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New Member

some problems about 3550-48-emi


when i working with 3550-emi switch , i find some problems .

1 in my network ip address were subneted into 8 vlan

the 3550 act as layer 3 switch , when i config the switch ex vlan, ip routing

correctly,but the vlan svi can't be ping correctly , how can i active the vlan

svi, except add some layer 2 interface to the specified vlan . Are these any

methods to active the vlan routing ?

2 how can i configue the switch to make it can be managed througt telnet,

how can i add an ip address to make this possible? the management

vlan must be vlan 1? , i can't find the command to set other vlan to be for managemnet (ios 12.1(11)ea1)



Re: some problems about 3550-48-emi


1) AFAIK, you need one L2 port active in the VLAN to SVI become working on L3. It's the same as on classical router: if the port is down on L2 it will not respond to ping on L3, too.

2) When your 3550 is routing it can be managed through any IP interface.

When it's not routing there is only one VLAN interface active (VLAN1 default). If you want to change management to VLAN2, e.g., configure int VLAN2, IP address ...., no shutdown (and shutdown should be done on VLAN1 interface).



New Member

Re: some problems about 3550-48-emi

hi Milan

first thanks for the helps

I still have another problem , if the 3550 only server as layer 3 switch , it connect with other layer 2 switch through trunk ports , in common , cisco say

the trunk can traffic all vlans ,in such nework how can i active the vlan routing,

Does this possible?

with best regards

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