Routing anomalous between VLAN
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‎04-09-2019 01:34 PM
You can not understand why a PC (IP 192.168.10.130) of a vlan31 pings another PC (IP 192.168.4.66) of a vlan40
We all have enterasys switches series B5 and extreme networks and in theory there is one of these switches that acts as a routing but if I analyze the configuration of the switch I don't detect connection between the different vlan ...
the section of the routing configuration file of the routing switch 10.254 it's the following:
#vlan
set vlan create 30
set vlan create 31
set vlan create 40
set vlan create 50
set vlan name 30 "VL-AUTOMAZIONE-PLC-AQ"
set vlan name 31 "VL-AUTOMAZIONE-MGT"
set vlan name 40 "VL-AUTOMAZIONE-PC-AQ"
set vlan name 50 "VL-BADGE-AQ"
clear vlan egress 1 ge.1.1-44
set vlan egress 30 ge.1.45-48 tagged
set vlan egress 30 ge.1.1-22 untagged
set vlan egress 31 ge.1.45-48 tagged
set vlan egress 40 ge.1.45-48 tagged
set vlan egress 40 ge.1.23-44 untagged
set vlan egress 50 ge.1.45-48 tagged
set host vlan 31
!
#Router Configuration
router
enable
configure
interface vlan 30
ip address 192.168.0.254 255.255.255.0
no shutdown
exit
interface vlan 31
ip address 192.168.10.254 255.255.255.0
no shutdown
exit
interface vlan 40
ip address 192.168.2.254 255.255.255.0
ip address 192.168.4.254 255.255.255.0 secondary
ip address 192.168.6.254 255.255.255.0 secondary
no shutdown
exit
interface vlan 50
ip address 192.168.50.254 255.255.255.0
no shutdown
exit
exit
We all have enterasys switches series B5 and extreme networks and in theory there is one of these switches that acts as a routing but if I analyze the configuration of the switch I don't detect connection between the different vlan ...
the section of the routing configuration file of the routing switch 10.254 it's the following:
#vlan
set vlan create 30
set vlan create 31
set vlan create 40
set vlan create 50
set vlan name 30 "VL-AUTOMAZIONE-PLC-AQ"
set vlan name 31 "VL-AUTOMAZIONE-MGT"
set vlan name 40 "VL-AUTOMAZIONE-PC-AQ"
set vlan name 50 "VL-BADGE-AQ"
clear vlan egress 1 ge.1.1-44
set vlan egress 30 ge.1.45-48 tagged
set vlan egress 30 ge.1.1-22 untagged
set vlan egress 31 ge.1.45-48 tagged
set vlan egress 40 ge.1.45-48 tagged
set vlan egress 40 ge.1.23-44 untagged
set vlan egress 50 ge.1.45-48 tagged
set host vlan 31
!
#Router Configuration
router
enable
configure
interface vlan 30
ip address 192.168.0.254 255.255.255.0
no shutdown
exit
interface vlan 31
ip address 192.168.10.254 255.255.255.0
no shutdown
exit
interface vlan 40
ip address 192.168.2.254 255.255.255.0
ip address 192.168.4.254 255.255.255.0 secondary
ip address 192.168.6.254 255.255.255.0 secondary
no shutdown
exit
interface vlan 50
ip address 192.168.50.254 255.255.255.0
no shutdown
exit
exit
1 REPLY 1
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‎04-16-2019 04:52 PM
Hi Visconti,
If I understand your question, when you set up routing interfaces on a 'switch' (we should say 'router' at this point  ), it will route between those interfaces without hesitation. There is no need to 'connect' those interfaces, router will have all directly connected networks (VLANs with IP addresses that are up, i.e. at least one interface in that VLAN is active) in its routing table so it can route. You could limit that with Policy on B5 or Policy/ACL on EXOS.
Hope that helps,
Tomasz
If I understand your question, when you set up routing interfaces on a 'switch' (we should say 'router' at this point  ), it will route between those interfaces without hesitation. There is no need to 'connect' those interfaces, router will have all directly connected networks (VLANs with IP addresses that are up, i.e. at least one interface in that VLAN is active) in its routing table so it can route. You could limit that with Policy on B5 or Policy/ACL on EXOS.
Hope that helps,
Tomasz
