Viewing the Current IGMP Configuration. How IGMP operates. 109 2021-11-25T16:52:19+01:00 SWITCHNAME. When an IGMP snooping querier is enabled, it sends out periodic IGMP queries that trigger IGMP report messages from hosts that want to receive IP multicast traffic. show ip igmp snooping querier [ detail | vlan vlan-id] Displays information about the IP address and receiving port for the most-recently received IGMP query messages in the VLAN. 2, you can configure the IGMP-snooping querier version 2 or 3. Values range from 1 to 25 seconds with a global default of one second. Step 3 vlan vlan-id Example: n1000v(config)# vlan 2 n1000v(config-vlan)# Places you in CLI Global Configuration mode for the specified VLAN. 0. This value is used for VLANs that do not have a value specified. local ips = {} -- this is our tap. Thanks a lot for your response and kind support!!! Really appreciate. On these two switches I have two VLANS defined 41 and 42. no ip igmp snooping vlan vlan-id querier address. Step 10. (Optional) Enter vlan vlan-id to display information for a single VLAN IGMP-snooping querier and per-VLAN IGMP-snooping proxy configuration 7. Select or Add an interface. Next, select the proper IGMP version. 2, you can use the CLI to enable IGMP proxy per FortiSwitch unit. Assigned interfaces ge-0/0/0, ge-0/0/1, ge-0/0/2, and ge-0/0/12 to vlan100. This daemon is a querier helper for the Linux bridge. Command Objective. IP manages multicast traffic by using switches, multicast routers, and hosts that support IGMP. 2. configure a SVI interface belongs to the vlan with "ip pim sparse-dense-mode" on one switch. Junos OS Release 13. Parameters IGMP/MLD querier is detected by receiving an IGMP/MLD query message (the query message can be received by an external multicast router or locally by bridge interface with enabled multicast-querier), only then the bridge will start to restrict unknown IP multicast traffic and forward the known multicast from the multicast database (MDB). D7402_DC(config)#exit. Starting in FortiOS 7. (Optional) Enter vlan vlan-id to display information for a single VLAN Mar 14, 2019 · When this feature is enabled, the controller snooping gathers IGMP reports from the clients, processes them, creates unique multicast group IDs (MGIDs) based on the Layer 3 multicast address and the VLAN number, and sends the IGMP reports to the IGMP querier. no ip igmp snooping vlan "for all the other vlans used on the switch but not used for igmp". Removes the group from the associated VLAN port if no hosts respond to an IGMP query message before the last member query interval expires. Syntax: show ip igmp[vlan <vid>] Displays IGMP configuration for a specified VLAN or for all VLANs on the switch. Monitoring value appears only = when igmp-s= nooping is enabled. The switch performs this function if there is no other device in the VLAN, such as a multicastrouter, to act as Querier. If there is no SVI IP address, the device uses the first available IP address configured on the device. Oct 5, 2017 · To configure the IGMP version of an IGMP Snooping querier on a specific VLAN, use the ip igmp snooping vlan querier version command in interface switch configuration mode. Switch (config)# vlan configuration 999 Switch (config-vlan-config)# no ip igmp snooping Switch (config-vlan-config)#. show ip igmp < vid > config. domain. This is what the switch should do with IGMP snooping disabled. I 01/15/01 09:01:13 igmp: DEFAULT_VLAN: Other Querier detected. Jun 26, 2024 · To define the source IP address that the IGMP snooping querier uses, use the ip igmp snooping vlan querier address command in Global Configuration mode. In a multicast network that runs IGMP, you do not need to configure an IGMP snooping querier because it may affect IGMP querier elections by sending IGMP general queries with a low source IP address. switch (config-vlan)# ip igmp snooping last-member-query-interval seconds. Querier-capable device in order for IGMP report received from xxx. # Enable IGMP snooping, and enable dropping unknown multicast data for VLAN 100. IGMP query interval is 125 seconds. Syntax: [no] ip igmp For example, here are methods to enable and disable IGMP on the default VLAN (VID = 1). D7402_DC(config)#no ip igmp snooping querier. You are here: CLI: Configuring and displaying IGMP. 10 and VLAN15=1. 2 v3 Et5 Once a is querier detected in the VLAN, the asterisk Mar 29, 2015 · But what he is saying is: With IGMP snooping enabled and no querier (no querier, no PIM) the switch should drop all multicast packets because of igmp snooping and no known groups. If there is no IP address configured on the VLAN interface, the IGMP snooping querier tries Nov 21, 2017 · If there is no IP address configured on the VLAN interface, the IGMP snooping querier tries to use the configured global IP address for the IGMP querier. Only untagged IGMP/MLD general membership queries are generated, IGMP queries are sent with IPv4 0. local tap = Listener. On the 6400 Switch Series, interface identification differs. config-if. For example, the following no vlan 1 command disables the querier function on VLAN 1. Before you configure IGMP snooping, be sure you have: Configured the vlan100 VLAN on the switch. Although the switch automatically ceases Querier operation in If there is no global IP address specified, the IGMP querier tries to use the VLAN device virtual interface (SVI) IP address (if one exists). To disable the IGMP querier on specific VLANs, use the no form of this command. In the Mar 15, 2021 · SW# no ip igmp snooping querier. 04-14-2011 01:44 AM - edited ‎03-06-2019 04:36 PM. Tip: On devices that support the all option, when you configure IGMP 5. 2. When. # Configure Switch A as the IGMP snooping querier. Enter system view. Create a custom lua listener and call it from wireshark. Syntax. The Sx300 is not a full. 后续任务. 执行本命令前需执行 igmp-snooping enable（系统视图） 命令使能全局IGMP Snooping功能。. Configures an IGMP querier on an interface, depending on the command context you are in. unless the VLAN has an IP Address (use the 'show ip' command. Description. As you can see from the latest command, I have to Jul 30, 2017 · Enable IGMP snooping on your VLANs under the IGMP VLAN configuration. Multicast routers available within this VLAN. To check if this host is the last host to leave the group, the software sends an IGMP query message and starts a timer that you can configure called the last member query response interval. ProCurve(config)# vlan 1 ip igmp Enables IGMP on VLAN 1. Step 4 ip igmp snooping Example: n1000v(config-vlan)# ip igmp snooping Enables IGMP Applies for a multicast group membership. Examples. In order to restrict multicast being broadcasted to all ports in the first VLAN, IGMP Snooping Querier is enabled on the switch and this is working fine ion this VLAN. I 01/15/01 09:01:13 igmp: DEFAULT_VLAN: This switch is no longer Querier. Enter Name, Interface IP, and VLAN. In the Jan 27, 2022 · If there is no global IP address specified, the IGMP querier tries to use the VLAN device virtual interface (SVI) IP address (if one exists). Although the switch automatically ceases Querier operation in QFabric systems in Junos OS Release 14. The daemon comes with a little helper tool called querierctl which can be used to check the status of IGMP per interface, but also to dump the bridge's MDB in a more human-friendly format. Default: 10 seconds. Mar 2, 2023 · Here are some top considerations to keep in mind when configuring IGMP snooping: Enable IGMP snooping on all switches: To ensure proper multicast traffic forwarding and filtering, IGMP snooping should be enabled on all switches in the network. Now the issue: The BCC sends about 300Mbps of multicast stream into vlan 100. 3 multicast IP address that are not IGMP packets to the router and to the host that has joined the gr the ports where needed. 3 multicast IP address that are not IGMP packets to the router and to the host that has joined the gr Jul 29, 2011 · Step 7. Here is a well documented example: -- Declare the window we will use. The default querier capability is “enabled”. Use the show ip igmp snooping querier vlan command to display the IGMP version on a particular VLAN. Internet Group Management Protocol (IGMP) snooping constrains the flooding of IPv4 multicast traffic on VLANs on a device. The DR and the IGMP querier are selected based on different criteria and may be different devices on the same subnet. Please correct me if i am wrong. 查询器发送通用查询报文的时间间隔。. Configuring and displaying IGMP (CLI) Viewing IGMP configuration for VLANs. The function of the IGMP querier is to poll other IGMP-enabled devices in an IGMP-enabled VLAN to elicit group membership information. IGMP configuration for all VLANs on the switch. 2 or later for EX Series switches. Displaying IGMP status for a VLAN. This can help prevent multicast traffic from flooding the network and reduce congestion. Configuring an IGMP querier on interface VLAN 2: ip igmp snooping vlan vlan-id querier address ip-address no ip igmp snooping vlan vlan-id querier address パラメータ •vlan-id：VLANを指定します。 •ip-address：IPアドレスを指定します。 デフォルト設定 VLANのIPアドレスが設定されている場合は、IGMPスヌーピングクエリアの送信元アドレ The ip igmp querier command lets you disable or re-enable the ability for the switch to become querier on the specified VLAN. This is actually the VLAN which is unknown to the core switches (so far ip igmp querier. 2, you could use the CLI to enable IGMP proxy on a system-wide basis. IGMP snooping is now available on all platforms and conforms to RFC4604 standards. 前置条件. 1. The PIM will be set as 'passive' later, so there is no need to worry about the PIM mode, DR Priority, or RP Candidate. All IPTV nodes join VLAN 100 via access ports. If the switch is enabled as a IGMP Querier, it starts after 60 seconds have passed. The no form of this command sets the IGMP querier interval to the default value of 125 seconds on an interface. ProCurve(config)# no vlan 1 ip igmp Disables IGMP on VLAN 1. with no IGMP traffic (queries) detected from a Multicast router. Enabling IGMP allows detection of IGMP queries and report packets used to manage IP multicast traffic through the switch. In the above scenario, if the other device ceases to operate as a querier on the default VLAN, then the switch detects this change and can become the querier as long as it is not pre-empted by some other IGMP When PIM is enabled, automated election will override querier-wait-time configuration. By default, IGMP proxy upstream interface will send IGMPv3 membership reports and it will detect what IGMP version the upstream device (e. So it seems that just having this device (that is apparently an mRouter) was creating the groups for us, and we did not have to have a querier. Aug 15, 2018 · To configure the IGMP version of an IGMP Snooping querier on a specific VLAN, enter the following: Note: In this example, version 3 is used. xx. The no form of this command disables IGMP querier on an interface. Internet address is 20. Apr 12, 2024 · Configuring an IGMP Querier. This action serves both to quickly discover the group members active on the subnet Querier operation. The following command can be used to confirm if an “IGMP querier” has been detected in the concerned VLAN Switch#show ip igmp snooping querier vlan 10 Vlan IP Address Version Port ----- 10 10. It also looks up the forwarding table for a matching entry as follows: If no match is found, the snooping switch creates a forwarding entry with the receiving port as an outgoing Nov 1, 2023 · Select the VLAN interface child of the Fortilink LAG interface. (Optional) Enter vlan vlan-id to display information for a single VLAN Dec 2, 2011 · 1. A set of hosts, routers, and/or switches that send or receive . It should not flood them. queries are not sent when the mode is disabled. The no form of the command sets the IGMP querier interval to default value. config-lag-if To view IGMP interfcace VLAN information, use the following command: (host)#show ip igmp interfaces vlan 12 vlan12 is up, line protocol is up. The others also have the "Querier Admin Mode" enabled globaly. switch(config-vlan)# ip igmp snooping last-member-query-interval 3 . From Cisco documentation I found: "When there is no multicast router in the VLAN to originate the queries you must configure an IGMP Snooping querier to send membership queries". Query messages are used to elect the IGMP querier as follows: The switch hardware can distinguish IGMP information packets from other packets for the multicast group. If no other querier is detected, the switch then also functions as the querier. There is one edge switch that is designated as the IGMP snooping querier (via the command "ip igmp snooping querier". IGMP is an internal protocol of the IP suite. Note: Prior to CatOS 8. If you need to disable the Mar 25, 2018 · As a result, the Catalysts will simply flood all multicasts as if they were broadcasts. : %IGMP_QUERIER-4-SAME_SRC_IP_ADDR: An IGMP General Query packet with the same source IP address (x. Regards, Adeeb The no form of this command sets the querier max response time value to the default of 10 seconds on an interface. VLAN単位でIGMP snoopingを無効化することは可能です。. Onl= y shows detected external IGMP querier, local bridge IGMP querier (includin= g IGMP proxy and PIM) will not be displayed. IGMP router version 2. View IP Multicast Information to see IGMP-enabled interfaces, the IGMP version, Querier address, robustness setting, limits on the number of multicast groups and sources, and whether the interface is configured for Immediate Leave. 36 on Port-ChannelX for xxx. Configures the interval between IGMP queries on an interface, depending on the command context you are in. Some switches magically and silently disable igmp snooping in the absence of You are here: IGMP configuration example. 2) A second VLAN, received via a trunk restricting only this VLAN. However, the DR priority needs to be filled in: set it to a value of '1'. Configuring an IGMP querier on interface VLAN 2: Aug 27, 2021 · When a multicast host leaves a group, a host that runs IGMPv2 or later sends an IGMP leave message. 1X53-D15 support the igmp-querier statement, but do not support this statement in Junos OS 15. ip igmp snooping querier ip-address . 3. If an IGMP Querier later comes into the VLAN, either as a standalone router, or some switch configured for this functionality using the IGMP Snooping Querier feature, IGMP Snooping reactivate itself and will kick into action. Although the switch automatically ceases Querier operation in Nov 17, 2019 · The core switches do not habe IGMP Snooping enabled but all the others have. %IGMP_QUERIER-4-ZERO_SRC_IP_ADDR: An IGMP General Query Apr 5, 2024 · show ip igmp snooping querier [ detail | vlan vlan-id] Displays information about the IP address and receiving port for the most-recently received IGMP query messages in the VLAN. To define the source IP address that the IGMP snooping querier uses, enter the following: Note: If an IP address is configured for the VLAN, it is used as the source address of the IGMP snooping ip igmp querier no ip igmp querier Description. Values range from 1 to 25 seconds. Command context. situation where a regular IGMP Querier does not exist. The information in the table tells the switching engine to send frames addressed to the 224. To return to the default, use the no form of this command. ProCurve(vlan-1)# ip igmp Same as above. 15. local tw = TextWindow. ip igmp querier no ip igmp querier Description. 3 multicast IP address that are not IGMP packets to the router and to the host that has joined the gr Feb 16, 2011 · 1) One VLAN with multicast, no queriers within the VLAN. Range: 10-128 seconds. 1/24 access disable —Disable IGMP snooping on all or specified VLANs. Currently IGMP (IPv4) is supported, MLD (IPv6) querier support is planned. If there is no global IP address specified, the IGMP querier tries to use the VLAN device virtual interface (SVI) IP address (if one exists). So here's my test: IGMP snooping enabled; No IGMP querier in VLAN; Single multicast source (rhel2) connected to gi4/6; Second host (rhel1) connected to gi4/26 not joined to any multicast group; Clear the counters on the ports before the source starts Aug 30, 2013 · Following configurations help to solve: configure "ip igmp snooping querier address x. Jun 18, 2009 · Configure the source IP on a per-VLAN basis by issuing the set igmp querier address vlan ip_addr command. The two packets have different identifiers - so they're not the same packet bouncing around and hitting the same host twice either something is, as @RickyBeam says echoing the query, or the switch really is sending out two queries, which can only be a bug in the firmware. Mar 8, 2019 · How can we solve this error? %IGMP_QUERIER-4-QUERIER_MROUTER_DETECTED: An external IGMP querier or a multicast router has been detected in VLAN. multicast router) is using based on received queries. I 01/15/12 09:01:13 igmp: DEFAULT_VLAN: Other Querier detected I 01/15/12 09:01:13 igmp: DEFAULT_VLAN: This switch is no longer Querier In the above scenario, if the other device ceases to operate as a Querier on the default VLAN, the switch detects this change and can become the Querier as long as it is not pre-empted by some other IGMP that this command must be executed in a VLAN context. I suspect igmp snooping querier was configured on this switch though it is not required due to which igmp snooping query was coming from core 6509-E. 05-05-201712:58 PM - edited ‎03-08-201910:28 AM. When PIM is disabled and [no] igmp querier-wait-time is configured, the initial wait timer will be configured at desired value. Before FortiOS 7. VLANモードではなくVLAN configurationモードで設定変更することができます。. 0 source address, MLD queries are sent with IPv6 link-local address of the bridge interface. vlan-name —Name of a VLAN. capability IGMP Querier. Syntax: [no] vlan <vid> ip igmp querier. A VLAN name must be provided on switches that support ELS to enable IGMP snooping. (Optional) Enter detail to display the detailed IGMP querier information in a VLAN. ip igmp querier interval <INTERVAL-VALUE> no ip igmp querier interval. Use the ip igmp snooping immediate-leave command to enable immediate-leave for switch(config-vlan-config)# ip igmp snooping last-member-query-interval 3: Removes the group from the associated VLAN port if no hosts respond to an IGMP query message before the last member query interval expires. The DR is the device with the highest IP address on the subnet, whereas the IGMP querier is the device with the lowest IP address. ip igmp snooping vlan vlan-id querier address ip-address. So, in order to enable igmp snooping on vlan 8, I should use the following CLI commands: ip igmp snooping. # Enable the IGMP snooping feature. Use the show ip igmp snooping vlan command to display whether or not the switch supports IGMPv3 snooping. "ip igmp snooping querier". The first IP address available appears in the output of the. " Before I configured IGMP snooping, I used Wireshark to determine that multicast packets were being flooded to all ports on each switch, which was the reason for configuring IGMP snooping in the first place. Set instead a Querier IP address per VLAN under the Querier VLAN configuration (VLAN10=1. Configure an IP address on the VLAN interface. . With IGMP snooping enabled, the device monitors IGMP traffic on the network and uses The device hardware can distinguish IGMP information packets from other packets for the multicast group. A multicast router is not necessary as long as a switch is configured to support IGMP with the querier feature enabled. You can also see the multicast groups to which interfaces belong and other IGMP membership information. Now i have been observing the behavior. Mar 1, 2016 · I 01/15/01 09:01:13 igmp: DEFAULT_VLAN: Other Querier detected I 01/15/01 09:01:13 igmp: DEFAULT_VLAN: This switch is no longer Querier In the above scenario, if the other device ceases to operate as a Querier on the default VLAN, then the switch detects this change and can become the Querier as long as it is not pre-empted by some other IGMP May 5, 2017 · IGMP Snooping Queriers In Layer 2 Switches. Although the switch automatically ceases querier operation in an IGMP Note If disabled, then IGMP snooping on all VLANs is disabled, whether IGMP snooping is enabled on a VLAN or not. For more information on features that use this command, refer to the Multicast Guide for your switch model. This functionality will allow an interface to join in the querier-election process. Sh= ows a bridge port and source IP address from the detected IGMP querier. mld-querier (none | interface & IPv6 address) Sh= ows a bridge port and source Oct 13, 2011 · " The Sx300 can be configured to be an IGMP Querier as a backup querier, or in. 10. In the above scenario, if the other device ceases to operate as a querier on the default VLAN, then the switch detects this change and can become the querier as long as it is not preempted by some other IGMP Observe these guidelines when configuring the IGMP snooping querier: Configure the VLAN in global configuration mode. # Create VLAN 100, and assign GigabitEthernet 1/0/1 through GigabitEthernet 1/0/3 to the VLAN. x) is received in VLAN X on port PoX. (c) To mitigate, ensure there is a valid querier in the L2 domain. ip igmp querier. Feb 13, 2014 · These two hosts are the only devices in the VLAN and I've shut the SVI so I've no IGMP querier. 12. This option is available only on EX Series switches that do not support the ELS configuration style. 3 - IGMP Querier Election. x for Catalyst 6500 series switches, there was no way to configure the source IP address on a per-VLAN basis. Apr 14, 2011 · IGMP_QUERIER-4-QUERIER_MROUTER_DETECTED. Enter VLAN view. To configure an IGMP querier: Navigate to Switch > Configure > Routing and DHCP. x". All switches have IGMP snooping enabled. Observe these guidelines when configuring the IGMP snooping querier: Configure the VLAN in global configuration mode. Every access switch has the VLANs it participates in added to the "Querier VLAN Configuration" table BUT ONLY one of them is enabled. The bridge will not send queries if an external IGMP/MLD querier is detected (see the monitoring values igmp-querier and mld-querier). If there is no IP address configured on the VLAN interface, the IGMP snooping querier tries Oct 13, 2011 · " The Sx300 can be configured to be an IGMP Querier as a backup querier, or in. Under multicast support To enable the IGMP querier on specific VLANs, use the ip igmp snooping vlan querier Global Configuration mode command. I have setup one of the gigabit ports on each switch to be a trunk port and the two switches and communicating successfully. Oct 7, 2015 · When monitoring with Wireshark, I actually see two IGMP general queries from the IGMP querier address. The switch performs this function if there is no other device in the VLAN, such as a multicast router, to act as querier. The 3560 has no active ports except for the trunks, I'm suspecting a loop as I have also seen spanning tree new root snmp traps Apr 20, 2016 · 原因. Parameters <RESPONSE-TIME> Specifies the IGMP querier max response time value on the interface. The output of the following show running-config command shows an example of an IGMP configuration with IGMP snooping. Example: Jul 13, 2010 · the command is deleted from the config but IGMP snooping querier is still active on ALL Vlans; of you want to disable IGMP snoopin querier; you have to disable IGMP snooping and then enable it again if you want to keep L2 multicast forwarding logic. no ip igmp querier. IGMP is enabled on the interface. Switch(config)# no vlan 1 ip igmp querier Using the switch as querier. After receiving an IGMP report from a host, the snooping switch forwards the report through all the router ports in the VLAN. IGMP. If I look at my IPTV clients, I see 300Mbps of multicast going to these ports, even if these Jun 2, 2008 · No, I wouldn't think you need to enable routing and multicast routing, but as to usage of a loopback as the querier address, the documentation is a bit unclear whether the loopback might be considered the global address in "If there is no IP address configured on the VLAN interface, the IGMP snooping querier tries to use the configured global IP address for the IGMP querier. If a port spanning-tree, a port group, or a VLAN ID change occurs, the IGMP snooping-learned multicast groups from this port on the VLAN are deleted. Leave the global address at 0. or. new("Address Counter") -- This will contain a hash of counters of appearances of a certain address. 設定情報は下記で確認可能です。. The function of the IGMP Querier is to poll other IGMP-enabled devices in an IGMP-enabled VLAN to elicit group membership information. com IgmpSnooping: %IGMPSNOOPING-6-NO_IGMP_QUERIER: No IGMP querier detected in VLAN XXX. The value range is between 60 to 600 seconds. When enabled, the IGMP snooping querier uses the IP address as the query source address. Syntax: show ip igmp config. Note IGMPv3 is interoperable with older versions of IGMP. The switch hardware can distinguish IGMP information packets from other packets for the multicast group. Feb 10, 2011 · If global snooping is enabled, you can enable or disable VLAN snooping. If multiple VLANs are configured, you can configure IGMP on a per-VLAN basis. Procedure. config-if-vlan. Jan 28, 2022 · The core runs multiple VRFs for different tenants/BU/Zones plus many vlans that are isolated for specific purposes and segmented by firewalls. ip igmp snooping query-interval. g. 252, version: 3, i/f Eth1/2 Querier interval: 125 secs Querier last member query interval: 25 secs Querier robustness: 2 Switch-querier enabled, address 10. 253, currently not running Compared to PIM-based solutions, IGMP proxy does not support more than one upstream interface and routing loops are not detected or avoided. to determine this). 根据网络需要，可以调整查询器的以下参数：. x. 查询器发送特定组查询 Feb 2, 2021 · All IPTV nodes are in a separate VLAN100. Jun 25, 2015 · There's no mrouter defined, but according to the CLI guide, by default "Learning pim-dvmrp is enabled. Since the IGMP querier needs a source IP, it used the source IP address as 0. switch# show running-config Current configuration: ! ! ! ! ! access-list ip mygroup 10 permit any any 239. Authority I 01/15/12 09:01:13 igmp: DEFAULT_VLAN: Other Querier detected I 01/15/12 09:01:13 igmp: DEFAULT_VLAN: This switch is no longer Querier In the above scenario, if the other device ceases to operate as a Querier on the default VLAN, the switch detects this change and can become the Querier as long as it is not pre-empted by some other IGMP Multimedia Traffic Control with IP Multicast (IGMP) > Configuring and displaying IGMP (CLI) next. At this point there is no need to L3 Multicast routing so it all lives in L2. ip igmp snooping vlan 8. Enable multicast router mode on the ports that uplinks to the other switches. On MS120-24P is an IGMP Querier configured. new(); ip igmp querier interval. To enable IGMP snooping querier: 1. The show ip igmp config command lists the IGMP configuration for all VLANs configured on the switch or for a specific VLAN. (Optional) Enter vlan vlan-id to display information for a single VLAN The ip igmp snooping querier last-member-query- int erval command specifies the global last-member-query- int erval used in snooping query packets transmitted from the switch. You can configure an IGMP snooping querier to support IGMP snooping in subnets without multicast interfaces because the multicast traffic does not need to be routed. Authority Jan 15, 2001 · I 01/15/01 09:01:13 igmp: DEFAULT_VLAN: Other Querier detected . Apr 24, 2011 · When there is no multicast router in the VLAN to originate the queries, you must configure an IGMP snooping querier to send membership queries. Enable IGMP snooping querier. ip igmp snooping vlan VLAN-LIST querier no ip igmp snooping vlan VLAN-LIST querier. If there is no SVI IP address, the device uses the first available IP address configured on the device . Jul 2, 2022 · IGMP Snooping information for vlan 10 IGMP snooping enabled Lookup mode: IP Optimised Multicast Flood (OMF) enabled IGMP querier present, address: 10. IGMP max query response time 10 seconds Description: Specify querier/non-querier capability for the VLAN. I have two layer two switches, lets call the switch X and switch Y. Each subnet must have at least one IGMP. IGMP querier is available as of firmware version MS 9. Feb 17, 2022 · Bridge Querier Helper. This command sets the time interval at which the IGMP snooping queries are sent by the Switch when configured as querier on a VLAN. Using the switch as querier. The default is 1 second. I see the following messages on all vlans on a Cat45k the port g1/20 is attached to a 3560 which has 2 x trunks to the 45k. IGMP querier timeout is 255 seconds. When a multicast-enabled router first becomes active on a subnet, it assumes that it is the Querier — the router responsible for sending all General and Group-Specific Queries to the subnet - and immediately sends a General Query. enabled, the device cannot become Querier for the subnet. I prefer the SVI because here I can see more information’s with the sh ip igmp command. config-lag-if. The IGMP snooping querier does not This example uses the following software and hardware components: One EX4300 Series switch. 可以通过 igmp-snooping query-interval 命令配置。. pu io he lw yd wl cz ja ep sz