From: haducbinh (haducbinh@vnpro.org)
Date: Wed Jan 17 2007 - 09:04:47 ART
Hi GS!
I have a funny thing with VTP:
This is my topology:
PC1---SW1--------------SW2---------------SW3---PC2
(VTP server) (VTP Trans) (VTP Client)
This is my configuration on SW1,SW2,SW3: (all cat 2950)
SW1(config)# vtp mode server
SW1(config)# vtp domain CISCO
SW1(config)# vlan 1,2,3,4,5,6,7,8,9,10
SW1(config)# int f0/24
SW1(config-if)# sw mo ac
SW1(config-if)# sw ac vlan 10
SW2(config)# vtp mode transparent
SW2(config)# vtp domain CISCO
SW3(config)# vtp mode client
SW3(config)# vtp domain CISCO
SW1(config)# int f0/24
SW1(config-if)# sw mo ac
SW1(config-if)# sw ac vlan 10
PC1 connected to SW1 f0/24
PC2 connected to SW3 f0/24
This is result:
- SW3 have all VLAN learned from SW1, VLAN 1 to 10
- SW2 have only VLAN 1 (default vlan)
- Then pc1 CAN NOT ping pc2
- I use command: #show mac-address-table on SW3 -> no MAC entry of
pc1 and pc2
But if we create vlan 10 on SW2:
SW2(config)# vlan 10
Then pc1 CAN ping pc2 and #show mac-address-table on SW3 -> we can see MAC
entry of pc1 and pc2
So is this a bug of IOS?
I try on cat 3550 with ipservice 12.2(25)SEE2 -> still se this error!
If this is not error of IOS, so what's purpose of TRANSPARENT switch (SW3)??
Thanks!
HaDucBinh
Email: <mailto:haducbinh@vnpro.org> haducbinh@vnpro.org
Y/M: haducbinh
Phone: +84 908 191 322
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