Re: avoid multicast storming on catalyst fe [7:71820]
s vermill wrote: > When I went to the Software Advisor on CCO, IGMP Snooping didn't show up as > a supported option for the 3550. Did your sales team lead you astray? I'd > take them to task if they did... The 3550 does support IGMP snooping, since 12.1(4)EA1. See http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12113ea1/3550cr/cli1.htm#1861998 and http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/12113ea1/3550scg/swigmp.htm Regards, Marco. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71990&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: avoid multicast storming on catalyst fe [7:71820]
TP wrote: > > Thank you at all for your support. > Just few comments (sorry for delay but when you are working I'm > sleeping ;)). > > - I can not configure the 3550 as router. I can not change IP > and subnet for > many reasons. > - I can not configure VLAN, I've no chance to configure here > inter vlan > routing > - I've bought 3550 because of IGMP snooping...but It seems that > it does not > work Teresa, When I went to the Software Advisor on CCO, IGMP Snooping didn't show up as a supported option for the 3550. Did your sales team lead you astray? I'd take them to task if they did... > > Maybe access-list or something based on mac control can help > us to avoid that > our tests based on multicast traffic floods on all the LAN. > > I can configure the multicast address (so I can know the > multicast layer 2 > mac). > Wich is the configuration (if any) I've to set on fastethernet > 0/1 in order to > avoid that the specific multicast mac go out from this port? > > Anybody knows why switchport block multicast doesn't take any > effect? Sounds as if your hardware is new. Can you open a TAC case? > > > Thank you again and have a nice week end. > Teresa > > > > - Original Message ----- > From: Priscilla Oppenheimer > To: [EMAIL PROTECTED] > Sent: Friday, July 04, 2003 5:35 AM > Subject: RE: avoid multicast storming on catalyst fe [7:71820] > > > Couldn't you use a VLAN? Maybe that's too much work since > you're just > testing though But VLANs divide broadcast/multicast > domains... > > Priscilla > > TP wrote: > > > > Dear Group, > > > > I need help about multiscast. > > This is a simple topology... I've to test some video > streamer > > devices so I > > must generate multicast traffic. > > All video devices are connected to a catalyst 3550xl. > > We can reach the office LAN through the same catalyst, in > > particular from/by > > fastethernet0/1. > > > > I must avoid that multicast traffic genereted locally > floods > > the LAN creating > > excessive traffic. > > Can I achieve this? > > > > This is the configuration runnig...it doesn't work. I mean > > when I generate > > multicast traffic it crosses fe0/1 and reachs the rest of > the > > LAN > > degrading network performance. > > > > Any help will be appreciated. > > Thank you. > > Teresa > > > > > > interface FastEthernet0/1 > > switchport protected > > switchport block multicast > > no ip address > > storm-control multicast level 20.00 > > > > System image file is > > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > > 1.bin" > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71987&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: avoid multicast storming on catalyst fe [7:71820]
Thank you at all for your support. Just few comments (sorry for delay but when you are working I'm sleeping ;)). - I can not configure the 3550 as router. I can not change IP and subnet for many reasons. - I can not configure VLAN, I've no chance to configure here inter vlan routing - I've bought 3550 because of IGMP snooping...but It seems that it does not work Maybe access-list or something based on mac control can help us to avoid that our tests based on multicast traffic floods on all the LAN. I can configure the multicast address (so I can know the multicast layer 2 mac). Wich is the configuration (if any) I've to set on fastethernet 0/1 in order to avoid that the specific multicast mac go out from this port? Anybody knows why switchport block multicast doesn't take any effect? Thank you again and have a nice week end. Teresa - Original Message - From: Priscilla Oppenheimer To: [EMAIL PROTECTED] Sent: Friday, July 04, 2003 5:35 AM Subject: RE: avoid multicast storming on catalyst fe [7:71820] Couldn't you use a VLAN? Maybe that's too much work since you're just testing though But VLANs divide broadcast/multicast domains... Priscilla TP wrote: > > Dear Group, > > I need help about multiscast. > This is a simple topology... I've to test some video streamer > devices so I > must generate multicast traffic. > All video devices are connected to a catalyst 3550xl. > We can reach the office LAN through the same catalyst, in > particular from/by > fastethernet0/1. > > I must avoid that multicast traffic genereted locally floods > the LAN creating > excessive traffic. > Can I achieve this? > > This is the configuration runnig...it doesn't work. I mean > when I generate > multicast traffic it crosses fe0/1 and reachs the rest of the > LAN > degrading network performance. > > Any help will be appreciated. > Thank you. > Teresa > > > interface FastEthernet0/1 > switchport protected > switchport block multicast > no ip address > storm-control multicast level 20.00 > > System image file is > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > 1.bin" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71884&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: avoid multicast storming on catalyst fe [7:71820]
""Zsombor Papp"" wrote in message news:[EMAIL PROTECTED] > At 09:12 PM 7/3/2003 +, Rajesh Kumar wrote: > >How about configuring a "storm control" for multicast which will avoid these > >problems? > > I think she tried it (see config at the end) and it didn't work. I also > think btw that storm control is an inbound feature so it's probably not > what's needed here. > > I briefly looked at the documentation and my impression is that 'switchport > block multicast' is the command that would solve exactly this problem (ie. > preventing mcast packets to be sent). However she seems to have tried that, > too, so I am not sure what to say. > > If nothing else helps, then configuring the 3550 as a router might be an > option. But I am really curious why blocking didn't do the trick. who knows what bugs may lie hidden in the IOS? ;-> if all else fails, why not block the source address via an access-list? or throw some rtate-limiting into the mix? guess I should break outr my docs atnd ponder a while as well. > > Thanks, > > Zsombor > > > >-rajesh > > > > > >TP wrote: > > > > > Dear Group, > > > > > > I need help about multiscast. > > > This is a simple topology... I've to test some video streamer devices so > I > > > must generate multicast traffic. > > > All video devices are connected to a catalyst 3550xl. > > > We can reach the office LAN through the same catalyst, in particular > >from/by > > > fastethernet0/1. > > > > > > I must avoid that multicast traffic genereted locally floods the LAN > > > creating > > > excessive traffic. > > > Can I achieve this? > > > > > > This is the configuration runnig...it doesn't work. I mean when I > generate > > > multicast traffic it crosses fe0/1 and reachs the rest of the LAN > > > degrading network performance. > > > > > > Any help will be appreciated. > > > Thank you. > > > Teresa > > > > > > interface FastEthernet0/1 > > > switchport protected > > > switchport block multicast > > > no ip address > > > storm-control multicast level 20.00 > > > > > > System image file is > > > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > > > 1.bin" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71880&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: avoid multicast storming on catalyst fe [7:71820]
Couldn't you use a VLAN? Maybe that's too much work since you're just testing though But VLANs divide broadcast/multicast domains... Priscilla TP wrote: > > Dear Group, > > I need help about multiscast. > This is a simple topology... I've to test some video streamer > devices so I > must generate multicast traffic. > All video devices are connected to a catalyst 3550xl. > We can reach the office LAN through the same catalyst, in > particular from/by > fastethernet0/1. > > I must avoid that multicast traffic genereted locally floods > the LAN creating > excessive traffic. > Can I achieve this? > > This is the configuration runnig...it doesn't work. I mean > when I generate > multicast traffic it crosses fe0/1 and reachs the rest of the > LAN > degrading network performance. > > Any help will be appreciated. > Thank you. > Teresa > > > interface FastEthernet0/1 > switchport protected > switchport block multicast > no ip address > storm-control multicast level 20.00 > > System image file is > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > 1.bin" > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71877&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: avoid multicast storming on catalyst fe [7:71820]
At 09:12 PM 7/3/2003 +, Rajesh Kumar wrote: >How about configuring a "storm control" for multicast which will avoid these >problems? I think she tried it (see config at the end) and it didn't work. I also think btw that storm control is an inbound feature so it's probably not what's needed here. I briefly looked at the documentation and my impression is that 'switchport block multicast' is the command that would solve exactly this problem (ie. preventing mcast packets to be sent). However she seems to have tried that, too, so I am not sure what to say. If nothing else helps, then configuring the 3550 as a router might be an option. But I am really curious why blocking didn't do the trick. Thanks, Zsombor >-rajesh > > >TP wrote: > > > Dear Group, > > > > I need help about multiscast. > > This is a simple topology... I've to test some video streamer devices so I > > must generate multicast traffic. > > All video devices are connected to a catalyst 3550xl. > > We can reach the office LAN through the same catalyst, in particular >from/by > > fastethernet0/1. > > > > I must avoid that multicast traffic genereted locally floods the LAN > > creating > > excessive traffic. > > Can I achieve this? > > > > This is the configuration runnig...it doesn't work. I mean when I generate > > multicast traffic it crosses fe0/1 and reachs the rest of the LAN > > degrading network performance. > > > > Any help will be appreciated. > > Thank you. > > Teresa > > > > interface FastEthernet0/1 > > switchport protected > > switchport block multicast > > no ip address > > storm-control multicast level 20.00 > > > > System image file is > > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > > 1.bin" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71867&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: avoid multicast storming on catalyst fe [7:71820]
How about configuring a "storm control" for multicast which will avoid these problems? -rajesh TP wrote: > Dear Group, > > I need help about multiscast. > This is a simple topology... I've to test some video streamer devices so I > must generate multicast traffic. > All video devices are connected to a catalyst 3550xl. > We can reach the office LAN through the same catalyst, in particular from/by > fastethernet0/1. > > I must avoid that multicast traffic genereted locally floods the LAN > creating > excessive traffic. > Can I achieve this? > > This is the configuration runnig...it doesn't work. I mean when I generate > multicast traffic it crosses fe0/1 and reachs the rest of the LAN > degrading network performance. > > Any help will be appreciated. > Thank you. > Teresa > > interface FastEthernet0/1 > switchport protected > switchport block multicast > no ip address > storm-control multicast level 20.00 > > System image file is > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > 1.bin" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71860&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: avoid multicast storming on catalyst fe [7:71820]
Rajesh Kumar wrote: > > How about configuring a "storm control" for multicast which > will avoid these problems? > > -rajesh > I think what's happening isn't a storm at all. Flooding of multicast is the default behavior. > > TP wrote: > > > Dear Group, > > > > I need help about multiscast. > > This is a simple topology... I've to test some video streamer > devices so I > > must generate multicast traffic. > > All video devices are connected to a catalyst 3550xl. > > We can reach the office LAN through the same catalyst, in > particular from/by > > fastethernet0/1. > > > > I must avoid that multicast traffic genereted locally floods > the LAN > > creating > > excessive traffic. > > Can I achieve this? > > > > This is the configuration runnig...it doesn't work. I mean > when I generate > > multicast traffic it crosses fe0/1 and reachs the rest of > the LAN > > degrading network performance. > > > > Any help will be appreciated. > > Thank you. > > Teresa > > > > interface FastEthernet0/1 > > switchport protected > > switchport block multicast > > no ip address > > storm-control multicast level 20.00 > > > > System image file is > > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > > 1.bin" > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71864&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: avoid multicast storming on catalyst fe [7:71820]
TP wrote: > > Dear Group, > > I need help about multiscast. > This is a simple topology... I've to test some video streamer > devices so I > must generate multicast traffic. > All video devices are connected to a catalyst 3550xl. > We can reach the office LAN through the same catalyst, in > particular from/by > fastethernet0/1. > > I must avoid that multicast traffic genereted locally floods > the LAN creating > excessive traffic. > Can I achieve this? "IGMP Snooping" or "Multicast Multilayer Switching" (MMLS) would probably do the trick but a quick look in the Software Advisor http://www.cisco.com/cgi-bin/Support/CompNav/Index.pl?Introduction=True doesn't bode well for you. It doesn't look as if the 3550 supports either feature. You may require a higher end switch. I've implemented IGMP Snooping in 6509s, but nothing smaller. Without one of these features, which allow the switch to know who's interested, the default is to flood multicast. Maybe there is a L2 access list option or something? Regards, Scott > > This is the configuration runnig...it doesn't work. I mean > when I generate > multicast traffic it crosses fe0/1 and reachs the rest of the > LAN > degrading network performance. > > Any help will be appreciated. > Thank you. > Teresa > > > interface FastEthernet0/1 > switchport protected > switchport block multicast > no ip address > storm-control multicast level 20.00 > > System image file is > "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA > 1.bin" > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71849&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
avoid multicast storming on catalyst fe [7:71820]
Dear Group, I need help about multiscast. This is a simple topology... I've to test some video streamer devices so I must generate multicast traffic. All video devices are connected to a catalyst 3550xl. We can reach the office LAN through the same catalyst, in particular from/by fastethernet0/1. I must avoid that multicast traffic genereted locally floods the LAN creating excessive traffic. Can I achieve this? This is the configuration runnig...it doesn't work. I mean when I generate multicast traffic it crosses fe0/1 and reachs the rest of the LAN degrading network performance. Any help will be appreciated. Thank you. Teresa interface FastEthernet0/1 switchport protected switchport block multicast no ip address storm-control multicast level 20.00 System image file is "flash:c3550-i9q3l2-mz.121-11.EA1/c3550-i9q3l2-mz.121-11.EA 1.bin" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71820&t=71820 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
