IGMP Snooping configuration for Multicasting on Cisco Catalyst 3020

IGMP Snooping configuration for Multicasting on Cisco Catalyst 3020
Hi Guru,
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.
Please shed some light on it

May I request if you avoid making multiple posts of the same issue? This will only confuse people (including you).

Similar Messages

Multicasting (IGMP Snoop) between Nortel and Cisco

We are currently having issues with Zen imaging (multicasting) and our setup is the following.
Please take into account, our knowledge is very limited with IGMP Snooping setup etc.
MDF = 6 Nortel 450-24T's using FirmWare -1.48 / SoftWare - 4.5.2.4
IGMP Settings are such :
VLAN: [ 1 ]
Snooping: [ Enabled ]
Proxy: [ Disabled ] -----> This was on...but once off, runs much smoother.
Robust Value: [ 2 ]
Query Time: [ 125 seconds ]
Set Router Ports: [ Version 1 ]
In the MDF (anythig directly in those switches) images fine now. (once I disabled PROXY)
However I have a few IDF's off the MDF that are using OLD Nortel 350F-HD's (no IGMP Snooping support) and it's horrible (can only do a few computers at a time.
So in one of the IDF's (the biggest one) I pulled out the 350F-HD and replaced it with a CISCO 2950 w/Fiber and it's using 12.1.20EA1 and I left IGMP Snooping on (thinking this will fix it) and couldn't even get ONE machine to connect and image in the multicast session. It's settings were (by default):
Global IGMP Snooping configuration:
IGMP snooping : Disabled
IGMPv3 snooping (minimal) : Enabled
Report suppression : Enabled
TCN solicit query : Disabled
TCN flood query count : 2
Vlan 1:
IGMP snooping : Disabled
Immediate leave : Disabled
Multicast router learning mode : pim-dvmrp
Source only learning age timer : 10
I then completly disabled IGMP Snooping on the CISCO and we're able to Image 5-7 Computers without a crash (more than that and it crashes - disconnects etc)
In the area's that I have All 450's or all CIsco's the imaging seems to go fine. (with minor errors)
Can any one give me some advice (or hopefully ran into this mixed setup before)?
Thank you.

Bosalaza,
Thank you for replying (and I read even more on the ip multicast routing). However I've not ran into the same issue at any school that has 100% cisco switches or 100% Nortels (that are setup correctly and not older than dirt). I think we've not needed the multicast routing setup as we only have one router on the network (and it's flat at the moment anyway). As long as IGMP Snooping is enabled correctly (on the switches) it seems to serve us well.
Although from what I've read (where you pointed me too) it seems even in our setup we would benifeit from taking time to setup "ip pim ....." etc.
I was able to scrounge from another network and change out a few very old Nortels (that didn't support IGMP Snoop) and all seems well now.
So long story short (and incase anyone else needs this info. The Nortel 350T and F - HD's were the main issue. It seems (for now) that a mixture of Nortel 350/450-24T's (any model that at least has IGMP Snooping) and Cisco's mixed (also Snoop on) works pretty well.
I'm going to consider this solved as I was able to fix it with changing out some old product. However I really appreciate your efforts and pointing my towards some good info. (Which I'm going to read up on more, as I'm sure we'll need to get it setup in the near future.)
Thanks again.

VLAN trunking from Cisco Catalyst 3750 to Cisco SF300-48P issue and related

Hello expert,
I'm having difficulties to configure VLAN trunking between Cisco Catalyst 3750 switch with Cisco SF300-48P switch and my workstation unable to get any DHCP IP from our DHCP server via Cisco SF300-48P switch. Below is the snippet of configuration on both switches:
[Cisco Catalyst 3750 Switch]
interface GigabitEthernet1/0/45
description NCC-CC-1stFlr
no switchport trunk encapsulation dot1q
no switchport trunk allowed vlan 101-103
spanning-tree portfast
[Cisco SF300-48P Switch]
interface fastethernet48
spanning-tree link-type point-to-point
switchport trunk allowed vlan add 101-103
macro description switch
!next command is internal.
macro auto smartport dynamic_type switch
interface fastethernet29
switchport mode general
switchport general allowed vlan add 103 tagged
switchport general pvid 103
Are these are correct? Kindly advice!
Thank you very much!
Regards,
Alex

Hi Alex,
for the trunk port on Catalyst on port GE 1/0/45, we need to enable the trunk and for on encapsulation dot1q because this catalyst model is ISL capable also and the SF300 working only with Dot1q Encapsultion
The configuration on catalyst should :
#config terminal
#interface Gi 1/0/45
# switchport encapsulation
#switchport trunk encapsulation dot1q
#switchport mode trunk
#switchport trunk allowed vlan 101-103
#spanning-tree portfast
For SF300 the port trunk it looks fine but for the port where the PC should receive an IP address
#interface fastethernet29
#switchport mode access
#switchport ccess vlan 103
Please let me know after this configuration
Thanks
Mehdi
Please rate or mark as answered to help other Cisco Customers

Cisco Catalyst 2960X Ethernet Switch

"I want to buy Catalyst 2960-X series switches like WS-C2960X-24PS-L,WS-C2960X-24PD-L, buy I'm not very well know about c2960x series. Can someone help me ?"--from yahoo answer.
All Catalyst 2960-X Series Switches use a single Universal Cisco IOS Software Image for all SKUs.Cisco Catalyst 2960-X Family of Switches are available with the LAN Base and LAN Lite feature sets.
WS-C2960X-24PS-L Overview
Catalyst 2960-X 24 GigE PoE 370W, 4 x 1G SFP, LAN Base Switch
WS-C2960X-24PD-L Overview
Catalyst 2960-X 24 GigE PoE 370W, 2 x 10G SFP+, LAN Base Switch

If you buy the LAN Base model, you'll have all of Cisco's normal switching features and options. My company has purchased many of these switches, and they work very well. Remember, these are access layer switches. If you're looking for something to be an aggregate switch for things that push a lot more data (ex. several wireless controllers), you'll want to go for something more powerful.

Does the Catalyst 2960x-48TD support Cisco's IGMP Snooping MIB?

Does the Catalyst 2960x-48TD support Cisco's IGMP Snooping MIB? We have a number of switches from different vendors and have recently begun switching to Cisco's, however unlike the other brands I am unable to audit the IGMP Snooping settings via SNMP. It appears that while the switch supports IGMP Snooping it does not support the CISCO MIB for IGMP Snooping. Is this a known bug and is it fixed in any of the later releases?
Our company is purchasing and deploying C2960X-48TD's and I am tasked with updating our system audit software

Hi Sean,
Nov 21 15:40:42.390: %MCAST-SPSTBY-6-ETRACK_STATS_LIMIT_EXCEEDED: Number of entries in IGMP snooping explicit-tracking statistics has exceeded the maximum limit (32000)
The above log message is written because the number of explicit-tracking statistics entries is bounded to avoid monopolizing of system resources by IGMP/MLD snooping. The explicit-tracking statistics database maximum size is set to the same as that of explicit-tracking limit.
The statistics are split into two banks: permanent and volatile. The statistics entries will be stored permanently (volatile) until the permanent entries threshold is reached, after which the statistics will be stored temporarily up to the database maximum size. When the size of the database exceeds the permanent threshold, a group will be removed on receiving an IGMP/MLD leave. Groups can be removed whether they were installed above or below the permanent threshold. If the number of statistics entries grows beyond the maximum size of the database, then no statistics will be stored for any newly formed groups.
You can disable ip igmp snooping explicit-tracking by the following
1) Configure "no ip igmp snooping explicit-tracking"
2) Configure "ip igmp snooping limit track 0" on global.
3) After ET is disabled, please do a "clear ip igmp snooping statistics".
Here is a reference URL (please make sure you copy and paste the entire link to the browser):
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SX/configuration/guide/snooigmp.html#wp1062242
HTH
Luke

Cisco Catalyst 6500 version 12.2(33)SXI13 configured as DHCP server for a VLAN responds to Windows 7 client with status code NOA

Can anyone help figure out why the Catalyst 6509 is not able to assign an IPv6 address? Thank you.
Cisco Catalyst 6500 version 12.2(33)SXI13 configured as DHCP server for a VLAN responds to Windows 7 client with status code NOADDRS-AVAIL(2). My configuration on the 6500 for the DHCPv6 server is:
ipv6 dhcp database disk0://DHCPV6-DB
ipv6 dhcp pool VLAN206IPV6
prefix-delegation pool VLAN206IPV6-POOL
dns-server 2620:B700:0:1001::53
domain-name global.bio.com
ipv6 local pool VLAN206IPV6-POOL 2620:B700:0:12C7::/65 65
interface Vlan206
description *** IPv6 Subnet ***
ip address 10.2.104.2 255.255.255.0
ipv6 address 2620:B700:0:12C7::2/64
ipv6 nd prefix 2620:B700:0:12C7::/64 14400 14400 no-autoconfig
ipv6 nd managed-config-flag
ipv6 dhcp server VLAN206IPV6
standby version 2
standby 0 ip 10.2.104.1
standby 0 preempt
standby 6 ipv6 2620:B700:0:12C7::1/64
standby 6 preempt
I'm getting a result from my debug as follows:
Apr 10 16:28:02.873 PDT: %LINK-3-UPDOWN: Interface GigabitEthernet2/2, changed state to up
Apr 10 16:28:02.873 PDT: %LINK-SP-3-UPDOWN: Interface GigabitEthernet2/2, changed state to up
Apr 10 16:28:02.877 PDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/2, changed state to up
Apr 10 16:28:03.861 PDT: IPv6 DHCP: Received SOLICIT from FE80::5D5E:7EBD:CDBF:2519 on Vlan206
Apr 10 16:28:03.861 PDT: IPv6 DHCP: detailed packet contents
Apr 10 16:28:03.861 PDT: src FE80::5D5E:7EBD:CDBF:2519 (Vlan206)
Apr 10 16:28:03.861 PDT: dst FF02::1:2
Apr 10 16:28:03.861 PDT: type SOLICIT(1), xid 8277025
Apr 10 16:28:03.861 PDT: option ELAPSED-TIME(8), len 2
Apr 10 16:28:03.861 PDT: elapsed-time 101
Apr 10 16:28:03.861 PDT: option CLIENTID(1), len 14
Apr 10 16:28:03.861 PDT: 00010001195FD895F01FAF10689E
Apr 10 16:28:03.861 PDT: option IA-NA(3), len 12
Apr 10 16:28:03.861 PDT: IAID 0x0FF01FAF, T1 0, T2 0
Apr 10 16:28:03.861 PDT: option UNKNOWN(39), len 32
Apr 10 16:28:03.861 PDT: option VENDOR-CLASS(16), len 14
Apr 10 16:28:03.861 PDT: option ORO(6), len 8
Apr 10 16:28:03.861 PDT: DOMAIN-LIST,DNS-SERVERS,VENDOR-OPTS,UNKNOWN
Apr 10 16:28:03.861 PDT: IPv6 DHCP: Option IA-NA(3) is not supported yet
Apr 10 16:28:03.861 PDT: IPv6 DHCP: Sending ADVERTISE to FE80::5D5E:7EBD:CDBF:2519 on Vlan206
Apr 10 16:28:03.861 PDT: IPv6 DHCP: detailed packet contents
Apr 10 16:28:03.861 PDT: src FE80::21D:E6FF:FEE4:4400
Apr 10 16:28:03.861 PDT: dst FE80::5D5E:7EBD:CDBF:2519 (Vlan206)
Apr 10 16:28:03.861 PDT: type ADVERTISE(2), xid 8277025
Apr 10 16:28:03.861 PDT: option SERVERID(2), len 10
Apr 10 16:28:03.865 PDT: 00030001001DE6E44400
Apr 10 16:28:03.865 PDT: option CLIENTID(1), len 14
Apr 10 16:28:03.865 PDT: 00010001195FD895F01FAF10689E
Apr 10 16:28:03.865 PDT: option STATUS-CODE(13), len 15
Apr 10 16:28:03.865 PDT: status code NOADDRS-AVAIL(2)
Apr 10 16:28:03.865 PDT: status message: NOADDRS-AVAIL

Hello,
maybe hitting the following bug.
Pv6 Address Assignment Support for IPv6 DHCP Server
CSCse81385
Hope this helps

Catalyst 2955T-12 Power Supply n IGMP Snooping

Hello everyone,
I have Two Catalyst 2955T-12 switches, on this switch there are Two Power Supply (DC) options...I want to implement redundant Power Supply solution, can this Two DC Input on Switch will give this solution or I have also external Din Rail power supply...my question is how I can implement redundant power supply so that if one PS of switch fails then automatically other will start?
Also can any body tell me what IGMP snooping do? do I need to configure it? also the command (I need global command as well as port/interface based command)?
Regards,
Shahid

For the power redundancy question, I believe this link will help:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12122ea2/2955hig/hginstal.htm
Also can any body tell me what IGMP snooping do? do I need to configure it? also the command (I need global command as well as port/interface based command)?
>>Layer 2 switches can use IGMP snooping to constrain the flooding of multicast traffic by dynamically configuring Layer 2 interfaces so that multicast traffic is forwarded to only those interfaces associated with IP multicast devices. As the name implies, IGMP snooping requires the LAN switch to snoop on the IGMP transmissions between the host and the router and to keep track of multicast groups and member ports. When the switch receives an IGMP report from a host for a particular multicast group, the switch adds the host port number to the forwarding table entry; when it receives an IGMP Leave Group message from a host, it removes the host port from the table entry. It also periodically deletes entries if it does not receive IGMP membership reports from the multicast clients.
The multicast router sends out periodic IGMP general queries to all VLANs. When IGMP snooping is enabled, the switch responds to the router queries with only one join request per MAC multicast group, and the switch creates one entry per VLAN in the Layer 2 forwarding table for each MAC group from which it receives an IGMP join request. All hosts interested in this multicast traffic send join requests and are added to the forwarding table entry.
IGMP Snooping is by default Enabled globally and per VLAN. If for some reason it is not enabled, "ip igmp snooping" at the config mode to enable it.
There is nothing else to configure.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat2950/12122ea5/2950scg/swigmp.htm#wp1020034
Please rate helpful posts.

Disabling ''igmp snooping'' in a VLAN (no interface VLAN) on Catalyst 6500

Can please some help?
On 4948 or 3560 I can disable igmp snooping in a specific VLAN:
sw4948(config)#no ip igmp snooping vlan ?
<1-1001>     Vlan number
<1006-4094> Vlan number
sw4948(config)#no ip igmp snooping vlan 10 ?
explicit-tracking           Enable IGMP explicit host tracking
immediate-leave             Enable IGMPv2 immediate leave processing
last-member-query-interval Last member query interval
mrouter                     Configure an L2 port as a multicast router port
static                      Configure an L2 port as a member of a group
<cr>
BUT, in 6509-E this command is not enabled:
sw6509(config-if)#no ip igmp snooping ?
access-group IGMP group access group
limit         IGMP limit
I have just found on my 6509 that I can disable igmp snooping in a SVI interface (Interface VLAN)
sw6509(config)#int vlan 20
sw6509(config-if)#no ip igmp snooping ?
access-group                IGMP group access group
fast-leave                  Enable IGMP fast leave processing
last-member-query-interval Configure IGMP leave query timeout
limit                       IGMP limit
minimum-version             Minimum IGMP version
mrouter                     Configure an L2 port as a multicast router port
querier                     Enable IGMP querier processing
report-suppression          Force a report suppression
ssm-safe-reporting          Enable SSM Safe Reporting
static                      Configure an L2 port as a member of a group
<cr>
My current 6509-E IOS version is:
System image file is "sup-bootdisk:s72033-advipservicesk9_wan-mz.122-33.SXH8b.bin"
Do I need to upgrade my IOS version?... or how can I disable ''igmp snooping'' per specific VLAN (no Interface VLAN)?
Any help would be apreciated !
Regards
guruiz

Hi Guruiz,
So, to disable igmp snooping in some VLANs in the 6509, do I need to disable it globally?
Would it be the only way?
That appears to be the only way. If you have an SVI for the vlan you want to run Multicast in, then simply enable PIM and not worry about IGMP snooping. I think, the reason you don't see this command under the layer-2 vlan is because most of the time the 6500 is used as layer-2/layer-3 and not just layer-2.
How could "no ip igmp snooping" applied globally impact my 6509 switch?
It will impact only the vlans that are running Multicast. In general, ip IGMP snooping is used when you have a flat vlan and no SVI. If you have multiple vlans and are running Multicast between them, then you can just enable PIM.
HTH

Cisco Catalyst 2950/2960/3750 Multicast Traffic Preference

Hello all,
we, as a student company act as an ISP for university dormitories. We would like to (if it's possible) deploy QoS to prefer multicast traffic over all other types of traffic.
Devices used in network:
Acces layer: Cisco Catalyst 2950, 12.1(22)EA14
Dristribution layer: Cisco Catalyst 2960G, 12.2(58)SE1
Core layer: Cisco Catalyst 3750G, 12.2(52)SE
Do you see any possibility to solve this with these devices? We have almost no experience with QoS, therefore any help would be greatly appreciated.
Thanks in advance.

Disclaimer
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In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Hmm, I think it should be doable although the 2950s, if non-E variants, are especially weak in QoS features. I.e. those might create some issues.
With the 2960G and 3750G, you often will create problems when you enable QoS because QoS, by default, allocates its buffers resources for 4 egress queues per port rather than using all for 1 egress queue per port. However, this can be countered by QoS parameter tuning, but that takes some QoS expertize to match to your traffic and your overall QoS policy.

RedHat Enterprise Cluster and Cisco IGMP Snooping/Querying

Has anyone else had any experience with IGMP Snooping/Querying and RedHat Enterprise Cluster?
We have been experiencing a large amount of problems with this functionality.
We are running IGMP Querying in our environment and we recently set up a second querier.
Here's the steps we took
Existing querier: 192.168.3.248
Everything was running fine.
Added a new querier on a different switch: 192.168.3.247
At this point, all of our RedHat Enterprise Clusters fenced themselves and needed to be restarted in order to restore
access. In order to restart the RedHat Enterprise Clusters, the physical servers must be rebooted.
Are there any known issues with RedHat Enterprise Clustering and Cisco Switches (3750
series)? I would expect the querier change to be seamless, but it does not seem that this
is the case.

Hi,
In our organizaiton we have Red Hat Cluster with 2 cisco switch (Model: cisco WS-C2960S-24TD-L, Version: "flash:/ c2960s-universalk9-mz.122-55.SE3/c2960s-universalk9-mz.122-55.SE3.bin").
- We are using HP Chassis c7000 and Server is on the chassis. There are 2 service IC & Med. Each server has one service primary and other secondary running.
- The two cluster switches are connected each other with Ether channer trunk (1+1) link. Also these 2 switches are connected to our Mgmt switch for Server Admin access to HP Chassis via OA port. The Red Hat system has cluster lan (pri & sec) & OA lan (01 & 02 of HP chassis) connected to Cluster switches. The Mgmt VLAN is 501 - 172.31.10.0/24.
Problem:
When the CluserSW01 goes down the cluser shifted to CluseterSW02 with Cluser_Secondary_LAN and OA2. But when the ClusterSW01 switch comes again than the communication breaks and cluster don come up.
I was thinking this is either STP or IGMP, well sure though. As these are production systems hence we also couldn't do much more test as well.
If you have face any such issue or have experience with it or know what the problem might be... kindly share with me.
Thanks,
Adnan

Configuring SG500 to work with UCAC-CE and BE3K for multicast paging

I need help configuring multicast on my SG500 swtiches. One is L3 no router involved. The Attendant works fine paging in Unicast. but I need to set it up for Multicast. I have no experience working with Multicast and I'm not sure what to do.. I dont even know if I need a router.. since the Switch is acting as a L3.

Hello,
While I've not personally set this up, I did run across Smart Tip that may aid in your quest.
https://supportforums.cisco.com/docs/DOC-13461
Good luck,
Albert

Multicast mac address isn't learned, igmp-snooping

I have PIM router which connects to the cat 2960 switch and also I have host which connects to another port on the same switch. Host was joined to the IGMP group 224.1.1.1. I see that the router generates igmp-query and the host respons. IGMP-snooping process sees that process and updates appropriate entries:
2960-5#sh ip igmp snooping mrouter
Vlan ports
15 Gi2/0/32(dynamic)
2960-5#sh ip igmp snooping groups
15 224.1.1.1 igmp v2 Gi2/0/32, Gi2/0/33
But when I command "sh mac address-table multicast" I see nothing:
2960#sh mac address-table multicast
Vlan Mac Address Type Ports
What is reason of this problem?

There is the following statement from the "CCNP Practical Studies: Switching:
the process of populating the bridge table with multicast MAC addresses is based upon inspection of the destination MAC address, unlike unicast MAC addresses where the source MAC address of unicast frames is examined to generate bridge table entries.
And this book describes other parts of the mac learning process and says that after exchanging IGMP-message MAC-table must be populated by multicast mac-addresses. But later I found some Cisco and Jupiner documentation which says there is two way to perform multicast forwarding - MAC and IP. Default metod is IP multicast forwarding. When this metod is used multicast MAC-addresses isn't learnt and process of packet forwarding uses special forwarding cache which includes list of mapping IP and appropriate interfaces. It all means that this book isn't actual. All modern switchs perform multicast forwarding by IP metod and MAC-addresses don't populate CAM.

Multicast Traffic - IGMP Snooping

We are currently running a Hybrid CATOS/IOS Environment with Sup2 and MSFC2 Line Cards. The Sup Version is
8.4(3) and MSFC is 12.1(26)we want to run multicast traffic between our internal network to our external Govt Provider in the form of a particular Video Conferencing Client. We have been told that seeing we are running CATOS on our Sup2 engines we will get periodic dropouts of multicast traffic between our internal and external Depts if we don't upgrade to an Native IOS Environment. They are saying that we cannot disable igmp snooping on a per-Vlan basis under our Current Hybrid Environment unless we upgrade to Native IOS. Can we disable igmp snooping on a per-vlan basis using our current CATOS version or do we have to upgrade to a Native IOS Software set ??
Thanks Simon

at the catOS level, you only have the ability to enable igmp, not per vlan.
on the msfc SVIs you should then be able to enable or disable igmp at the VLAN interface level.
this may provide the abilities you are looking for.
try this and let us know if any further issues or post your config for review.

Multicast trafficis being flooded on igmp snooping enabled switch

I have two devices connected to the same switch, S streams video using multicast, H doesn't send join request, but the multicast is being sent to H, actually it is being flooded. Both hosts are in the same vlan.
Distribution-1#show ver | in WS
cisco WS-C2960-24TT-L (PowerPC405) processor (revision E0) with 65536K bytes of memory.
Model number : WS-C2960-24TT-L
* 1 26 WS-C2960-24TT-L 15.0(1)SE2 C2960-LANBASEK9-M

Duplicate post.
Go here: https://supportforums.cisco.com/discussion/12218811/multicast-trafficis-being-flooded-igmp-snooping-enabled-switch

Recommended IOS XE version for Cisco Catalyst 4500X-16 SFP+ Switch

Could someone confirm IOS XE version for Cisco Catalyst 4500X-16 SFP+ Switch please.
It already has 03.06.00.E on it. I am planning to configure VSS on it with similar switch.
VSS will participate in various Etherchannels (MES).
Just wondering if there are any known bugs in this IOS XE release.

Use the Bug Search Tool to look for issues with vss, vsl, etc.
https://tools.cisco.com/bugsearch/

IGMP Snooping configuration for Multicasting on Cisco Catalyst 3020

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