From: ismail el-shalh (ishelh_mdsa@yahoo.com)
Date: Mon Jun 04 2007 - 14:13:04 ART
Hi Group,
The task is stating "Do not allow BB3 to intercept EIGRP updates coming from R1, R3 and R6"
Now I have two issues :
Issue No.1
- The solution is assuming that R6 and BB3 are connected to SW1 while they are not.
- Because BB3 is connected to SW3, I believe we could solve this task by only issuing the following command on SW3 :
no ip igmp snooping vlan 1363
mac-address-table static 0100.5e00.000a vlan 1363 interface FastEthernet0/20 FastEthernet0/21
by doing this we are telling SW3 (3550) to only forward the multicast address 224.0.0.10 toward port 0/20 and 0/21, hence BB3 will not receive any eigrp packets.
Issue No.2
SW1 in my lab is 3750, and the mac-address-table static did not work , for example if I want to only forward the multicast traffic 224.0.0.10 toward fas0/19 which is connected to SW4, and Fas0/1 which is connected to R1, the multicast packets are still forwarded to R3.
no ip igmp snooping vlan 1363
mac-address-table static 0100.5e00.000a vlan 1363 interface FastEthernet1/0/1 FastEthernet1/0/19
Reply to request 0 from 204.12.1.9, 12 ms
Reply to request 0 from 150.1.1.1, 20 ms
Reply to request 0 from 204.12.1.6, 16 ms
Reply to request 0 from 204.12.1.3, 12 ms <----- R3 is still receiving the multicast ?
what is so special about the 3750 in this case ?
Appreciating any input.
Ismail El-Shalh :)
MMR/MDSA
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