topic Re: Adding Multicast Address Route in Operating System - HP-UX

Adding Multicast Address Route

MikeL_4 — Thu, 07 Feb 2008 20:56:31 GMT

I've received a request to add a route for the Multicast address: 224.0.0.0/24, to be routed out LAN: 192.168.224.128 on our server..

Can anyone tell me the route add command I would need to use to accomplish this ?

Thanks

Re: Adding Multicast Address Route

Sandman! — Thu, 07 Feb 2008 22:19:14 GMT

What gateway will you be using for this address or are you going with the default gateway. Post the output of the routing table on this machine:

# netstat -rnv

~cheers

Re: Adding Multicast Address Route

Michael Steele_2 — Thu, 07 Feb 2008 23:33:25 GMT

route add (* server ip *) (* gateway ip *) netmask
Update the /etc/rc.config.d/netconf file

http://forums12.itrc.hp.com/service/forums/questionanswer.do?threadId=456308&admit=109447627+1202427047218+28353475

Re: Adding Multicast Address Route

MikeL_4 — Fri, 08 Feb 2008 01:21:13 GMT

=>netstat -rnv
Routing tables
Dest/Netmask Gateway Flags Refs Interface Pmtu
127.0.0.1/255.255.255.255 127.0.0.1 UH 0 lo0 4136
155.90.120.185/255.255.255.255 155.90.120.185 UH 0 lan2 4136
172.17.101.185/255.255.255.255 172.17.101.185 UH 0 lan4 4136
192.168.224.185/255.255.255.255 192.168.224.185 UH 0 lan5 4136
192.168.230.185/255.255.255.255 192.168.230.185 UH 0 lan0 4136
155.90.88.23/255.255.255.255 172.17.101.135 UGH 0 lan4 0
204.149.206.5/255.255.255.255 155.90.120.130 UGH 0 lan2 0
70.106.0.2/255.255.255.255 155.90.120.130 UGH 0 lan2 0
208.18.30.121/255.255.255.255 172.17.101.135 UGH 0 lan4 0
65.174.43.17/255.255.255.255 172.17.101.135 UGH 0 lan4 0
155.90.142.124/255.255.255.255 155.90.120.130 UGH 0 lan2 0
209.227.189.150/255.255.255.255 155.90.120.130 UGH 0 lan2 0
155.90.35.139/255.255.255.255 172.17.101.135 UGH 0 lan4 0
155.90.35.138/255.255.255.255 172.17.101.135 UGH 0 lan4 0
155.90.35.140/255.255.255.255 172.17.101.135 UGH 0 lan4 0
192.168.230.128/255.255.255.192 192.168.230.185 U 2 lan0 1500
155.90.120.128/255.255.255.192 155.90.120.185 U 2 lan2 1500
172.17.101.128/255.255.255.192 172.17.101.185 U 2 lan4 1500
192.168.224.128/255.255.255.192 192.168.224.185 U 2 lan5 1500
65.219.1.160/255.255.255.224 172.17.101.135 UG 0 lan4 0
155.90.51.0/255.255.255.0 172.17.101.135 UG 0 lan4 0
155.90.0.0/255.255.0.0 155.90.120.130 UG 0 lan2 0
10.162.64.0/255.255.255.0 172.17.101.135 UG 0 lan4 0
10.25.92.0/255.255.255.0 172.17.101.135 UG 0 lan4 0
10.25.94.0/255.255.255.0 172.17.101.135 UG 0 lan4 0
10.0.0.0/255.0.0.0 155.90.120.130 UG 0 lan2 0
144.226.0.0/255.255.0.0 172.17.101.135 UG 0 lan4 0
127.0.0.0/255.0.0.0 127.0.0.1 U 0 lo0 0
207.40.0.0/255.255.0.0 172.17.101.135 UG 0 lan4 0
208.10.0.0/255.255.0.0 172.17.101.135 UG 0 lan4 0
default/0.0.0.0 172.17.101.135 UG 0 lan4 0
=>

Re: Adding Multicast Address Route

MikeL_4 — Fri, 08 Feb 2008 01:24:16 GMT

I understand the format of the route add command, but what does the /24 mean on the end of the IP they gave: 224.0.0.0/24

Re: Adding Multicast Address Route

rick jones — Fri, 08 Feb 2008 01:39:25 GMT

The number after the '/' is the number of bits in the netmask, which in this case would then be 255.255.255.0. IIRC this is often called "CIDR" notation (Classless Inter-Domain Routing)