I am just working on it. IEEE STP uses 803.2 with 802.2 where SSAP and DSAP value is of 0x42. Thus LSAP will be 0x4242
PVST+ uses 802.3 with SNAP of and hence LSAP will be always 0xAAAA. The SNAP ethertype is 0x010B. With regards Kings On Tue, Jun 7, 2011 at 10:11 PM, Bruno <[email protected]> wrote: > Better answer, I do not remember. > What I remember is I matched them by 0xaaaa > > > On Tue, Jun 7, 2011 at 1:39 PM, Bruno <[email protected]> wrote: > >> I think snap/dnap 0xaaaa could be the answer >> >> >> On Tue, Jun 7, 2011 at 1:21 PM, Kingsley Charles < >> [email protected]> wrote: >> >>> Does STP and PVST use EtherType? They use SNAP isn't it? >>> >>> >>> With regards >>> Kings >>> >>> >>> On Tue, Jun 7, 2011 at 7:40 PM, Bruno <[email protected]> wrote: >>> >>>> Hey King, >>>> >>>> STP and PVST should be matched on lsa type 0xaaaa I am not mistaken >>>> Ethertype should be 0x10b I think. >>>> >>>> On Tue, Jun 7, 2011 at 8:57 AM, Kingsley Charles < >>>> [email protected]> wrote: >>>> >>>>> Hi all >>>>> >>>>> I am using VACLs to block ARP in vlan X using the following command. >>>>> This is going to block all non-ip traffic including the STP BPDUs. What is >>>>> needed to permit the STP BPDUs to prevent looping? >>>>> >>>>> mac access-list extended king >>>>> permit any any 0x0806 >>>>> >>>>> vlan access-map king >>>>> match mac address >>>>> action drop >>>>> >>>>> vlan filter king vlan-list 123 >>>>> >>>>> >>>>> >>>>> >>>>> With regards >>>>> Kings >>>>> >>>>> _______________________________________________ >>>>> For more information regarding industry leading CCIE Lab training, >>>>> please visit www.ipexpert.com >>>>> >>>>> Are you a CCNP or CCIE and looking for a job? Check out >>>>> www.PlatinumPlacement.com >>>>> >>>> >>>> >>>> >>>> -- >>>> Bruno Fagioli (by Jaunty Jackalope) >>>> Cisco Security Professional >>>> >>> >>> >> >> >> -- >> Bruno Fagioli (by Jaunty Jackalope) >> Cisco Security Professional >> > > > > -- > Bruno Fagioli (by Jaunty Jackalope) > Cisco Security Professional >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
