Skip Navigation Links
Exit Print View
| Sun Ethernet Fabric Operating System ### IGS Administration Guide

Search Scope:

- This Document
- Entire Library

## Configure Queriers in Flow-Based Configurations

You can configure an IGS switch to send IGMP queries when no IGMP routers are present in a VLAN. A switch must be configured as a querier for a VLAN only when there are no queriers or routers in the network. If you have questions about the topology used in this section, see Flow-Based Configuration Example. For the default settings, see Default Settings.

1. On DUT1, configure the multicast forwarding mode for IGS as MAC-based.

       SEFOS# configure terminal
       SEFOS(config)# snooping multicast-forwarding-mode mac

2. Disable GMRP.

       SEFOS(config)# set gmrp disable

3. Enable IGS.

       SEFOS(config)# ip igmp snooping

4. Configure `VLAN 2` in the switch.

       SEFOS(config)# vlan 2

5. Configure the static VLAN entry (`VLAN 2`) with the required ports.

       SEFOS(config-vlan)# ports extreme-ethernet 0/1-3

6. Configure `VLAN 2` as querier.

       SEFOS(config-vlan)# ip igmp snooping querier

7. Configure the query-interval time as 60 seconds.

       SEFOS(config-vlan)# ip igmp snooping query-interval 60
       SEFOS(config-vlan)# exit

8. Configure `VLAN 3` in the switch.

       SEFOS(config)# vlan 3

9. Configure the static VLAN entry (`VLAN 3`) with the required ports.

       SEFOS(config-vlan)# ports extreme-ethernet 0/4-5
       SEFOS(config-vlan)# exit

10. Review the IGS-related configurations.

        SEFOS# show ip igmp snooping globals

        Snooping Configuration
        -----------------------------
        IGMP Snooping globally enabled
        IGMP Snooping is operationally enabled
        IGMP Snooping Enhanced mode is disabled
        Transmit Query on Topology Change globally disabled
        Multicast forwarding mode is MAC based
        Proxy globally disabled
        Proxy reporting globally enabled
        Filter is disabled
        Router port purge interval is 125 seconds
        Port purge interval is 260 seconds
        Report forward interval is 5 seconds
        Group specific query interval is 2 seconds
        Reports are forwarded on router ports
        Group specific query retry count is 2
        Multicast VLAN disabled
        Leave config level is Vlan based

11. Review the IGS-related information in `VLAN 2`.

        SEFOS# show ip igmp snooping vlan 2

        Snooping VLAN Configuration for the VLAN 2
          IGMP Snooping enabled
          IGMP configured version is V3
          Fast leave is disabled
          Snooping switch is configured as Querier
          Snooping switch is acting as Querier
          Query interval is 60 seconds
          Port Purge Interval is 130 seconds
          Max Response Code is 100, Time is 10 seconds

12. Review the configuration information for `VLAN 2`.

        SEFOS# show vlan id 2

        Vlan database-------------Vlan ID                 : 2Member Ports            : Ex0/1, Ex0/2, Ex0/3Untagged Ports          : NoneForbidden Ports         : NoneName                    :Status                  : Permanent----------------------------------------------------

13. Review the configuration information for `VLAN 3`.

        SEFOS# show vlan id 3

        Vlan ID                 : 3Member Ports            : Ex0/4, Ex0/5Untagged Ports          : NoneForbidden Ports         : NoneName                    :Status                  : Permanent----------------------------------------------------

    Because `VLAN 2` is configured as a querier, the switch sends a general query every 60 seconds on the member ports of `VLAN 2`.

Copyright © 2010, 2012, Oracle and/or its affiliates. All rights reserved. Legal Notices |