Cisco Infrastructure :: Configuring Multicast Environment Using 2 Ports On 3560
Feb 28, 2006
Ihave a 3560 w/multicast support and I'm trying to configure a simple environment. I have 2 ports configured, one for the multicast server and the other for the client. Each are on their own subnet, so I have an ip route between the two. My run config on both ports is:
ip multicast-routing distributed
interface fastethernet 0/3 & 0/4
ip pim version 2
ip pim sparse-dense-mode
I'm using vlc server /client configured to use 224.0.0.1 on my isolated network. I can see the mulitcast traffic going into the port, and I the client is sending reports, but I think the 3560 is dropping the packets, since I don't see them coming in the client port. Need to configure a simple multicast environment using 2 ports on a Cisco 3560.
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Feb 1, 2012
I am working in an enterprise LAN environment. We have about 100 switches, mostly 3560 and 3750's. This is a typical Cisco network, yet it's flat. No routing on the access layers. The core switch does do the routing. We use an third party vendor network monitoring tool, and we use Secure CRT to remote into devices.
Here's the problem. There was a device we stumbled into that had not been put into our monitoring software. It has the same IOS as our other devices. All I can say is that it's the same version and type. Each device has a management v LAN. And each device has it's own management IP. An ACL exists to prevent unauthorized SSH access into the devices, yet allows the management v LAN scope to get in.
So, here's the problem...we can't SSH into our problem mystery device, let's call it Switch X. Switch X has an IP of 10.10.100.150. Now, I can be logged into it's up link device, let's call it switch B. Switch B has an IP of 10.10.100.130. The ACL allows all devices from 10.10.100.0/24 to SSH. Our PC's at our desk are also in the same management V LAN. SSH version 2 is on the configs, and the domain names are the same on these two devices.
So, let's be clear. From my desktop, I can connect to any device on my network EXCEPT switch X. When I try to connect using SSH, port 22...it just sits there until it times out. I can do the same thing to any other switch, and connect just fine. We are using TACACS+ and RADIUS as well, and they are up and running just fine. The configs on Switch X like I said are the same for switch B, except it's IP address of course. While logged into switch B, I can do a CDP neighbor and see switch X connected via trunk link. Both sides are running dot1q encapsulation, and both are in trunk mode. I can ping switch X from switch B. When I try to SSH from B to X..I get timeout with no connection.
So, I hiked over to the building where switch X is located. I consoled into the switch. I confirmed that the ACL is the same as the ACL for switch B. It is set up to allow the management v lan inbound on the VTY 0 - 15. Yes, it's access-class (name) in on both vty 0 4 and 5 15. It also is set up for transport ssh in and transport ssh out.
I rechecked the domain name on Switch X; it was correct. I also did a crypto key and regenerated the crypto key. SSH v2 came up. Again, while in Switch X, I can do a CDP neighbor and see switch B. But I cannot SSH from switch X to Switch B, or any other devices that I tried. Now, we did find a config error with VTP; the VTP domain name was different. But VTP has nothing to do with SSH. Just to placate my co-workers, I went ahead and renamed the VTP domain name (it's running transparent mode). After I regenerated the crypto key, I saved everything of course. I then reloaded the switch. When all came back up, I still could not SSH
This is a 3560 switch, and it is trunk to a 3750.
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Mar 24, 2013
I have started to notice an increase in traffic from all my LAN workstations to the multicast address of 224.0.1.20, all with the same destination port (79). IANA shows this address as reserved for "experimental testing". Are there any typical applications or protocols that use this multicast address? My first thought was malware running on the hosts but it's a little tricky to prove.
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Mar 15, 2011
I have configured a Aironet 1310 bridge as a WGB and is connected to a Aironet 1242AG AP wirelessly!A sensor(IP device) is wired into the 1310WGB. The sensor needs MULTICAST to operate!I checked the DETAILED STATUS of the RADIO and both the 1310 and 1242 are blocking multicast!The RELIABLE MULTICAST TO WGB option is enabled on the 1242AP already!
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Feb 8, 2006
One of our Cat5513 has been displaying a lot of the error message below:
%SYS-4-P2_WARN: 8/Invalid traffic from multicast source address 01:00:5a:52:4c:4d on port 8/58
The frequency of this is quite disturbing. What this error is about? Module no.8 is our Gigabit Ethernet WS-X5410. Can that multicast address be mapped to an IP address or unicast mac-addresS? How can i go about resolving this?
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May 9, 2012
I start configuring Cisco 2821 router for multicast . First short description and attached sheme explanation. Let we say I have small network with 100 users. One router and Cisco switch 3560. Two VLAN’s, one for data another for multicast. Data from internet works fine but now I want to connect multicast servers (or source of more multicast streams) from another subnet. Router have three interfaces.I expect there should be no problems with multicast configuration, but unfortunately it is not like I expect. What I did ?
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Mar 24, 2013
I have WS-3750G-12S-E with me and would like to configure BGP on the same. whether it is advisable to configure BGP on 3750G or not.
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Jan 31, 2012
We are having problems configuring NAT on our Cisco 1921 Router. Below is the running config. The problem we're having is for example our FTP server 192.168.1.16, cannot be accessed from its outside IP address, which is NATed on the router. The server is verified to be up and running and when we do a show debug ip nat, we see the router is translating outside users attempting to access the ftp server to it's correct internal IP address.
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Sep 13, 2012
I have two EHWIC VA -DSL cards in a Cisco 2901.
I want each to connect to a separate ISP, one ISP for VOIP, one for Internet. I want to then have a VLAN for VOIP, a VLAN for DATA
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Mar 27, 2011
What is the difference between v02 and v03 of ws-3560-48ts-s switches? is it just small corrections or functionality?
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Jul 13, 2011
I am having LMS 2.5 and nearly 50 cisco 3560 in my network. And I want to configure rcp. How can I do it.
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Dec 27, 2011
In my lab setup i configured Cisco 3560 switch.
VLAN 20 and VLAN 30 i configured.
VLAN 20 interface IP : 192.168.20.1/24
VLAN 30 interface IP : 192.168.30.1/24.
Inter-vlan communication is happening fine.
For testing for purpose i configured extended ACLs. Here is my requirement: I want to stop communication from VLAN 30 to VLAN 20 but not vice-versa.
Here i configured like this:
access-list 111 deny ip 192.168.20.0 0.0.0.255 192.168.30.0 0.0.0.255
access-list 111 permit ip any any
applied ACL in VLAN 30 interface 'in' direction.
ip access-group 111 in
In this scenario, communication is stopping in both directions. If i ping from one of the IP VLAN 20 to one of the ip of VLAN 30, i was gettng Requested time out. And if i ping from one of the IP VLAN 20 to VLAN 30 interface IP, i was able get pinging.
From VLAN 30 to VLAN 20, i was getting destination host unreachable from VLAN 30 ip( Its fine as its my requirement). So, solution needed to communicate from VLAN 20 to VLAN 30.
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Jan 29, 2013
We have 2x WS-C3560X-48 with the 10Gb SFP C3KX-NM-10G module.I want to use the 10Gb SFP (with a redundant 1Gb link) between each of the switches.Below is the configuration what I think I should use. Is this correct?
SWITCH1
int TE1/1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode active
[code]....
We also want to utilise Link Agrrigation for the servers that attach to the switch. Would this config be correct?
port-channel load-balance src-ip
int range x
switchport mode access
switchport access vlan 1 (They are all on the default vlan)
spanning-tree portfast
channel-group x mode active
(Then I would configure the LACP config on the server) Is there anything I am missing?
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Jan 31, 2012
I have a 3560 8 port switch. Int gi0/9 is trunked to another switch downstream. When I try to configure int gi0/10 to trunk to a switch upstream the interface on the switch goes down and I have to either reboot the switch or plug directly into the switch and telnet into it to turn off trunking on the interface. When I configure trunking on the interface on the upstream switch that connects to this interface the same happens on that switch. The upstream switch is a 3750 with 12 sfp ports. Several interfaces are trunking to other switches from this switch. Spanning tree is not configured on the 3750 at all , and is not configured on either gi0/10 or gi0/9 on the 3560. I was consoled into the 3560 during a reboot after the interface went down, a message came up that said something like "Spanning Tree returning gigabit ethernet 10 to constant state" Why would I get this message if spanning tree is not enabled on the gig ports on either end of the trunk? There is no loop to require spanning tree to shut down an interface. I have several other 3560's configured as I would like to configure this switch and they are trunking without issue.
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Mar 29, 2012
As per my attached diagram, I have three switches (Cat 3560-E and couple of Cat 2960-G)
Each PC is on different vlan
PC -1 on vlan 100
PC-2 on vlan 200
I need to connect PC-1 and PC-2 to the server. Server has no fixed vlan and can be changed.
Restrictions:
1) can’t change PCs vlan assignment.
2) can’t add 2nd NIC in the server.
I’ve tried private vlan but it requires separate physical ports for host and/or community vlan and somehow it did not work. I could be wrong Trunking using dot1q enabled on port 2 on all switches and connection works fine (server to PC-1 or server to PC-2) by enabling switchport access vlan 100 or switchport access vlan 200. However I need port 5 on switch-1 to respond to vlan 100 and 200.
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Feb 13, 2013
Is there anyway to configure a 5508 via the SFP ports? Or do you have to use the service port for autoinstall or NCS auto provisioning? It looks like it grabs a DHCP address but it doesn't seem to like telnet,ssh ,HTTP or HTTPS.
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Oct 26, 2011
I've put a C3KX-NM-1G module into a 3750x but can only get ports 1,3 to stand up, ports 2 and 4 dont operate. ports 2,4 are not shutdown and dont come up with working SFPs etc in another switch.
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Nov 19, 2012
i have a 3560 connecting to a sp with limited bandwidth. i have one interface on the switch whose traffic i do not want to drop. i want this traffic to go into the high priority queue. i am not sure how this should be configured, but here is my best guess and my current qos configuration on the switch:
qos map cos-dscp 0 8 16 26 32 46 48 56
mls qos srr-queue output cos-map queue 1 threshold 3 5
mls qos srr-queue output cos-map queue 2 threshold 1 4 6 7
mls qos srr-queue output cos-map queue 2 threshold 2 3(code)
since cos 5 is mapped to dscp 46 then this traffic would go into the priority queue. is this correct ?
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Mar 10, 2013
I am using 3560 switch senerio is that we have dhcp server on and I want that switch filter mac on whole switch ports not on a some port. Switch only give IP to the mac whcih is in mac table of switch/particular which we enter manually.I have read chapter 62 of port security but it doesnot fulfill my requirements.I am also using 3com 5500Ei switch in which we dont have to bind a mac on every port, we just enter a mac in the switch and it filter itself by using simple commands.DHCP server is not in our hands, we cant do any things there.
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Jul 30, 2011
If all you have is a high end cisco router available, can you plug in hosts to the router ports, and configure them within the same subnet? (When I try to configure ports within the same subnet, I receive a "same subnet" error.
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Aug 15, 2012
how many Gigabit port will be supported by Cisco 7206VXR with G1 engine model. By deault we hot 3 GE, is it possible to add additional Gigabit ports with the existing hardware.
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Apr 16, 2002
I have a switched network of C2980 & C3548 switches with multiple VLANs. I would like to understand the difference between Multi- VLAN ports and trunk ports. What circumstances would dictate using one over the other? If I configure the router port as Multi- VLAN, does the router still require sub-interfaces?
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May 15, 2012
have problem with switch. 3560, Some of gi ports have outdiscards errors and switching is very slow.
ServerSwitch>show int counters errors
Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards
Gi0/1 0 0 0 0 0 8722
Gi0/2 0 0 0 0 0 157
Gi0/3 0 0 0 0 0 0
Gi0/4 0 0 0 0 0 0
Gi0/5 0 0 0 0 0 0
Gi0/6 0 0 0 0 0 446
Gi0/7 0 0 0 0 0 0
Gi0/8 0 0 0 0 0 0
Gi0/9 0 0 0 0 0 0
Gi0/10 0 0 0 0 0 0
Gi0/11 0 0 0 0 0 0
Gi0/12 0 0 0 0 0 1705658
Gi0/13 0 0 0 0 0 9
Gi0/14 0 0 0 0 0 74
Gi0/15 0 0 0 0 0 0
Gi0/16 0 0 0 0 0 0
Gi0/17 0 0 0 0 0 9
Gi0/18 0 0 0 0 0 0
Gi0/19 0 0 0 0 0 0
Gi0/20 0 0 0 0 0 0
Gi0/21 0 0 0 0 0 0
Gi0/22 0 0 0 0 0 0
Gi0/23 0 0 0 0 0 922
Gi0/24 0 0 0 0 0 0
But in monitoring i see only 80 Mbit max bandwith utilization on gigabit links.
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Sep 5, 2011
I recently acquired a 2509 router that I plan to use as a serial device router. My question is, how do you create the virtual com ports on Windows and Linux machines to point to the TCP address:ports in the 2509 router? Is there software or drivers that do this? Or something third-party?
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Apr 9, 2012
We are experiencing two of our layer 3 switches (3560 PoE and 3750 PoE) switches giving us problems with giving power to IP phones. These switches have an embedded PoE module and would previously give power to all IP phones on all its ports. Now all of a sudden over the past few months 6 of these ports have stopped powering phones. The phones are the same ie. 7911 and they take less than 15.4 W. We believe that the PoE module has started malfunctioning and has stopped giving power to all the ports. The port 'grants' power and then removes it. Below is a link showing all the messaged we receive on the terminal session. It is NOT a hardware fault with the PoE: [code]
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Apr 25, 2012
I have a connection between switches, There are a 3560 (Gi0/37) and a 2960 (Gi0/1), the problem is in the port Gi0/37 of the 3560 switch and this is the log. [code]
I dont understand what is the problem, actually i have added the command power inline never on the port and the problem is solved, but we haven´t changed configuration.
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Jan 21, 2013
As per the attached diagram: How do I configure the 2 ports on the 3560 (Ports 6 & 7) and the connected ports on each of the 2960 switches (Port 25) to provide redundancy.
If the up link from Switch A dies then I need the traffic to flow through the trunk and utilize the up link on Switch B with minimal delay (milliseconds).
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Aug 1, 2011
Is possible connect and configuring two cisco wlc in high availability to 3 switches in stack 3750 in difference ports?For example
WLC A (Primary) - SWITCH MASTER
WLC B (Secondary) - SWITCH SLAVE
How can i connect the wlc's in HA to get a redundancy in the stack?
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Jul 1, 2012
Can you configure a Cisco 1941 to use an 8 port EHWic module and the 2 onboard GE ports in a single LAN?
I've discovered you can't have the on GE ports associated with a VLan, and I'm when I've previously researched for a solution, bridging was mentioned but I cannot seem to get it to work (or completely understand it)The reason I would like to use all 10 ports on for the LAN is becuase I have 10 devices I need to connect to the 1941?
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Apr 18, 2012
Why do we need MP-BGP (and not BGP) to exchange multicast prefixes between multicast domains?
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Feb 19, 2013
I try to pass multicast traffic between two vrf on the same 3750 switch. I have IP services IOS and sdm template routing.
here is my config:
ip routing
!
ip vrf vpn2
rd 1:1
mdt default 232.1.1.1
route-target export 1:1
route-target import 1:1
[code]....
Now I'm stuck - I don't know what to do to pass multicast traffic. Do I have any chance to run this config on 3750 chassis?Perhaps "Configuring Multicast VPN Extranet Support" document will be useful, but it concerns Catalyst 6500? [URL]
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Jan 5, 2012
I want to create a network with a bunch of routers and switches to be used as a test network for company employees to remotely login and learn networking.I don't want this network to interfere with the rest of the network in any way.I am basically trying to create a stub network or a passive network!!
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Jan 23, 2013
Currently I'm with a pure Cisco shop, running every LAN Switched infrastructure (even in the HQ datacenter) with PVST+, I'm noticing in the documentation I've read and labs I've created that RSTP is... great, and I've observed that even the uplinkfast functionality seems to be build in by just enabling rapid-pvst. Of course I'll propose a migration plan, document the network, diagram it entirely and provide effective steps to implement the change, but that's assumed from any get'go.
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