Trunking on gigastac

Hi there,

I am a newbie so forguve my ignorance. I have come acroos 5 switches (3550's) that are all daisy chained via their gig ports. I am going to introduce 3 new vlans as there is only vlan 1. Would nd could i trunk the gig ports to allow the vlan traffic to traverse the switches to the router or would i trunk fa ports?

Sorry if this is a dumb question, but hey i didn't say i was bright :)

Thanks for any help.

Regards Andrew.

Reply to
tweety
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Start by downloading Cisco config guide for 3550 if you have not already done so

Catalyst 3550 Multilayer Switch Software Configuration Guide, Rel.

12.2(25)SE

formatting link

Post the output of show version and sh run ( remove passwords) so that responders will know what your starting point is.

Be sure to create a backup copy of the current config by either capturing the screen output of sh run of by copying via TFTP to a TFTP server.

Reply to
Merv

Hi,

I would imagine that the FastEthernet ports are connecting to hosts so they would be access ports in the relevant VLAN:

interface FastEthernet0/1 switchport host switchport access vlan 5

You just need to configure the gig ports for trunking...

interface GigabitEthernet0/1 switchport trunk encapsulation dot1q switchport mode trunk

Paul

Reply to
thefunnel

Very good advice.

I would be astonished if your proposal was not possible. The gigastack ports are just normal gigabit ports - behind the GBIC. Configure as any other trunk port I guess.

Reply to
Bod43

On Sep 15, 12:07 pm, snipped-for-privacy@hotmail.co.uk wrote:

Hi, Thanks for all your replies.

The layout is as following:

Cisco01695(3550) First floor--------------cisco2621 (backup internet access) | | Master_ONE (3550) Ground floor | | Master_ONE-1 (3550) Ground floor | | Master_ONE-2 (3550) Ground floor | | Master_ONE-3 (3550) Ground floor------------- (primary internet access)

The switches are all default vlan 1 access ports, i would like to configure another vlan in order to send traffic from a server in the new vlan via a secondary router.

This is the relevant part of the switch configs

Cisco01695

Current configuration: ! hostname Cisco01695 ! enable secret 5 $1$vDya$DsMs7Gi7nBSSFH6wflSWz/

ip subnet-zero ! cluster commander-address 0005.324b.6b00 member 5 name Cluster_ONE ! ! interface FastEthernet0/1 ! interface FastEthernet0/2 ! etc ! interface FastEthernet0/23 description TRUNK_LINK_TO_2600 switchport trunk encapsulation dot1q switchport mode trunk ! interface FastEthernet0/24 ! interface GigabitEthernet0/1 switchport trunk encapsulation dot1q switchport mode trunk ! interface GigabitEthernet0/2 ! interface VLAN1 ip address 150.150.100.93 255.255.255.0 no ip directed-broadcast no ip route-cache ! interface VLAN2 no ip directed-broadcast no ip route-cache shutdown ! snmp-server engineID local 00000009020000049A6ABAC0 snmp-server community private RW snmp-server community public RO snmp-server community public@es5 RO snmp-server community private@es5 RW

Master_ONE (3550) Ground floor Current configuration: ! hostname Master_ONE ! enable secret 5 $1$vDya$DsMs7Gi7nBSSFH6wflSWz/ ! ip subnet-zero cluster enable Cluster_ONE 0 cluster member 1 mac-address 0005.320c.8b00 cluster member 2 mac-address 0005.3240.7d40 cluster member 3 mac-address 0030.8547.b4c0 cluster member 4 mac-address 0004.4d02.3640 cluster member 5 mac-address 0004.9a6a.bac0 ! ! ! interface FastEthernet0/1 ! interface FastEthernet0/48 ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface VLAN1 ip address 150.150.100.212 255.255.255.0 no ip directed-broadcast ip nat outside ! ip default-gateway 150.150.100.8 ip nat inside source list 199 interface VLAN1 overload access-list 199 dynamic Cluster-NAT permit ip any any snmp-server engineID local 0000000902000005324B6B00 snmp-server community private RW snmp-server community public RO snmp-server community private@es0 RW snmp-server community public@es0 RO ! Master_ONE-1 (3550) Ground floor Current configuration: ! hostname Master_ONE-1 ! enable secret 5 $1$vDya$DsMs7Gi7nBSSFH6wflSWz/ ! ip subnet-zero ! cluster commander-address 0005.324b.6b00 member 1 name Cluster_ONE ! interface FastEthernet0/1 ! interface FastEthernet0/47 ! interface FastEthernet0/48 ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 ! interface VLAN1 ip address 150.150.100.213 255.255.255.0 no ip directed-broadcast no ip route-cache ! ip default-gateway 150.150.100.8 snmp-server engineID local 0000000902000005320C8B00 snmp-server community public@es1 RO snmp-server community private@es1 RW !

The other 2 switchws are the same except their vlan interfaces have different addresses on the same subnet and they have the same default gateway. I want vlan

2 to goto a different gateway.

I would appreciate any advice on this matter, does each switch get an ip address from the vlan 2 range?

And will this traffic point to the default gateway of vlan 1?

I need this traffic to goto the 2600 series router upstairs.

Thanks for any help it is appreciated.

Reply to
tweety

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