02-23-2009 05:16 PM - edited 03-06-2019 04:11 AM
Hi,
I need some assistance on the following : -
i) What is a SIP MAC Addreess within a switch/router ?
ii) how does a switch detects a spoofed mac address ?
iii) how do I check for the highest MAC address flow count inside a switch/router
Thank you,
Cheers,
- InternetB -
02-24-2009 12:30 AM
Hello InternetB,
i) not enough clear
however SIPs are modules that can be installed on C7600.
So check with sh module if there is a SIP module (they are the ones that support SPAs) installed
See the following example from a C7606 with a SIP
sh module
Mod Ports Card Type Model Serial No.
--- ----- -------------------------------------- ------------------ -----------
1 24 CEF720 24 port 1000mb SFP WS-X6724-SFP SAL1049A78R
2 48 CEF720 48 port 10/100/1000mb Ethernet WS-X6748-GE-TX SAL10436CED
3 0 4-subslot SPA Interface Processor-400 7600-SIP-400 JAB104802PV
6 2 Supervisor Engine 720 (Active) WS-SUP720-3BXL SAL10467RED
Mod MAC addresses Hw Fw Sw Status
--- ---------------------------------- ------ ------------ ------------ -------
1 0019.56f3.7794 to 0019.56f3.77ab 2.5 12.2(14r)S5 12.2(33)SRC Ok
2 0019.aa75.1138 to 0019.aa75.1167 2.5 12.2(14r)S5 12.2(33)SRC Ok
3 001a.6d7e.c800 to 001a.6d7e.c87f 2.3 12.2(33)SRC 12.2(33)SRC Ok
6 0017.9444.1140 to 0017.9444.1143 5.2 8.4(2) 12.2(33)SRC Ok
Mod Sub-Module Model Serial Hw Status
---- --------------------------- ------------------ ----------- ------- -------
1 Distributed Forwarding Card WS-F6700-DFC3BXL SAL1045772E 5.3 Ok
2 Distributed Forwarding Card WS-F6700-DFC3BXL SAL1046824X 5.3 Ok
3/0 1xOC48 POS/RPR SPA SPA-1XOC48POS/RPR JAB104002UT 2.2 Ok
6 Policy Feature Card 3 WS-F6K-PFC3BXL SAL10467S8K 1.8 Ok
6 MSFC3 Daughterboard WS-SUP720 SAL10467UYH 2.5 Ok
ii) it cannot it can just notify that a MAC address is flapping between two ports: this can be a sign of a loop or of a server with NIC teaming
iii) sh mac-address-table count
example:
sh mac-address-table count
MAC Entries for all vlans :
Dynamic Address Count: 83
Static Address (User-defined) Count: 299
Total MAC Addresses In Use: 382
Total MAC Addresses Available: 65536
this is from a 7606
Hope to help
Giuseppe
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