網絡卡組播組
阿新 • • 發佈：2020-07-27
root@focal2-2:~# netstat -gan IPv6/IPv4 Group Memberships Interface RefCnt Group --------------- ------ --------------------- lo 1 224.0.0.1 ens3 1 224.0.0.5 ens3 1 224.0.0.1 lo 1 ff02::1 lo 1 ff01::1 ens31 ff02::1:ff96:d442 ens3 2 ff02::1 ens3 1 ff01::1 root@focal2-2:~#
root@focal2-2:~# ifconfig -a | grep multicast root@focal2-2:~# cat /boot/config-5.4.0-42-generic | grep CONFIG_IP_MULTICAST CONFIG_IP_MULTICAST=y root@focal2-2:~#
root@focal2-2:~# cat /boot/config-5.4.0-42-generic | egrep 'CONFIG_IP_MULTICAST|CONFIG_NET_IPIP|CONFIG_IP_MROUTE' CONFIG_IP_MULTICAST=y CONFIG_NET_IPIP=m CONFIG_IP_MROUTE_COMMON=y CONFIG_IP_MROUTE=y CONFIG_IP_MROUTE_MULTIPLE_TABLES=y
root@focal2-2:~# ip mroute root@focal2-2:~# more /proc/net/ip_mr_vif Interface BytesIn PktsIn BytesOut PktsOut Flags Local Remote root@focal2-2:~#
root@focal2-2:~# ip link set ens3 multicast on root@focal2-2:~# ifconfig -a | grep multicast root@focal2-2:~# ifconfig -a | grep multicast root@focal2-2:~# ip link set ens3 multicast on root@focal2-2:~# ip link show ens3 2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DEFAULT group default qlen 1000 link/ether fa:16:3e:96:d4:42 brd ff:ff:ff:ff:ff:ff root@focal2-2:~#
root@ubuntu:/home/ubuntu# ip link set enahisic2i3 multicast on root@ubuntu:/home/ubuntu# ip -d link show enahisic2i3 | grep multicast root@ubuntu:/home/ubuntu#
root@focal:/var/log/frr# tcpdump -i ens3 ip proto ospf -env tcpdump: listening on ens3, link-type EN10MB (Ethernet), capture size 262144 bytes 20:07:55.365256 fa:16:3e:07:4f:e6 > 01:00:5e:00:00:05, ethertype IPv4 (0x0800), length 78: (tos 0xc0, ttl 1, id 43803, offset 0, flags [none], proto OSPF (89), length 64) 10.10.18.148 > 224.0.0.5: OSPFv2, Hello, length 44 Router-ID 10.10.18.148, Backbone Area, Authentication Type: none (0) Options [External] Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.0, Priority 1 20:08:05.365555 fa:16:3e:07:4f:e6 > 01:00:5e:00:00:05, ethertype IPv4 (0x0800), length 78: (tos 0xc0, ttl 1, id 43804, offset 0, flags [none], proto OSPF (89), length 64) 10.10.18.148 > 224.0.0.5: OSPFv2, Hello, length 44 Router-ID 10.10.18.148, Backbone Area, Authentication Type: none (0) Options [External] Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.0, Priority 1 20:08:15.365867 fa:16:3e:07:4f:e6 > 01:00:5e:00:00:05, ethertype IPv4 (0x0800), length 78: (tos 0xc0, ttl 1, id 43805, offset 0, flags [none], proto OSPF (89), length 64) 10.10.18.148 > 224.0.0.5: OSPFv2, Hello, length 44 Router-ID 10.10.18.148, Backbone Area, Authentication Type: none (0) Options [External] Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.0, Priority 1 ^C 3 packets captured 3 packets received by filter 0 packets dropped by kernel root@focal:/var/log/frr#