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VSC7440 датащи(PDF) 152 Page - Microsemi Corporation

номер детали VSC7440
подробное описание детали  L2/L3 Enterprise Gigabit Ethernet Switch with 10 Gbps Links
PDF  444 Pages
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производитель  MICROSEMI [Microsemi Corporation]
домашняя страница  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

VSC7440 датащи(HTML) 152 Page - Microsemi Corporation

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Functional Descriptions
VMDS-10492 VSC7440 Datasheet Revision 4.2
135
req.l3_sip_match = 1;
if (req.ip4_avail) {
csr.secur_ip4_sip_match_sticky = 1;
} else {
csr.secur_ip6_sip_match_sticky = 1;
}
}
if (req.l3_sip_match == 0) {
csr.secur_sip_fail_sticky = 1;
}
The IP Destination Guard check works in the same way as the SIP check, except for the following:
•
DIP check is not performed if frame has a multicast DMAC.
•
DIP check is not performed if router leg has been matched.
The following pseudo code specifies the behavior of the IP Destination Guard checks.
// Determine value of req.l3_sip_match (available in ANA_ACL as
L3_SMAC_SIP_MATCH)
if (!req.ip4_avail && !req.ip6_avail) {
req.l3_sip_match = 1;
return;
}
if (csr.sip_cmp_ena(req.port_num)) {
req.l3_sip_match = 0;
} else {
req.l3_sip_match = 1;
}
if (!LpmHit()) {
return;
}
if (req.ip4_avail) {
csr.secur_ip4_lpm_found_sticky = 1;
}
if (req.ip6_avail) {
csr.secur_ip6_lpm_found_sticky = 1;
}
sip_arp_entry = csr.arp_tbl[sip_lpm_entry.arp_ptr];
if ((sip_arp_entry.secur_match_vmid_ena == 0 ||
igr_vlan_entry.vmid == sip_arp_entry.arp_vmid)
&&
(sip_arp_entry.secur_match_mac_ena == 0 ||
req.smac == sip_arp_entry.mac)) {
req.l3_sip_match = 1;
if (req.ip4_avail) {
csr.secur_ip4_sip_match_sticky = 1;
} else {
csr.secur_ip6_sip_match_sticky = 1;
}
}



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