From: Mike Williams (ccie2be@swbell.net)
Date: Sat Aug 09 2003 - 13:24:22 GMT-3
Sure..... Why not? If a host on any particular VLAN uses the IP from
the switch for that same VLAN as it's gateway, then once the switch
receives it, it'll route it over to the proper (connected)
subnet......... You need to have IP routing enabled, but no routing
protocol is needed......
Mike W.
-----Original Message-----
From: Peng Zheng [mailto:zpnist@yahoo.com]
Sent: Friday, August 08, 2003 9:46 PM
To: Mike Williams
Subject: RE: Cat 3550
You means host on vlan 19 can communicate with host on
vlan 20 without routing protocol?
--- Mike Williams <ccie2be@swbell.net> wrote:
> If you've setup two 3550s with these VLANs and IPs,
> then the only thing
> you would need to do to allow these hosts to
> communicate is A) make sure
> you are trunking those VLANs between the two
> switches (which you may
> have already done as part of your exercise) and B)
> make sure the hosts
> are using one of the IPs on their respective VLAN as
> their gateway.
> There shouldn't be any need for a routing protocol
> to be running for
> inter-VLAN routing to take place here....
>
> Mike W.
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On Behalf Of
> Peng Zheng
> Sent: Friday, August 08, 2003 9:04 PM
> To: ccielab@groupstudy.com
> Subject: Cat 3550
>
>
> 1. Config cat1 vlan 19 with IP 10.10.19.8/24, Vlan
> 20
> with IP 10.10.20.8/24 and Vlan 21 with IP
> 10.10.21.8/24.
>
> 2. Config cat2 vlan 19 with IP 10.10.19.9/24, Vlan
> 20
> with IP 10.10.20.9/24 and Vlan 21 with IP
> 10.10.21.9/24.
>
> 3. Configure cat1 and cat2 such that hosts on vlan
> 19,
> 20, 21 can communicate to each other.
>
> It's easy for the first two. For the third one, I
> think I must configure routing protocol on these
> Vlans.
>
> But I can not find related configs in the solution.
> Below are configs related to routing and these
> Vlans:
>
> ------------------------------------------
>
>
> interface FastEthernet0/19
> switchport access vlan 19
> no ip address
> spanning-tree portfast
> !
> interface FastEthernet0/20
> switchport access vlan 20
> no ip address
> spanning-tree portfast
> !
> interface FastEthernet0/21
> switchport access vlan 21
> no ip address
> spanning-tree portfast
> !
> interface FastEthernet0/22
> switchport trunk encapsulation isl
> switchport trunk allowed vlan 1,2,15,19-21,1001-4094 switchport mode
> trunk no ip address
> spanning-tree vlan 19 cost 4
> !
> interface FastEthernet0/23
> switchport trunk encapsulation isl
> switchport trunk allowed vlan 1,2,15,19-21,1001-4094
> switchport mode trunk
> no ip address
> spanning-tree vlan 20 cost 4
> !
> interface FastEthernet0/24
> switchport trunk encapsulation isl
> switchport trunk allowed vlan 1,2,15,19-21,1001-4094
> switchport mode trunk
> no ip address
> spanning-tree vlan 21 cost 4
> !
> interface GigabitEthernet0/1
> no switchport
> ip address 10.10.89.8 255.255.255.0
> !
> interface GigabitEthernet0/2
> no ip address
> !
> interface Vlan1
> no ip address
> shutdown
> !
> interface Vlan15
> ip address 150.50.15.8 255.255.255.0
> ip ospf authentication message-digest
> ip ospf message-digest-key 1 md5 hello
> !
> interface Vlan19
> ip address 10.10.19.8 255.255.255.0
> no ip redirects
> standby timers 5 15
> standby 1 ip 10.10.19.100
> standby 1 priority 200
> standby 1 preempt
> standby 2 ip 10.10.19.200
> standby 2 timers 5 15
> standby 2 priority 100
> !
> interface Vlan20
> ip address 10.10.20.8 255.255.255.0
> no ip redirects
> standby timers 5 15
> standby 1 ip 10.10.20.100
> standby 1 priority 200
> standby 1 preempt
> standby 2 ip 10.10.20.200
> standby 2 timers 5 15
> standby 2 priority 100
> !
> interface Vlan21
> ip address 10.10.21.8 255.255.255.0
> no ip redirects
> standby 1 ip 10.10.21.100
> standby 1 timers 5 15
> standby 1 priority 200
> standby 1 preempt
> standby 2 ip 10.10.21.200
> standby 2 timers 5 15
> standby 2 priority 100
> !
> router ospf 100
> log-adjacency-changes
> network 150.50.15.0 0.0.0.255 area 0
> !
>
> -------------------------------------------------
>
>
> I don't know how these vlans communicate to each
> other.
>
>
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This archive was generated by hypermail 2.1.4 : Tue Sep 02 2003 - 18:53:56 GMT-3