09-11-2011 04:28 PM - edited 03-03-2019 06:22 AM
Hello fourm,
Question on how to disable IGMP on a router interface - in this case Gig 0/2 on an ISR G2.
Rotuer is an ISR G2 running 15.2(1)T code and I want to disable all multicast processing on the interface.
Here is what I see:
c2911-rtr#show ip igmp interface gigabitEthernet 0/2
GigabitEthernet0/2 is up, line protocol is up
Internet address is 99.165.56.16/22
IGMP is enabled on interface
Current IGMP host version is 2
Current IGMP router version is 2
IGMP query interval is 60 seconds
IGMP configured query interval is 60 seconds
IGMP querier timeout is 120 seconds
IGMP configured querier timeout is 120 seconds
IGMP max query response time is 10 seconds
Last member query count is 2
Last member query response interval is 1000 ms
Inbound IGMP access group is not set
IGMP activity: 1 joins, 0 leaves
Multicast routing is disabled on interface
Multicast TTL threshold is 0
Multicast groups joined by this system (number of users):
224.0.1.41(1)
c2911-rtr#
c2911-rtr#show ip interface gigabitEthernet 0/2
GigabitEthernet0/2 is up, line protocol is up
Internet address is 91.165.56.16/22
Broadcast address is 255.255.255.255
Address determined by DHCP
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Multicast reserved groups joined: 224.0.0.1 224.0.0.2 224.0.0.22
Outgoing access list is not set
Inbound access list is 105
Proxy ARP is disabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are never sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is enabled
IP Flow switching is disabled
IP CEF switching is enabled
IP CEF switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast, CEF
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Policy routing is disabled
Network address translation is enabled, interface in domain outside
BGP Policy Mapping is disabled
Input features: Common Flow Table, Stateful Inspection, Virtual Fragment Reassembly, Access List, Virtual Fragment Reassembly After IPSec Decryption, NAT Outside, MCI Check
Output features: Post-routing NAT Outside, Common Flow Table, Stateful Inspection, NAT ALG proxy
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
c2911-rtr#
Multicast is disabled:
c2911-rtr#show ip multicast
Multicast Routing: disabled
Multicast Multipath: disabled
Multicast Route limit: No limit
Multicast Fallback group mode: Dense
Number of multicast boundaries configured with filter-autorp option: 0
c2911-rtr#
c2911-rtr#show ip igmp snooping
Global IGMP Snooping configuration:
-----------------------------------
IGMP snooping : Disabled
IGMPv3 snooping : Disabled
Report suppression : Disabled
TCN solicit query : Disabled
Last Member Query Interval : 1000
.
.
.
.
c2911-rtr#show ip igmp membership
Flags: A - aggregate, T - tracked
L - Local, S - static, V - virtual, R - Reported through v3
I - v3lite, U - Urd, M - SSM (S,G) channel
1,2,3 - The version of IGMP, the group is in
Channel/Group-Flags:
/ - Filtering entry (Exclude mode (S,G), Include mode (G))
Reporter:
<mac-or-ip-address> - last reporter if group is not explicitly tracked
<n>/<m> - <n> reporter in include mode, <m> reporter in exclude
Channel/Group Reporter Uptime Exp. Flags Interface
*,239.192.152.143 192.168.1.97 03:42:36 02:15 2A BV1
*,239.255.255.253 192.168.1.239 6d00h 02:20 2A BV1
*,239.255.255.250 192.168.1.201 6d00h 02:24 2A BV1
*,235.0.0.1 192.168.1.4 6d00h 02:17 2A BV1
*,224.0.1.40 192.168.1.254 6d00h 02:16 2LA IS0/0
*,224.0.1.41 192.168.1.254 6d00h 02:16 2LA SM1/0
*,224.0.1.41 99.165.56.16 6d00h stop 2LA Gi0/2
*,224.0.1.41 192.168.1.254 6d00h 02:19 2LA IS0/0
*,224.0.1.41 0.0.0.0 6d00h never 2LA Em0/0
c2911-rtr#
c2911-rtr#
Here is how I have the interface configued:
!
interface GigabitEthernet0/2
ip address dhcp client-id GigabitEthernet0/2 hostname c2911-rtr
ip access-group 105 in
no ip redirects
no ip proxy-arp
ip nbar protocol-discovery
no ip mfib forwarding input
no ip mfib forwarding output
ip nat outside
ip virtual-reassembly in
ip route-cache same-interface
load-interval 30
duplex auto
speed auto
no cdp enable
no mop enabled
!
any ideas?
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