Search results

Sorry about that, I was giving an update on progress. in addition to asking the question if any one had any input on this topic ? the method from "P Multicast Helper-map - Converting Broadcast and Multicast" would require at least two routers between the two switches? In the Lab - I only have...

Vlan 1 was not receiving the broadcast packets - 1st issue UDP frames where not getting through to Vlan-1, in the process of receiving UDP packets the TTL=1 settings, needed to change to TTL=254 for multicast. Packets are now seen although still being dropped by the switch. 1) The L3 switch...

Vlan 1 was not receiving the broadcast packets - 1st issue UDP frames where not getting through to Vlan-1, in the process of converting broadcast-to-mulitcast packets the TTL=1 settings, needed to change to TTL=254 for multicast. Packets are now seen although still being dropped by the switch...

To answer your question: We have opened TAC agreement with Cisco on this issue now: we have a ticket open on the current TTL issue: The current status is we are experience an TTL issue on the 128 network; we have been told we need to deploy forwarding rather than routing UDP packets between...

I have the 10 getting everything as its should, the 128 network I'm having TTL issues. I can ping it fine from the 10 network. any one seen this type of TTL problem when forwarding UDP traffic between two Vlans on different subnets within the same site before ? Bill

Port #5 was bad - so i used port #6 under the same config. I have the reader Tx UDP/IP packet/frames and can receive the data on my laptop when on the same Vlan, device IP address (10.10.63.3) Vlan 63, with SVI 63 set to (10.10.63.1. - 255.255.255.0) My objective is to receive UDP data on the...

wouldn't Vlan 63 forward or route to Vlan 1 by default in its current config ?

Switch port # 5 it was indeed - tks

None taken, and we have under way: I have a shoot out for an experienced L3 switch "CCIE" consultant for this implementation in the Chicago/Indianapolis area. 2455:)

tangoseal - thanks for the reply - We just order in a switch for ourselves to work with in the lab, although we didn't get TAC. We may consider doing so in the future. Thanks for the links - good data links - I have a call-out for Cisco Certified "CCIE" consultant on this L3 switch subject...

in my config file - Vlan 1 and Vlan 63 - ip routing is configured if the reader is connected to vlan 63/port #5 or 6 and the app server is connected to Vlan 1 any other ports other than ports 5 and 6 on the same L3 3750x 24p-switch - should be able to receive the data being sent from the reader...

Back when I was testing the L3 switch connected on the network - we later found out there was an routing table and access list connected to issue of (UDP) traffic being blocked (as it was being considered broadcasting and denied) - as a security measure to block any possibility of getting DoS...

the initial testing between both (Vlan 1 and Vlan 63) are on the same switch; the reader devices on Vlan63 (10.10.63.2 and 3 - 10.10.63.1) connected to ports 5 & 6 configured will be routing UDP/IP traffic to Vlan 1(128.1.1.100 - 128.1.1.161) configured for port #10 on the same L3 switch. The...

to preempt broadcasting - "denial of service" attacks

I believe by default the 3750's deny "Fragmented and Unfragmented" (TCP and UDP) packets, you have to configure the switch to enable this type of traffic when routing between multiple switches and/or Vlan(s)- tell me if I'm wrong?- tell me if I'm wrong?

I can send a simple notepad .txt file from my laptop substituting the host (reader) device connected in port#5 SVI 63 (10.10.63.1-255.255.255.0) routing Vlan 63 (10.10.63.2-255.255.255.0) traffic to port #3 SVI1 (128.1.1.161-255.255.0.0) routing to Vlan 1 (128.1.1.100 -255.255.0.0) and receive...

"ip routing" enabled - will this enable TCP or UDP traffic on the L3 switch ?

Thanks for the info - you have been very helpful! Also - I noticed in your config file: its using "ip forward-protocol udp echo - ip route 0.0.0.0 0.0.0.0 10.1.1.1" method as well? Shouldn't this work here - in my reader device and app server use case ?

ip forward-protocol udp echo - ip route 0.0.0.0 0.0.0.0 10.1.1.1 -------------------- ! interface Vlan9 no ip address ! ip forward-protocol udp echo ip http server ip http authentication local ip http secure-server ! ip route 0.0.0.0 0.0.0.0 10.1.1.1 !

I just found this: through a google search:Cisco 3750x L3 Switch: Enabling Directed Broadcast-to-Physical Broadcast Translation with assistance from IP-helper Configuration. By default, IP directed broadcasts are dropped; they are not forwarded. Dropping IP-directed broadcasts makes routers...

handled something like this: If the devices are using multicast then you will need to turn multicast routing on the switch to allow the device and server to communicate on different Vlans. By default the switch will not route multicast packets to different Vlans. Remove the trunks since you...

TCP/IP traffic from RFID Reader - sending Web service: standard TCP/IP via (Winsock)

Question: As I understand set-up vlans on L3 switch - since Vlan1 is the default Vlan for any L3 switch and the primary Vlan for remote access for administration purposes for the switch: If that's the case and I want to route communication by and between two Vlans (i.e.Vlan1 and Vlan63)...

Through SVI I'm oppositely conducting "inter-vlan" routing. means it can route the packet from Vlan1 to Vlan63 because its a Layer 3 interface correct? SVI Vlan63 will be using inter-vlan routing for vlan1 in both switches but VLAN63 is not communicating to each other directly, is this...

very well stated! End of story!

Are there any reason(s) a network administrator wouldn't want to allow "multicast routing" between two Private Vlans (Vlan1 and Vlan10) in different subnets operating on L3 (3750) switch network - with no outside access the web - all intranet traffic? thanks in advance 2455

Are there any reason(s) a network admin wouldn't want to allow "multicast routing" between two Private Vlans operating on a "intranet" network switch ? thanks in advance 2455

Let's clarify the configuration here: interface Vlan63 - (Shouldn't the interface be the gateway for all host on Vlan63?) ip address 10.10.63.1 255.255.255.0 although the host device is configured as: IP: 10.10.63.2 Subnet; 255.255.255.240 Gateway: 10.10.63.1 ---------------- interface...

I've set up ports 7&8 rather than 5&6 and got the same response as prior configuration. this rules out its not the ports configuration 2455

This is the problem in my eyes - But what the "Network Analyst" is telling me when i presented this question and I Quote: The configuration setting you had set me; Is the gateway of this 10.x.x.x subnet (10.10.63.1) for the devices? If so wouldn't it be a problem if your vlan63 had the IP...

This is a test switch - single Switch with two Vlans on different subnets

I can ping the reader device(s) and the app server from each other connected to the L3 3750x: Switch in any port other than ports (5 & 6) on 24 port switch! using the following changes in ports 5 and 6: they were set-up as access, although when i changed then to trunk - data was streaming out...

My reader devices is plugged into port 5 and 6 - their gateway is the same as the SVI for Vlan63 - could their be some default setting that i need to change if I'm routing or forwarding TCP and UDP (fragment and unfrangment) packet back to my app server (128.1.1.100) connected to Vlan 1...

App Server connected into L3 switch on vlan 1 cat-6 cable pulled into connected port #3 Switch (L3) IP address is - 128.1.1.161 App Server (Vlan 1 connected to port #3) IP: 128.1.1.100 (just as an example) Subnet: 255.255.0.0 Gateway: 128.1.1.161 (the IP of vlan 1 on the switch) Reader Device...

this switch is the test switch. It doesn’t connect to any other switch, so no trunk port is necessary. I need to get this able to communication on a single switch connecting the reader which is on vlan 63 cat-6 cable pulled into port 5 or 6 App Server connected into L3 switch on vlan 1...

I'm looking that this from Cisco for 3750x Switch - configuration: http://www.cisco.com/en/US/docs/switches/lan/catalyst3750x_3560x/software/release/12.2_55_se/configuration/guide/swacl.html#wp1603146 This applies for a flat network all in the same subnet:

This is correct: I need to be able to get the data from the reader devices to the app server which is on Vlan 1 on a different subnet - this data is tx from vlan 63 (10.10.63.2 - 255.255.255.0) via standard UDP/IP packets. Solution works great with everything on the same subnet and gateway...

No - not yet ? No sure this was the issue or not ? I have an web service App - which can pull the stream http or TCP/IP either or on the app server - the issue is how to get the traffic from Vlan 63 on the (10.10.63.2 - 255.255.255.0) network to Vlan 1 (128.x.x.x. - 255.255.0.0) subnet ? once...