Make ports on two different switches look like physically wired

I have two different switches in two different buildings and I need to make the ports look like there is a physical wire between them.
I have two disjoint networks that can talk to each other through a firewall but I need to be able to easily pass multicast traffic. I have a single PC in one building on my network (network A) and it needs to look like it is wired into the other network (network B) that resides in another building. My biggest problem is that the subnets on Network B (10.129.x.x/24) overlap with the management vlan (10.x.x.x/8) on my network. I have attempted to put all of the ports on Network A and Network B on the same vlan, however I could get no traffic to pass and I believe this is a problem with the overlap. Any help would be appreciated.
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So is there a current connection between switch 1 and switch 2 and what vlan is it in or is it a trunk link.
If you want the PC to be in vlan 4 then -
1) the connection between switch 1 and switch 2 needs to be in vlan 4 at both ends or if it is a trunk link then it needs to allow vlan 4
2) the connection between switch 1 and the 6500 for both ends needs to be in vlan 4
then it should work because the PC has a direct path in vlan 4 to the 6500. The fact that there is an overlap in IP addressing doesn't matter because the PC is not routing off switch 2 but off the 6500.
Not sure how this relates to multicast traffic though. Do you mean there are multicast sources in vlan B and you need the PC to be able to receive them.
Jon

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Port aggregation on different switches?

Hello all :)
I got a server PC with two fast ethernet NICs (NICS do support port aggregation)
I know you can connect two 100 Mbps ports of server to two fast ethernet ports of a switch, this way you get one 200 Mbps link. If one of the ports or one of the links fail, other link keeps working.
this is a vey nice redundancy.
My question is;
is it possible to bundle two fast ethernet ports of server to two different switches? (first ethernet port of PC to switch 1 and second ethernet port of PC to switch 2. switch 1 and switch 2 are connected each other with an uplink)
if possible, what is the CLI command for that?
thank you very much for helping.

Hello,
AFAIK, and unless something has changed very recently, the only way to link two (or more) switches together in a single Etherchannel is in a stack configuration.
Nortel appears to have a feature called Split MultiLink Trunking, which does multichassis trunking, you might want to have a look at the document below:
Layer 2 Trunking Availability Strategies using SMLT and DMLT
http://www.informit.com/articles/article.asp?p=169544&seqNum=3&rl=1
Regards,
GP

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Hello,
Is it possible for redundancy reasons to connect a CSS to two different switches (like we do for access switches) ?
I know that one option is to configure both interfaces in the same vlan and use the spanning-tree for the redundancy. However, this will not be transparent for the end-user due to the slow convergence of the spanning-tree (uplinkfast or rapid-pvst is probably not supported).
Are there any other options ? One interface active, the other backup ?
Thanks in advance for your reply.
Gaetan

Gaetan,
for the CSS we suggest to be connected to only 1 switch and if the CSS detect a failure with the switch, force failover to the redundant css.
If you have ASR configured, failover will be stateful.
Gilles.

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I have a Cisco SG300-52P Small Business switch and hopefully I can explain well what's going on. We have a Juniper EX4200 L3 switch that has a bunch of our corporate VLANs (they are routed VLANs) and that allows communication between all of our corporate networks. We have several other L2 Netgear, HP Procurve, etc... on which we have split the ports down the middle and divided them into two broadcast domains by setting them as untagged VLANs. One cable goes from each of the different VLANs on the L2 switches into different VLANs on the L3 switch. As long as STP is disabled this seems to work fine. However, we tried this same scenario on this Cisco Small Business switch and only one of the two untagged VLANs on the Cisco will pass traffic at a time. I believe that whenever the VLAN that is on the default (VLAN 1) is plugged in, the other (the one we created) shuts down but when VLAN 1 is unplugged, the other VLAN immediately starts to work. What seems weird is that the Cisco seems to learn the Juniper's MAC on the VLAN that doesn't work and the Juniper learns the MAC on the one that does work. In other words, the Juniper does not learn the Cisco's MAC on both of the VLANs that the Cisco is plugged into, as it does with the other L2 switches that we have, and the Cisco does not learn the MACs of the Juniper on both of its VLANs. I hope this is making sense and please let me know if there is any way I can further clarify. I'm sure I'm just doing something dumb that I'm overlooking so feel free to slap me in the face. :-)
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It sounds like there is a layer 2 loop in your network if spanning tree is shutting down the ports. You should be able to do a show spanning-tree on the switch, or look in spanning tree rstp interface status.
are there any other interconnects between devices? Like un-managed hubs, WAPs with bridging, virtual servers with multiple NIC cards?
Show spanning tree on each device might show what is going on, or at least tell you which ports are root ports, which ones are forwarding or blocking. Best practice is to configure your spanning tree if you have more than 1 or 2 switches.
A detail topology showing port numbers, (sanitized) IP addresses, vlans and purpose, trunks with what vlans are tagged, and untagged .
from your description, your network looks like
multiple vlans - layer 3 Juniper swtich - netgearS1 vlan`1 --procurveS2 vlan 1 -- ciscoS3 vlan1
\-- netgearS1 vlan2 - - procurveS2 vlan -- ciscoS3 vlan 2
I'm having trouble visiualizing <<One cable goes from each of the different VLANs on the L2 switches into different VLANs on the L3 switch. >>
are the cables for vlan 1 going to vlan 1 or are the cables for vlan1 going to a different vlan on the other switch?
Can you reduce the complexity and number of interconnects by using trunking?
What are the IPs and default gateway of all devices, L3 switch?
These switches do STP, RSTP and multiple spanning tree, but will not do per vlan spanning tree. so there may be some configuration required on all switches to get the correct root bridge (the Juniper I assume)

Best way to make a logo that doesn't look like crap on big screens/phones?

I am working on creating a simple text logo that fits in a 110x300 pixel space for a website. The thing is, at this small resolution, it looks pretty crappy using Photoshop. So, I tried Illustrator because I believe you can save vectors with it (I'm new to all this). From what I know, vectors don't lose quality when zoomed in (or on big screens). However, I have no clue what I'm doing. I tried to "save for web" a logo as a png 24, and it still looks like crap. Am I doing something wrong, or is it just not possible to save a high quality image at that size?

So, there is no way to save a vector image for a website?
SVG. Flash. HTML5 canvas objects (JavaScript).
That was what SVG was really made for, but it never found widespread use.
That's a pretty broad-based (and misleading) dismissal.
Use of SVG is increasing, not declining, and practically all current browsers now support it. So with such a statement, you would need to quantify "widespread". Of course SVG (like Flash and canvas) is and probably always will be less common than raster formats, but that's always been true of vector-based graphics in general, even in print. Less "widespread" use of something superior is an advantage to those who employ it. Sites which employ it effectively can be more engaging and dynamic than the far more "widespread" ones which don't. That's the whole point.
Fonts are also vector-based graphics and are certainly pretty "widespread" in use on the web. (Consider the potential of this in the light of things like font embedding and GoogleFonts.)
From what I know, vectors don't lose quality when zoomed in (or on big screens).
Stallone, your question is really more a matter of the platforms / browsers you are targeting. You have to be aware of what kind of zooming you are talking about and what is happening on what you're referring to as "big screens."
For example, you can easily launch Inkscape, create an SVG graphic consisting entirely of vector paths, and include it in a static web page. It will be displayed and rasterized on-the-fly by the local machine, as vector graphics are intended to do. But now, who or what is going to "zoom" it? Are you talking about mere screen "magnification" by the sight impaired in which the whole page is zoomed? Are you talking about pinch zooming on mobile devices in which the whole page is zoomed? Are you talking about projecting on the conference room screen in which nothing is actually zoomed (re-rasterized) at all?
Everything that anybody views on a computer monitor is a raster image, because the monitor itself is a raster imaging device. That's even true of vector paths you draw and view in programs like Illustrator. Vector-based graphics get re-rasterized on the fly--so long as the system in which they are being printed/viewed is capable of supporting that. The question boils down to when the rasterization occurs and what is doing the zooming.
Historically, web browsers don't do that. The "intelligence" (programming) involved in rasterizing vector paths on the fly has to be effectively "embedded" in the graphic or in an add-on program (browser plug in) which performs the re-rasterization locally on the viewer's machine. That's why Flash requires a plug-in and SVG has to be viewed in a browser that understands the XML upon which it's based (which most current browsers nowadays do) and HTML5 Canvas has to viewed in browsers which can run its JavaScript-like programming (which is still developing).
All this is constantly changing as mobile devices and platforms and ebooks proliferate, and all this is why designing for the web always entails some amount of experimentation on the platform(s) for which you are developing.
It's a big subject; not something you can get a crash course on in a forum like this.
JET

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Speed/Duplex between two different switchs & SFP

Hi everybody,
I'm sorry about my poor english... I'm French (but it is not contagious)
I need your help (or TAC Help ) about speed and duplex problems.
My network :
[C2960G-24TC-L with sfp GLC-FE-100LX on Gig 0/23] <--> (Singlemode Fiber 9/125µ) <--> [Cisco SF200-24 with sfp MFELX1 on Gi1]
Autonegociation everywhere...
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%CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on GigabitEthernet0/23 (not full duplex), with f02929f97095 gi1 (full duplex).
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Is there an incompatibility between this equipements ?
Configuration detail :
WS-C2960G-24TC-L   12.2(58)SE2           C2960-LANBASEK9-M
Cisco SF200-24 Firmware Version (Active Image): 1.2.9.44
#sh int gig 0/23 capabilities
GigabitEthernet0/23
Model:                 WS-C2960G-24TC-L
Type:                  100BaseLX-FE SFP
Speed:                 100
Duplex:                half,full
Trunk encap. type:     802.1Q
Trunk mode:            on,off,desirable,nonegotiate
Channel:               yes
Broadcast suppression: percentage(0-100)
Flowcontrol:           rx-(off,on,desired),tx-(none)
Fast Start:            yes
QoS scheduling:        rx-(not configurable on per port basis),
                         tx-(4q3t) (3t: Two configurable values and one fixed.)
CoS rewrite:           yes
ToS rewrite:           yes
UDLD:                  yes
Inline power:          no
SPAN:                  source/destination
PortSecure:            yes
Dot1x:                 yes
Multiple Media Types: rj45, sfp, auto-select
#show int gigabitEthernet 0/23 transceiver properties
Diagnostic Monitoring is not implemented.
Name : Gi0/23
Administrative Speed: auto
Administrative Duplex: auto
Administrative Auto-MDIX: on
Administrative Power Inline: N/A
Operational Speed: 100
Operational Duplex: half
Operational Auto-MDIX: on
Media Type: 100BaseLX-FE SFP
Configured Media: auto-select
Active Media: sfp
Thank you so much for yor help !

Thank you Leo,
It doesn't work, but I found an solution !
A strange solution...
I forced the C2960G-24TC-L to work with SFP :
media-type sfp
When I do that, I have the possibility to force the duplex (but not the speed... ok why not... ) :
duplex full
It is not very clean but my link is up and full-100 both sides.
Not very clean because :
C2960 side = force duplex, auto speed
SF200 side = auto duplex, auto speed
No errors... the link is clean.
Anyone known the reason or a better solution ?

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Hi Ravi,
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Thanks.
Best Regards,
Shweta

Make ports on two different switches look like physically wired

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