T410 - 2537AL8 LAN vs WAN

What is the difference in usage between LAN and WAN? When do I need the WAN Card?
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There's a Wireless LAN card (aka WLAN) which is your standard 802.11 Wi-Fi card.
There's also an option for a Wireless WAN card (aka WWAN) which uses cell-tower 3G internet.
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Question regarding LAN to WAN setup.....

Hi everyone,
I'm pretty new at routing and don't have much experience in it other than what I've learned in CCNA. I'm going for my CCNP now and am starting to study for ROUTE. As such, I need to lab, lab, lab.
Please bear with me as I'm pretty much new at a lot of this stuff.
I have a 2600 and currently, it only has one Ethernet port. I'd like to get a WAN card/WIC for it but I'm not exactly sure which one I should get (or if one even exists.)
I do have an extra T1 CSU/DSU card but I don't think I can use that to connect to anything but a T1 line, which I don't have. (Note this is going to connect to one of my home Linksys Smart router's ports so as to have a LAN to WAN setup. The Linksys provides Internet access throughout the house.)
I did try to connect the T1 card to one of the Linksys's LAN ports but I'm not getting any activity at all. (This leads me to believe this card is SOLELY to connect to a T1.)
Basically, I'd like to have the Linksys on one network and the Cisco on a completely different network and have the two networks communicate with each other after configuring the appropriate routing protocol. I've already tried this using ROAS utilizing VLANs and it worked perfectly but I now want to try it with completely different networks. For example, my Linksys will be on 192.168.x.x and the Cisco will be on say, 10.1.x.x.
Does Cisco offer a WAN card for my 2600 that isn't T1 and that will work with one of the Linksys's ports to accomplish this?
I think I've read there is the NM-1E module that would give me an extra port. But is that used as a LAN port or a WAN port? Can an extra LAN card act as a WAN card if I simply configure it for the different network?
Thanks!

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T1 CSU/DSU is a different physical technology from Ethernet. It's often possible to connect two such interfaces, back-to-back, if two routers have these modules; doubtful your Linksys does.
It's been a long time since I've worked with a 2600, but some models might have various options to add another Ethernet port and/or replace the T1 CSU/DSU module with one. Cisco's main web site should have that information.
BTW, old hardware should be able configure basic routing, but if you're going for a CCNP, you might be unable to try out some newer IOS features you'll be expected to know and understand.

LAN or WAN port ?

I have a AEBS that I connect (and disconnect frequently) to an existing LAN (ethernet based).
I'm testing my memory because I haven't used the AEBS in several months.
I believe I always connect my router to the AEBS using its LAN port. FWIW, the router in turn is connected to the DSL modem as well as another computer and printer. I have the AEBS set to not Distribute IP addresses.
The user manual and the Designing Airport Networks have me confused if using the AEBS' LAN port is the correct connection.
Should I use LAN or WAN port in this network design?
Thank you.

You will want to connect your Internet router to the WAN port of the AEBS.

Lan and Wan port on Airport express

Hi guys I am wondering if you could help me out with my airport express.
I recently bought an airport express and have it set up as the following:
Router--->ethernet cable in to the Wan of Airport express--->ethernet from Airport Express Lan to computer
This is so that I have hardwired internet to my gaming computer and wifi in my room for all my devices. The problem is, however, next year I will not be in a situation that allows me the same setup. I will be too far away to run an ethernet cable from the router to the airport express. So I have decided I shall use it to join the network wirelessly and relay internet through both the Wan and Lan port (think this is called bridge mode?). I was also intending on connecting an ethernet hub to one of the ports so that I can connect multiple devices, smart tv, macbook, ps3 etc. But having one of the ports exclusively to my gaming pc.
My question is, with both Lan and Wan ports relaying internet to multiple devices, would I see a drop in performance, in particular in regard to my compter? Or is the airport express able to join both the 2.4GHz or 5GHz and relay each connection to a specific lan port?
Unfortunately I am not in a position to test this yet, lacking a 5GHz connection in my halls, so I would appreciate if anyone could help shed some light.
Thank you

is the main router also an apple product? if so, then yes you can extend wirelessly, but if the main router is an apple product, why are you bothering to extend wirelessly at all when the main router's signals should be strong enough?
if the main router is NOT an apple router, then you wil NOT be able to extend it wirelessly period.
in my experience, there are very FEW places you NEED to extend a network wirelessly, and i always recommend against it since there is a big performance decrease.
In the case of a wirelessly extended network, throughput may be reduced to less than 60 percent of that of a single device.
http://support.apple.com/kb/HT4145

Which Monitoring Tool is best to monitor LAN and WAN

Hi,
CAN ANYONE TELL ME Which Monitoring Tool is best to monitor LAN and WAN.
Waiting for immediate response.
Thanks
Irshad

To start with HP open, this is SNMP-based as well. As it is around for quite a while and delivers support for many vendors, it has become sort of an industry standard. Many other vendors deliver add-ons (even CiscoWorks) to support their products via HP open. That functionality however comes with a price. If you have plenty of money an a large network to manage, HP open might be your best choice.
Cisco Works and other -start-with-C- products are typically used to manage Cisco devices. If you have a fair share of non-cisco boxes around you will find that you cannot see or do everything with them that you might want.
One special thing about CiscoWorks is that it lacks a grapical real-time overview of the network. In my opinion this is a weakness in the product. On the other hand, it has many nice features to manage all kinds of Cisco devices.
My ideal solution is to use both a generic SNMP manager, SNMPc in my case, and CiscoWorks 2000. With SNMPc I can quickly see network node status and do some bandwidth management (baselining). CW2k serves mainly to execute changes (NetConfig) and as a syslogger. It is also used to perform IOS upgrades and to store config files.
I guess this could be done with HP open as well, but our money does not reach far enough to pay for both. SNMPc costs a lot less, both in purchase and in maintenance.
Hope this clarifies things a bit.
Regards,
Leo

Public LAN and WAN Addresses

Hi Guys
I am slightly confused about public lan and wan ips. We have a circuit that was installed a few months ago as a backup failover but we now want to start using it so I phoned my ISP for the public range for that circuit.
Now our internal IP subnet is a 192.168.150.xx
I was expecting the ISP to provide me with one public range maybe a /30 so I can assign an public ip to my routers external interface and PAT to that address.
The ISP instead gave me a public LAN and WAN address range both of which are public IPs. Can anyone explain what these are where in my type of network will they fit it
Thanks

As Peter says it is worth talking to your ISP but LAN addresses are usually simply another public IP block you are free to use however you want.
You don't have to use them and you certainly don't need to allocate them to physical devices on your LAN. The ISP doesn't really care how you use them either, they will simpy route traffic to those address to your edge device (see below for more details).
They can be useful if you host a lot of servers/applications accessible from the internet for example.
It does depend on the devices you have ie.
LAN -> firewall -> ISP router
in the above you use the WAN addressing for the link between the firewall and the ISP router and then you can just use the LAN address range for NAT on your firewall. Non of the LAN IPs need to be actually assigned to any interface
LAN -> firewall -> router -> ISP router
here you have your own router on the outside of the firewall. The WAN addressing would be used between your router and the ISP router. The LAN addressing would be used for the firewall to your router connection and any spare IPs can be used for NAT (usually done on the firewall).
Note that usually the LAN addressing is a larger subnet than the WAN addressing and as you say the WAN addressing is usually a /30. So the ISP uses one of the IPs from the WAN range and you use the other.
If you have been allocated LAN addresses then the ISP will route traffic to these addresses to the WAN IP you have used so make sure you use the WAN IP on either -
a) in the first example above the outside interface of your firewall
or
b) in the second example above the outside interface of your router, the one connecting to the ISP router.
Hope that makes sense.
Jon

Data package size-LAN and WAN

HI Experts,
Could anybody give explanation/Document for the below query?
When transfering R/3 to BW.How the data pacakage size is determined.?Would the size of data packets be different over LAN and WAN? Why?
Thanks
Pradeep

In transaction SBIW -> General Settings -> Maintain Control Parameters for Data Transfer (in the OLTP System), you can see and edit the default values for the source system.
If you display the infopackage in the BW system and click on the menu option Scheduler -> DataS. Default Data Transfer, you will be able to edit the settings for the infopackage and also see what's the default configuration for the source system.
You may also consult the following SAP Notes for more information (including exceptions):
[417307 - Extractor package size: Collective note for applications.|https://websmp107.sap-ag.de/sap/support/notes/417307]
[409641 - Examples of packet size dependency on ROIDOCPRMS.|https://websmp107.sap-ag.de/sap/support/notes/409641]
I don't see what difference it could have over LAN or WAN, though...

Load balance on routers LAN and WAN

Hi ;
I have a setup where i need to implement load balance on 2 routers in both sides ,LAN and WAN , and there is ASA in the LAN side , my question is that when do load blance in LAN side using GLBP how the 2 ASA's will act on this because they will have only 1 default gateway IP address .
Thanks

Not Harbi
Not entirely sure i understand the question but i'll try to answer based on a few assumptions.
It sounds like you have a pair of ASA devices on the LAN side. Assuming they are in active / failover then they will appear as one IP address to the routers - a VRRP address. When the ASA arps out for the default gateway address they will get one of the virtual mac addresses back from the AVG.
They will send traffic to that mac address ie. they won't load balance.
The load balancing aspect comes in when another host on the LAN then arps out for the default gateway and the AVG assigns it a different virtual mac address tied to a different router. But as the ASA pair always appear as one host entity they will always be tied to one of the routers at any one time.
Hope this covers what you were asking
Jon

Why would i connect a external hardrive to the airport extreme and what is the difference between LAN and WAN gigabit ethernet?

Hey just wanted to know what is the reason i would connect my external hardrive to the extreme and what is the difference between LAN and WAN ehternet. I know one is local and other is wide but can someone explain in simpler terms.

Connecting a hard drive to the Airport Extreme makes it available to be shared across all the computers on your network.
WAN (Wide Area Network) is your connection to the internet
LAN (Local Area Network) is your internal (or local) ethernet connections (computers, printers, etc...)
AirPort Base Station: About the WAN and LAN Ports

[solved] Troubleshoot ssh with keys (works from LAN, not WAN)

I'm trying to set up ssh so that I can connect to my work computer from home. It is pretty much essential that I keep the work box as secure as possible at all times. (So I can't disable the firewall, come home and test it because IT would not be at all happy.)
I'm not sure if this is an Arch question, a Fedora question or a general Linux/networking question.
The work box is running Fedora 17. It has a firewall eerily like the "simple stateful firewall" described on Arch's wiki. It is running sshd. Public key authentication is enabled. No other form of authentication is enabled. It has a rule allowing ssh connections.
My laptop is running Arch. It has a firewall very like that described on the "simple stateful firewall" page. It has a couple of rules allowing stuff I need at home (printer and something I had to enable for the LAN).
Initially, I was given an internal ip address. I got this working fine i.e. I could ssh into the box from my laptop while sitting next to it in my office over the LAN. I'm using the default form of key pair generated on Arch (i.e. rsa) and am using gpg-agent with ssh support in lieu of ssh-agent to manage keys. Pin entry is using the qt front end as I'm on KDE. (I adapted KDE's config so that it starts gpg-agent with ssh support for the session so that I didn't end up with two instances.)
Once the firewall was in place and sshd was running, they gave me a public ip address. At this point, no port was opened in their firewall to allow WAN connections but I tested the public ip address from within the LAN and it once again worked fine.
Once I'd confirmed the machine could connect out after getting a public ip, they arranged for the port to be opened for ssh. However, I cannot connect to the machine from home.
$ ssh -vvi .ssh/id_rsa [email protected]
OpenSSH_6.1p1, OpenSSL 1.0.1c 10 May 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 22: Applying options for xxx.xxx.xxx.x
debug1: /etc/ssh/ssh_config line 32: Applying options for *
debug1: auto-mux: Trying existing master
debug1: Control socket "/home/username/.ssh/[email protected]:nn" does not exist
debug2: ssh_connect: needpriv 0
debug1: Connecting to xxx.xxx.xxx.x [xxx.xxx.xxx.x] port nn.
debug1: connect to address xxx.xxx.xxx.x port nn: Connection timed out
ssh: connect to host xxx.xxx.xxx.x port nn: Connection timed out
xxx.xxx.xxx.x is the public ip (works fine from LAN)
nn is the port number
username is my user name (same on both machines)
The options for the host from ssh_config are:
AddressFamily inet
Compression yes
ControlMaster auto
ControlPath ~/.ssh/socket-%r@%h:%p
and the only generic option applied to all hosts is just a line to insist on protocol 2 which I think is default now anyway but I followed the wiki and specified it to be sure.
What have I missed? My networking knowledge is pretty basic at best. (I got this far using Arch's wiki, Fedora's documentation and a little trial and error. That seemed to work well but now I've added google and still can't figure it out. All the hits I get concern cases where the LAN connection works but authentication fails over WAN. But I'm not getting that far - it looks like my work box doesn't respond at all...)
Last edited by cfr (2012-09-25 22:12:06)

So I discovered I'd also managed to kill off LAN access as well as the machine's ability to use any sort of DNS... (I did say it needed to be secure...)
Anyway, I fixed that, reestablished working ssh from LAN but still can't get it to work from WAN.
Question: if ShieldsUp! reports the port as stealthed does that mean that the port has not actually been opened? So the campus firewall is blocking the connection? Because if so, I'm knocking my head against a brick (fire)wall to no purpose whatsoever...
I figure it can't be the software firewall else I'd not be able to connect on the LAN. And it is a public ip address so there's no NAT translation required...

Can't recognize airport via lan and wan cables??

Trying to add airport extreme to present set up of G4 desktop that presently is hooked up to an external high speed modem.
Want to hard wire to desktop and use airport extreme for laptop. I'm not simple but do not know much about setting up wireless.
Here is my presnet set up.
High speed modem to airport extreme via wan cable.
Airpirt extreme to g4 mac via lan cable.
Computer won't recognize airport. can't use setup utility, can't get to internet.
Trying to locate pppoe message and then mothing.
Please...any suggestions for someone not very wireless savy
power mac g4 dual 450 Mac OS X (10.4.1)

This has been very helpful.
I used airport setup asst. for windows and now have configured a secure wireless connection for my dell (dude). I used PPPoe since my internet provider uses it. Can't wait until Feb when I will be getting my power book.
But I have the problem that the G4 dual 450 desktop will not recognize the aebs when i have connected to it via the lan port. I want to be able to configure it this way so I don't have to put a card in it. Wired to desktop, wireless to laptop.
Also, it looks like the desktop is only compatible with airport and not airport express. Not sure where could find a card.
You have been very helpful through this so thank you very much.
Do you have any last advice?
Gord
power mac g4 dual 450 Mac OS X (10.4.1)

UCCX 8.0 switching network deployment from LAN to WAN

I have a UCCX 8.0.2 HA setup that was installed in a LAN enviroment. I now need to change that to a WAN setup. A good documnet would be great. Thanks.

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For information about HA Deployment over WAN, see these sections of the 8.0.1 Installation Guide PDF:
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/installation/guide/uccx801ig.pdf:
"Important Considerations" on page 10
"Performing Initial Setup for the Second Node" on page 72http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/installation/guide/uccx801ig.pdf
This related information might also be useful:
WAN/LAN Restrictions
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/configuration/guide/uccx801ag.pdf
Expected Behaviour During a Failover
http://www.cisco.com/en/US/docs/voice_ip_comm/cust_contact/contact_center/crs/express_8_0/reference/guide/uccx80_eb_failover.pdf
Please let us know if these docs provide the information you need.
Linda

LAN and WAN share the same MAC address -- could this be a security issue?

When I bought the AEBS(n), I was a bit surprised to see only one ethernet MAC address listed (on bottom of unit, or was it in config utility?), in addition to wireless MAC. My main router has two ethernet MACs.
So last nite, I investigated. I confirmed my suspicion that both the WAN port and the LAN ports share the same MAC address! My setup has the AEBS WAN port plugged into my home LAN's main router, and a Linux machine plugged into a LAN port of the AEBS.
View of AEBS WAN side (from main router at 192.168.1.1)
ii# arp
Seconds IP Address MAC Address
734 66.130.224.1 001120A87AF5 -- ISP router
789 192.168.1.21 0016CBC430A6 -- AEBS WAN port
28 192.168.1.33 0010DC47DC53 -- home PC
824 192.168.1.73 00065BB2F295 -- work PC
View of AEBS LAN side (from a Linux box at 10.0.1.41)
root@LKG7CAE25 # cat /proc/net/arp
IP address HW type Flags HW address Mask Device
10.0.1.1 0x1 0x2 00:16:CB:C4:30:A6 * eth0
10.0.1.1 on the LAN side of AEBS and 192.168.1.21 on the WAN side of the AEBS both use the same MAC address, 00:16:CB:C4:30:A6.
I tried to provoke some leakage between the two sides (for example with broadcast packets), but haven't been able to do it so yet. Perhaps the switch in front of the eth MAC has enough smarts to keep the two subnets separate? Still it sort of worries me, if I used the AEBS as my only router, that both WAN and LAN go thru the same ethernet MAC (same h/w). I browsed here but found no discussion on this.
Comments anyone?

.... This is why there are separate MAC addresses
for ethernet and wireless, they are physically
different networks. In the case of the WAN/LAN, both
are ethernet-type networks but are physically
distinct (this is the purpose of a router like the
AEBS), so having the same MAC address on both sides
won't cause any sort of collision nor should it be
possible to leak across networks. MAC addresses can't
be used for routing beyond the physical network.
If it is indeed two different NICs sharing a single MAC, then indeed it is not an issue as you would never want to connect these two NICs together. But is it really two NICs?
My worry is that these two subnets are on the same physical network, with some magic going on to keep them separate anyway. Do we have some picture of AEBS internals? Maybe that would answer the question...

LAN versus WAN connection on roaming networks

Hello,
I have a HomePlug AV network in my house and I want to connect 3 AEBS in roaming mode.
I will use the HomePlug AV network as the backbone (DHCP and NAT services will be offered by another router) with all the AEBS in bridge mode.
Now, how do you connect the AEBS to the backbone? My understanding is to connect all the AEBS using the WAN port. Is that correct?
Cheers
Luca

Thanks for the answer.
Just a last question.
On the Designing Airport networks manual, they mention that one of the AEBS should be connected through the WAN port while the others should be daisy chained through the LAN port...
Why that? I thought that when the AEBS is in bridge mode the WAN and LAN ports are symmetrical.
Cheers
Luca

5596UP killing Vcenter "heartbeat" packets on Lan and WAN

Just moved my entire off a 6509 to the dual 5596up's running version 6.0(2)N2(5) with UCS.
Now, Vcenter5 (physical machine not vm) is having problems with its "heartbeat" to tcp/udp 902.
It isn't a routing issue, not a "arp issue", not a issue with a lower switch having " ip device tracking " enabled. Not an access-list block, not a firewall block.
Every minute we can watch Vcenter lose contact with local VM's that are on the UCS which is connected by Four 10-Gig trunks.
All other protocols and devices have no issues. Its just Vcenter on the local lan and going out across our WAN.
Had zero issues with this when I had all my core routing running on a 6509 running 12.2sx code.
Nothing changed on the Vcenter side or on our UCS. The routing was just moved to the Nexus 5596UP's.

VM monitoring are the TCP/UDP probes that Vcenter sends out to the VM servers ever 20 seconds.
This lets vcenter know that the VM servers are working correctly. Without a VM heartbeat, Vcenter thinks the Esx server is down, so you can't manage any of the VM hosts on that ESX server or migrate over VM's from one ESX server to another.

T410 - 2537AL8 LAN vs WAN

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