Cisco Switching/Routing :: To Enable InterVLAN MultiCasting On 3560G

Feb 11, 2013

How do i enable InterVLAN MultiCasting. I have a WS-C3560G-24TS as my core switch and it does InterVLAN Routing. I have a Server VLAN (70) and Workstation VLAN (71). I have a server that i have set up to deploy  images to computers. Up to this point i have only done one computer at a time, so unicasting was ok. I would like to be able to Multicast to multiple computers, but am unsure what i need to do on the switch (if anything) to enable this.

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Slow Multicasting On Cisco 3560G

Feb 17, 2011

I am not a network person, but I am not sure our Network Team is qualified either. For a long time we have been using a dying Cisco 2950 100/MB switch for imaging our computers using GhostCast. Multicasting on the 2950 was never an issue other than it was flooding the switch and making all the other ports unusable. But at least the multicast portion was imaging with decent times. We had two Intel Pro NICs teamed to get 200 MB/s and a typical multicast session was about 6.5 minutes. When using only 1 NIC, it takes about 8.5. Running two concurrent unicast or multicast sessions, well that is a different story. It then triples or quadruples the time.

Now we have a 3560G setup. A single session takes a little over 3 minutes. If we multicast off of this switch, the time is about 12.5 minutes. That is 4 minutes longer than the 2950! If I run 3 concurrent unicast sessions, it takes all of them between 3.5 to 4 minutes. So obviously there is an issue with multicasting.

The switch is in a lab separate from the production network. The server with our ghost images is plugged directly into the switch and so are the computers we are imaging. From what I was told from the Network Team is that IGMP snooping is on, but multicasting is off. He said that multicasting does not need to be turned on since all traffic is going through the local switch. Probably true since our old switch didn't have multicast turned on either, but it still imaged using multicast faster.

Below are some screen shots of the imaging. The first one is the 2950 using multicast to 3 laptops. The second one is the 3560 using multicast to 3 laptops. Finally is the 3560 using 3 unicast sessions to the same 3 laptops.

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Cisco Switching/Routing :: 3750 L3 Multicasting Not Working

Dec 17, 2011

We plan to implement multicasting on our network where the sourec and destination are going to be in different vlans.I have a test 3750 switch, Layer two multicast works fine, when I place the source and destiantion in different VLan it fails. [code]

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Cisco Switching/Routing :: 3750 / Manage Multicasting On Another Router?

Feb 28, 2012

Within our small lan we have a core 3750, that handles our intervlan routing and is the core of the network. I recently looked into multicasting and set up a lab test with a 3550 with an EMI image and got the config to multicast to all vlans from one vlan, ready to go, at which point I found that our 3750 is IPBASE and doesn’t support multicasting. Currently upgrading the switch or image is not an option due to funding. My question is would it be possible and advisable to install our lab 3550 as a leg off the core, and in some way route multicasting traffic through that?I just cant get my head around the concept of having a core switch essentially routing all vlans, and then having another switch route the same vlan traffic again for multicasting to all the vlans again.

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Cisco Switching/Routing :: Multicasting Configuration On 3750x Switch

Jan 28, 2013

when enabling multicasting on layer 3 interfaces the CPU becomes fully utilized , is there any specific configuration should be enabled to reduce this .
 
Config :
 
Inetface vlan 100
ip pim sparse-dense
ip igmp version 3

[Code]......

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Cisco Switching/Routing :: IGMP Snooping Configuration For Multicasting On Catalyst 3020

Nov 24, 2011

Our switch model is "Cisco Catalyst Blade Switch 3020 for HP" We are building HA (High Availability) Databases infrastructure.Currently, there are two nodes(hosts- servers) and two above switch for HA.
 
Oracle said we need to turn off the IGMP Snooping in order to use the multicasting for their interconnect communication.So my question is:
 
Q1> Is there any way to use Multicasting without turning off IGMP Snooping on Switch side?
 
Q2> If 'yes', how can we configure the switch for Multicasting ?
 
Oracle uses 230.0.1.0 & 224.0.0.251 IPs with 42000 range port for Multicasting communication.

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Cisco Switching/Routing :: 2800 Series Router - Multicasting Windows Deployment Services

Mar 25, 2012

We have recently implemented Windows Deployment Services on our local network, but everytime we do a multicast image deployment the network get flooded to point of total saturation.
 
We have Netgear switches and a Cisco 2800 series router. IGMP Snooping has been enabled on all Switches, however, we are unsure on how to implement multicasting on the router.
 
The whole network is flat - no VLANs over than the default VLAN1. We only want multicasting to work within our local network and does not need to go out the other side of the router as that is the connection to the internet.

How to get the Cisco router configured properly to enable multicasting to not flood the network. It seems that even if we were to image 4 PCs using multicast this is enough to completely get the network flooded.
 
Also, am I right in thinking that IGMP needs to be enabled on all of the Switches?

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Cisco Switching/Routing :: 800 / Use ASA To Configure All The Vlans And Intervlan Routing And Access Lists?

Jul 4, 2012

upgrading our small office network. We currently have about 75 employees with probably 125 devices on the network. I'd like to create about 10 vlans for the different departments and then configure intervlan routing as needed. Currently we have all unmanaged switches and it's just a huge broadcast storm on the network. We are upgrading our Cisco 800 router to an ASA5505 sec. Plus license. I need some recommendations on switches. Of course, this needs to be done as cheap as possible.... Is there a way to use the ASA to configure all the vlans and intervlan routing and access lists and use a cheaper switch to provide the access layer to hosts?

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Cisco Switching/Routing :: Configuring Intervlan Routing Between 2801 And HP Switches?

Aug 5, 2012

I'm trying to configure intervlan routing between a cisco 2801 router and HP/Amer switches.  Using int fa0/1 and subinterfaces I was sure I had it configured correctly, but I cannot ping the default gateways when I place a host in a particular vlan.  Below is what I have configured.
 
HP switch - port 9 connects to fa0/1 on 2801
 ip default-gateway 10.1.100.1
trunk 9 Trk1 trunk
trunk 10 Trk2 trunk - to another switch

[code].....

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Cisco Switching/Routing :: InterVlan Routing With 3750 And 2960 Switches?

Nov 21, 2012

I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)

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Cisco Switching/Routing :: About Intervlan Routing On Catalyst 3750 Switch

Apr 16, 2012

I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net. My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20,I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to  (vlan2),my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to,go out to the internet.

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Cisco Switching/Routing :: 3560 - Access List On InterVLan Routing

Dec 11, 2012

I implemented access list on cisco 3560 switch but it never works. I want to block access from network B to Network A and allow from Ato B
Network A. 10.0.12.0/24
Network B 10.0.24.0/24
 
The configuration is
interface Vlan1
description Data VLAN

[Code].....

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Cisco Switching/Routing :: ME3400 Boot Loader - Intervlan Routing

Sep 5, 2012

On cisco and am having some issues with intervlan routing. I have followed the vids and manuals but just can seem to get this working. I have the following network lab set up.
 
Vlan 10 = 10.70.1.9/24
Vlan 20 = 192.168.0.1/24
ME2400 firmware
ROM: Bootstrap program is ME340x boot loader
BOOTLDR: ME340x Boot Loader (ME340x-HBOOT-M) Version 12.2(35r)SE3, RELEASE SOFTWARE (fc1)
[Code]...

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Cisco Switching/Routing :: InterVLAN Routing On Switch 3750X?

May 22, 2013

my company pay a switch 3750 X. WS-C3750X-24T-E. It uses IP services basically but I failed to configure InterVLAN routing. why interVLAN routing doesn't work on my switch?

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Cisco Switching/Routing :: 2600 / 3550 - InterVLan Routing

Dec 2, 2011

I've been working with these two Cisco devices in my home off and on for several months now but I just can't take it anymore, I'm about to throw them away and go back to Linksys router.
 
I have a Cisco 2600 Router with only one Ethernet card in it so I have to trunk from my 3550 Switch to that device.  I'd like to have my ISP and all users plug into switch and all trunk back to the router's sub interfaces. Currently, I have started over...again, and am unable to simply get the router and switch to ping each other if I put sub-interfaces on the router.  See my configs:
 
2600 ROUTER:
Router#sho run
Building configuration...
Current configuration : 555 bytes
[code]......

3550 SWITCH:
Switch#sho run
Building configuration...
Current configuration : 2302 bytes
!
version 12.2
[code]..........
 
Port F0/24 is in VLAN 1, as are all ports but Port F0/1 which is my desktop PC. I mocked it up in Packet Tracer and it works just fine.  This is just a simple setup and I'm making sure I can ping between switch and router before I move to each next step.

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Cisco Switching/Routing :: How To Configure ASA 5505 For Intervlan With 2960L2

Oct 18, 2011

i have 2960 l2 switch connected to the ASA 5505. for some or the other reason i am not able to do intervlan communication. have done trunk mode on both ends on the switch as well as on the ASA and native vlan 1 allowed. the trunk is up up i am able to ping only the vlan 1 ip from the switch to the ASA for the vlan 2 i am not and similar for vlan 3.
 
 config on the ASA
ASA Version 8.2(1)
!
hostname ciscoasa

[Code].....

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Cisco Switching/Routing :: 3560 - InterVLAN Communication Not Using Router

Aug 29, 2012

We are trying to figure out how to configure this properly and so far we are stuck. We have a VMWare server with two different vmnics each on a different VLAN. We have each of these vmnics connected into their own switch port on a 3560G along with the appropriate VLAN membership for said ports. We have an additional port on this same switch in trunking mode connected to our firewall to a NIC that has an IP address in the respective VLAN networks. This port is also set for dot1q encapsulation. Each VLAN also has an IP set on the switch that is in the appropriate VLAN. We are having issues in this configuration getting the one VLAN to talk to another.
 
I know if we were in all Cisco mode then we would use ROAS to do this inter-vlan communication. How to make this happen short of changing hardware?

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Cisco Switching/Routing :: 3750e InterVLan With RVS4000 Gateway

Jan 4, 2012

I have a RVS4000 connected to my cable modem which I use as my gateway, the IP address of the RVS is 192.168.3.254
 
I have a 2811 with 3 subinterfaces of which I can ping all of them from my PC which at the minute is in VLAN 1, the only network that can connect to the outside world is VLAN 1, how can I enable the other 2 vlans to connect to the internet?
 
My set-up details are
 
Router
 
interface FastEthernet0/0.1
description *** Data Network***
encapsulation dot1Q 1 native

[Code]....

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Cisco Switching/Routing :: 3750x / 2960S - How To Setup InterVLan Configuration

Jul 6, 2012

I am trying to setup intervlan configuration and stuck on a problem. Here are the details:
 
1. Switches Catalyst 3750-x (as core switch) and Catalyst 2960S (as access switch)

2. Both switches have VLAN 20 and VLAN 1 on their database and both are active. BTW, after I figure out how to properly configure interVLAN routing the native VLAN 1 will not be used anymore. This is just an initial test.

3. VLAN 20 SVI interface (IP 192.168.20.200) on 3750 is up and can be pinged from catalyst 2960.

4. VLAN 1 SVI interface (IP 192.168.170.200) on 3750 is up and also can be pinged from Catalyst  2960.

5. Catalyst 3670 can ping a client computer (IP 192.168.20.10) connected to Catalyst 2960.

6.  IP route enabled on 3750

7. Trunking is enabled on etherchannel connecting both 3750 and 2960

8. Client computer in VLAN 20 (connected to 2960) can ping VLAN 20 SVI interface 192.168.20.200 on switch 3560.But, the client computer in VLAN 20 can not reach any computer in VLAN 1 and vice versa. Strangely, the switches which these computers are connected to can ping each other or any connected client copmuters without any problem as described above.

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Cisco Switching/Routing :: PIM Joins Not Switching Through Catalyst 3560G

Aug 2, 2012

I have the network described below, on which I am running PIM.
 
(network) ---- Embedded Linux Router --(vlan 5)-- CAT 3560G --(vlan 5)-- Cisco 1811 Router ---- Multicast Listener
 
The Linux Router and the 1811 have formed a PIM neighbor relationship.  The multicast listener sends an IGMP Join and I can see the PIM join leave the 1811 router (via "debug ip pim"). Using tcpdump on my linux router I never see the Join come in, but I can see the PIM Hellos (which is why the neighbor relationship formed).

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Cisco Switching/Routing :: VLAN Routing To Internet Through Firewall 3560G

Jul 24, 2012

Since two weeks I have a problem with the VLANs who I started to configure. I hope together we find the way.I have 5 VLANS configured in a CISCO 3560G switch. In my windows server 2003 I configured DHCP scope for each VLAN.One of the requirement to connect vlans each other is to put the IP of each vlan as gateway in the clients.So, how can I do to access to internet?. The ip of my Firewall are in one of the VLAN´s.When the configuration of the LAN only had one DHCP scope the gateway was the ip of my firewall. But now i don´t know how to configure the DHCP server, or the firewall, or the switch, or all of them To get access to internet.

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Cisco Switching/Routing :: 3560G - How To Setup Per Vlan Routing

May 14, 2013

I'm trying to set up per vlan routing on a 3560G switch but it's not performing as I would expect. I've got a server on the 109 vlan with a 10.1.9.100 address and a default gateway of 10.1.9.1 this address is an HSRP gateway and currently resides on 10.1.9.7. When I traceroute through to my user PC on the internal network it receives a response from 10.1.9.7 However, it is then denied by an ACL on the internal firewall which has been applied to interface Eth0/0. It should arrive at the firewall on Eth0/2.109 as it has the 10.1.9.4 address.
 
My goal here is to route traffic on the 101 vlan to a seperate interface on the internal firewall from 109 vlan traffic. I'm either doing something wrong or these routing commands aren't designed to work in the way I'm expecting (I couldn't find any documentation on the ip route command where it is followed by different gateways for different vlans)
 
interface GigabitEthernet0/12
description Internal-FW Eth0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 109
switchport mode trunk(Code )

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Cisco Switching/Routing :: 3560G - PBR Support

Feb 2, 2012

I have a 3560G switch with c3560-advipservicesk9-mz.122-46.SE and 2 routers. The switch has vlans defined. I want to route all traffic on vlan 25 out of one of the routers exclusively. Here is what I have attempted: 

-Set the SDM template to routing & reload
-Define an access-list for the v lan traffic
-Define the route-map
-Apply the route-map to the vlan interface
 
When I attempt the last step I receive the following syslog error:

%PLATFORM_PBR-3-UNSUPPORTED_RMAP: Route-map RM_IMDGuest not supported for Policy-Based Routing
 
Also, the  route-map is removed from the vlan interface after this error is thrown. Im 99% confident that PBR is supported on this switch (am I wrong?). Here is the relevant show output:...

access-list 125 permit ip 192.168.25.0 0.0.0.255 any
route-map RM_IMDGuest permit 10
match ip address 125
set ip next-hop 192.168.5.3
[code]....

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Cisco Switching/Routing :: 3560G - Routing Between 2 Locations

Jan 24, 2013

I was assigned a task to connect two locations through a L2 VPN, The infrastructure which i have are...

Fortigate 80 C firewall at Location A
CISCO 3560G at Location A
CISCO 3750G at Location B
2 MBPS Leased Line connecting two locations.
T1 line at Location A.

The requirements are as follows..

Both locations should be in the same ip range (ex 10.80.71.1/24) Internet for Location B should be from Location A, both locations should talk to each other.

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Cisco Switching/Routing :: Minimum UPS For Catalyst 3560G-48-Poe?

Oct 2, 2012

We have 2 catalyst 3560g-48-PoE protected by a 1000Va 800Watt tripp-lite and I was cheking to see if that is really sufficient. Looking at the charts from Cisco suppport  I would think I should have more, but have not had any issues with a few power outages

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Cisco Switching/Routing :: Switch 3560G PoE-24 Not Booting?

Aug 13, 2012

i facing problem with my switch cisco 3560G, when it power on only System light is green and noting happen.  i check with serial cable ( Console) but noting happen  no booting.

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Cisco Switching/Routing :: 3560g And Set Ip Default Next-hop Command?

Apr 18, 2013

I have 3560g with 15.0(2)SE2 version. I try to give different default gateways for different interfaces.I've already changed the sdm, run "ip routing" and made interest interfaces in "no switchport" with ip addresses.

my route-map is "
route-map ABC permit 10
set ip next-hop 192.168.77.3"

and it is applied on the interface with "ip policy route-map ABC" but  when I try to apply it says "%PLATFORM_PBR-3-UNSUPPORTED_RMAP: Route-map ABC not supported for Policy-Based Routing" everything is fine if I change from "set ip default next-hop" to "set ip next-hop" but it is not I need in the guide of the version it is said this statement is not in unsupported list of route-map commands.[URL]

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Cisco Switching/Routing :: 3560G Upgrade Required

Feb 20, 2013

I have a  WS-C3560G-24TS-S running  12.2(50)SE5 with IPBASE. I have been told that the functionality i seek (multicasting) is only available in the IPSERVICES version of the software. I was reading up on upgrading and saw that i needed to do a show license and get the UID and Serial number and get a license that is tied to my box. But the show license command doesnt work wtih my box. i then found something that said that the 3560's were special in that way. Im not sure how to get this box upgraded. I have a different 3560 running the IPSERVICES elsewhere in my organization. Can i take the IOS Version and  update my switch to that?

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Cisco Switching/Routing :: 3560G Does VTP Depends On BPDU

Aug 13, 2012

We currently have two 5548UP and  two 2232PP switches running on  5.1(3)N2(1a)  and the plan is to connect our old 3560G switches to 2232 PP using enhanced Vpc.
 
I enabled spanning tree bpdufilter on the 2232 PP ports so that we can connect switches to them but VTP is not working on those ports. Is there anything that needs to be done on the HIFs for VTP to work.Does VTP depends on BPDUs? Does enabling Bpdufilter affects VTP?

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Cisco Switching/Routing :: Throughput Of Etherchannel On 3560G

Nov 27, 2012

We have a problem with the throughput over etherchannel in LACP with 2 or 4 ports. It is iSCSI traffic (vmware esxi 4.1 U3) is going from 2 separate NICs (ports) to the etherchannel (with 2 or 4 ports) that has a SAN connected (Nexenta).

The SAN is configured in passive LACP and the switch is in active LACP.  Actually it does not matter if we do LACP or just MODE ON, still same result: ~1GBit/s throughtput in either direction.  Like already mentioned, 2 or 4 ports in the etherchannel make no difference, or the configuration of the etherchannel.

I will post some config data below, but here is the question: Why can't we see traffic beyond 1GBit/s?  Source and destination are capable of doing much more than that (vmware esxi RAID 5 of 1TB SATA; SAN 16 x 1TB NL-SAS). If we look with CNA, we can see that the traffic is balanced equally over the etherchannel ports. With or without QOS or flowcontrol, no difference. This whole traffic happenes on this switch. 
 
!
port-channel load-balance src-dst-ip
!
interface Port-channel5

[Code]....

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Cisco Switching/Routing :: 3560G Random Spike In CPU On Switch

Jan 12, 2013

We have a Catalyst 3560G 24 port POE switch.  It's been running fine for 1+ years.  A few weeks ago we enabled SPAN on it to capture packets.  Today, we had a random spike in CPU on the switch.  Seems hardware swithing continued to work fine, but software based processes choked and effectively took down EIGRP, HSRP, etc.  We collect syslogs from the router and we saw 2 crashes/reboots.  Both showed the exact same error both times, with the same hex values.  I **believe** the CPU usage dropped when a tech disconneted the SPAN port and it's state changed to down, but I'm not 100% sure.Could this indicate an IOS bug (I'm hoping it's not a hardware failure)?  And, how to track this down to see if this could be related to SPAN?  I've disabled SPAN for now.

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Cisco Switching/Routing :: Hosts Can't Reach Each Other In Same VLAN In 3560G

Nov 19, 2012

We have recently started as Internet service provider in an open metropolitan.
 
We use a Cisco 3560G Layer 3 switch, where we have all our vlan where we have konfiguerat ex. Switch (config) # interface vlan 150, an interface for each VLAN capabilities such as int vlan 1 - 10/10 int vlan 2 to 30/10, int vlan 3 100/10 and so on.
Our int vlan is configured as follows:

dhcp relay information trusted
ip address <x.x.x.x> <x.x.x.x>
ip helper-address <x.x.x.x> 
Ports (ex. int Gigabit Ethernet 0/1) are configured as follows:
description Uplink
switchport access vlan x

[Code].....
 
Now the problem; we have a customer in ex. vlan 3 who needs to access a server provided by another customer in the same vlan (vlan 3), and access to each other in the same vlan is not possible. You can access the server from any other vlan, but when it comes to access to another host in the same vlan, you will not reach it.

We suspect that the energy company has configured with pvlan isolated. If we use the command ip local-proxy-arp on each vlan, it works to reach each other, but it seems that our 3560 becomes overloaded when ip local-proxy-arp is enabled and it streaming and use IP telephony it doesn't work. The response time at ping is longer and the loss of packets increase with ip local-proxy-arp enabled. The other operators in the metropolitan also uses Cisco 3560G so the hardware should be sufficient.

We have also tried to add no split-horizon, but it made no difference. How do we get around this without negative consequences? Probably need something that makes you allow to send out the same interface that it came from, because it works as long as you are in another vlan.

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Cisco Switching/Routing :: 3560G / Getting Clarification On Upgrading And Licensing

May 19, 2013

I currently have a 3560G switch running c3560-ipservicesk9-mz.122-58.SE2 I have a spare 3560 V2 switch I want to configure and have ready in case of a failure. This spare switch is running c3560-ipbasek9-mz.122-55.SE5 My plan was to pull the IOS image from the current switch and upload it to the spare that way I have an "idnetical" switch. From what I have read, there are some feature differences between "ipbase" and "ipservices". However, when I run the show license command on the production switch, I get an unrecongnized command error. So that throws into my confusion as if its running an ipservices image, shouldn't it have a license file?

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