables Cisco gateways to monitor and disconnect VoIP calls if no Real-Time Control Protocol (RTCP) packets are received within a configurable time period.
When RTCP reports are not received by a Cisco gateway, the SIP Media Inactivity Timer feature releases the hung session and its network resources in an orderly manner. These network resources include the gateway digital signal processor (DSP) and time-division multiplexing (TDM) channel resources that are utilized by the hung sessions. Because call signaling is sent to tear down the call, any stateful SIP proxies involved in the call are also notified to clear the state that they have associated with the hung session. The call is also cleared back through the TDM port so that any attached TDM switching equipment also clears its resources.
http://www.cisco.com/en/US/products/ps6441/prod_troubleshooting_guide09186a00801fa207.html#wp2077496

Routing issue between Cisco Nexus and Cisco 4510 R+E Chassis

We have configured Cisco Nexus 7K9 as core and Cisco 4510 R+E as access switches for Server connectivity.
We are experiencing problem in terms of ARP learning and Ping issues between Cisco Nexus and end hosts.

Hi,
So you have N7k acting as L3 with servers connected to 4510?.
Do you see the MAC associated with failing ARP in 4510?. Is it happening with all or few servers?. Just to verify if it is connectivity issue between N7k and 4510, you can configure an SVI on 4510 and assign address from same raneg (server/core range) and perform a ping.
This will help narrow down if issue is between server to 4510 or 4510 to N7k.
Thanks,
Nagendra

Communication problem between Cisco 3560 and Cisco SG300.

Dear Support,
I have a Cisco SG300 and Cisco 3560 switches.
3560 is my Core Switch and SG300 is access switch.
From 3560 VLAN information is not passed to SG300.
3560 Configuration:
interface GigabitEthernet0/23
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,2,10,11
switchport mode trunk
SG300 Configuration:
interface gigabitethernet49
spanning-tree link-type point-to-point
switchport mode general
switchport general allowed vlan add 2,10-11 tagged
macro description switch
Please suggest how this issue is resolve.
Regards,
JItesh Mahajan.

Dear Aleksandra,
Below Configuration is right or wrong for 3560 and SG300.
3560 Configuration:
interface GigabitEthernet0/23
switchport trunk encapsulation dot1q
switchport trunk allowed vlan remove VLAN 1
switchport native vlan 1
switchport trunk allowed vlan 1,2,10,11
switchport mode trunk
SG300 Configuration:
interface gigabitethernet49
spanning-tree link-type point-to-point
switchport mode general
switchport general allowed vlan add 2,10-11 tagged
macro description switch
Regards,
JItesh Mahajan.

How to configure one dsl connection and one public ip in cisco router and map to one interface for using exchange server

how to configure one dsl connection and one public ip in cisco router and map to one interface for using exchange server

Hi ,
Have you got any additional public IP Address from your service provider , If yes on router you can have static route for those additional IP Address pointing to your ASA outside interface .
Accordingly you can configure NAT
HTH
Sandy .

Cisco wireless and Apple Mac woes

Hello all,
I've been working with Cisco wireless and WLC's for a couple of years now but the recent onslaught of Apple Mac's is giving me heart burn. I've seen this at numerous sites now and need to throw it to eht community for guidance.
Basically we have had a number of instances where the Macs just fall off the wifi. Sometimes it's when they wake from sleep and other times when roaming between AP's (1131s with same SSID's). Our standard install is WPA2 and per ap local authentication. PC's work fine and never an issue.
We have completed a survey with a spectrum analyser and no RF interefence is present nor errors on the radio interface.
Questions:
- Is there a preferred Cisco config/setup for Mac's to work reliably? I've heard loads of rumors but nothing concrete and nor can I find anything specific.
- Should I be setting up WDS in case there is an authenticating issue.
- For those who are Mac gurus and happen to be reading. What Mac options we should look at?
This has all come to a head because the clients IT company who recommended the Macs (different from us doing the network infrastructure) are insisting that the problem is Cisco incompatibility and that we should rip out the Cisco kit and install airports (what tha!!!).
Thanks in advance for any pointers.
For those who like a config here it is .... Vanilla stuff really
Building configuration...
Current configuration : 2236 bytes
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
hostname AP4
no logging console
enable secret xxxxxxxxxxxxxxxxx
no aaa new-model
dot11 syslog
dot11 ssid Home
   vlan 1
   authentication open
   authentication key-management wpa
   guest-mode
   mbssid guest-mode
   wpa-psk ascii xxxxxxxxxxxx
dot11 ssid avnet
   vlan 2
   authentication open
   authentication key-management wpa
   mbssid guest-mode
   wpa-psk ascii xxxxxxxxxxxxxxxx
username abcd password 1234
bridge irb
interface Dot11Radio0
no ip address
no ip route-cache
encryption vlan 1 mode ciphers tkip
encryption vlan 2 mode ciphers tkip
ssid Home
mbssid
speed basic-1.0 basic-2.0 5.5 11.0 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
channel 2412
station-role root
interface Dot11Radio0.1
encapsulation dot1Q 1 native
no ip route-cache
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
bridge-group 1 spanning-disabled
interface Dot11Radio0.2
encapsulation dot1Q 2
no ip route-cache
bridge-group 2
bridge-group 2 subscriber-loop-control
bridge-group 2 block-unknown-source
no bridge-group 2 source-learning
no bridge-group 2 unicast-flooding
bridge-group 2 spanning-disabled
interface FastEthernet0
no ip address
no ip route-cache
duplex auto
speed auto
hold-queue 80 in
interface FastEthernet0.1
encapsulation dot1Q 1 native
no ip route-cache
bridge-group 1
no bridge-group 1 source-learning
bridge-group 1 spanning-disabled
interface FastEthernet0.2
encapsulation dot1Q 2
no ip route-cache
bridge-group 2
no bridge-group 2 source-learning
bridge-group 2 spanning-disabled
interface BVI1
ip address 192.168.10.54 255.255.255.0
no ip route-cache
ip default-gateway 192.168.10.1
no ip http server
no ip http secure-server
bridge 1 route ip
line con 0
line vty 0 4
login local
end

Yeah!! even i have come across multiple issue with MAC and Cisco.. these are the below settings which i normally do on the cisco gears and most of the times this solved the issue..
on the IOS AP disable Aironet Extentions and set the poer local and ofdm to max
no dot11 extension aironet
power local cck max
power local ofdm max
end
On the WLC, disable Aironet IE..
lemme know if this answered your question..
Regards
Surendra
====
Please dont forget to rate the posts which answered your question and mark it as answered or was helpfull

While creation of a equipment and assignment of personnel number

Hi
I have activated partner function to the Equipment catagery.
While creating equipment using T.code IE01, I am assigning personnel number to the person responsible partnerfunction.
After that personnel number getting defaulted to operator field as per config setting.
I can create equipment and assign person responsible succussfully.
But at the time of assignment of personnel number with partner function person responsible, I am getting information messege always like
" No customer master record exists for customer 10003511"
I would request you please suggest how to "delink the above message" while creation of a new equipment and assigning the personnel number.
Thanks & Regards
CHSR

Hello
Please check the personal Number is active or exists in HR Master with its validity.Use TC for checking PA20 for checking the same.
Regards,
Rakesh

Cisco equip. and Gauss proximity

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