Did you try ip mroute? RES-RTR6(config)#ip mroute 224.0.0.0 255.255.0.0 Null0 RES-RTR6(config)#no ip mroute 224.0.0.0 255.255.0.0 Null0 RES-RTR6(config)#^Z RES-RTR6# Feb 1 17:53:56 EST: %SYS-5-CONFIG_I: Configured from console by chris on consol e RES-RTR6# RES-RTR6#conf t Enter configuration commands, one per line. End with CNTL/Z. RES-RTR6(config)#no ip multicast-rou RES-RTR6(config)#ip mroute ? A.B.C.D Source address RES-RTR6(config)#ip mroute 224.0.0.0 224.0.0.0 null 0 RES-RTR6(config)#ip multicast-rou RES-RTR6(config)#no ip mroute 224.0.0.0 224.0.0.0 null0 RES-RTR6(config)#^Z RES-RTR6#
-----Original Message----- From: James Rishaw [mailto:jamie@dilbert.ais.net] Sent: Monday, February 01, 1999 2:07 PM To: nanog@merit.edu Subject: Cisco >224.0/3 problems..
Hello all,
Ran into a problem, thought maybe someone else has run into this and knows of a "fix", if this is intentional or what not.
It seems that Cisco IOS has a problem dealing with addresses above 224.0.0.0/3.
This came up in an e-mail with Paul Vixie about MAPS RBL, where I asked him why 224+ wasn't filtered. The reply was: IOS ignores it. GateD likes it, IOS doesn't.
I'm finding that IOS isn't propagating routes, etc., (nor will it even seem to *recognize*) address space above 224.
To wit:
As a /3: bordercore1.chi(config)#ip route 224.0.0.0 224.0.0.0 Null0 %Invalid destination prefix
/8, close to the end of address space: bordercore1.chi(config)#ip route 252.0.0.0 255.0.0.0 null0 %Invalid destination prefix
As a /24: bordercore1.chi(config)#ip route 225.0.0.0 255.255.255.0 Null0 %Invalid destination prefix
bordercore1.chi(config)#ip route 230.0.0.0 255.255.255.0 Null0 %Invalid destination prefix
It's not Null0:
bordercore1.chi(config)#ip route 234.128.230.123 255.255.255.255 h9/0 %Invalid destination prefix
bordercore1.chi(config)#ip route 241.102.34.93 255.255.255.255 atm4/0 %Invalid destination prefix
I know this is all "multicast" space, but considering classless routing and CIDR, shouldn't this space be usable and able to be manipulated ?
-jamie -- jamie rishaw (efnet:gavroche) @ AIS / Exodus "I want peace on earth and goodwill towards men." "We are the United States Government. We don't do that sort of thing." --sneakers