I have the following scenario:
EX2200 Switch whit
- ge-0/0/8 set as an access port on VLAN 80
- ge-0/0/0 set as a trunk
port connected to a catalyst switch and various vlans allowed to pass includin vlan 80
On the Catalyst Switch.
- port #3 set up as a trunk port that receives traffic from the EX switch.
- port 46 is set up also as a trunk port that connects to a cisco router.
Port #48 is where the host used to be connected
host → EX2200 → Catalyst → Router
the problem is that this EX2200 is a new addition to the network and the host connected previosly to the catalyst switch on GigabitEthernet1/48.
traffic is not getting from the host to the router, but the router can send ARP request to the host.
following is the relevant configuration:
Catalyst Switch:
interface GigabitEthernet1/3 ### trunk to EX2200 Switch
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 69,74,80,82,231,401
switchport mode trunk
!
interface GigabitEthernet1/46
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 80,82,83,93,289
switchport mode trunk
mtu 1532
media-type rj45
speed 1000
duplex full
arp timeout 300
!
interface GigabitEthernet1/48
switchport access vlan 80
switchport mode access
mtu 1532
media-type rj45
speed 100
duplex full
arp timeout 300
no cdp enable
!
EX2200 Switch:
ge-0/0/0 { ###TRUNK TO Catalyst switch on Ge 1/3
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members [ 69 74 80 82 231 401 ];
}
native-vlan-id 1;
}
}
}
root@XXXXX# show vlans
...
XXXXXXXXXXXXXXX { ###CONNECTS TO Host that was on cisco Ge 1/48
vlan-id 80;
interface {
ge-0/0/8.0;
}
}
...
So, to resume the problem, when the host is connected to port 48 of cisco switch, everyting works, but when we move connection to new switch EX2200 on port ge-0/0/8 traffic stops working.
Another note is that VLAN 69 that is configured on the EX2200 switch on ports 3 to 5 works fine.
we did another test and replaced juniper switch with cisco switch, and the traffic flows normally.
Best Answer
You stated that ports 3 and 42 were configured on the Catalyst switch, but then provided configurations for ports 46 and 48. The configuration you posted for port 46 should be applied to port 3 that connects to the EX2200. Your router's connection is unchanged, so hopefully we can assume that configuration is fine.
Now, on the EX2200, the following lines of code would be appropriate to do the following:
ge-0/0/0 - trunk allowing the same vlans as defined above on port 46
ge-0/0/6 - access port on VLAN80
Some other suggestions for you:
1) Turn on LLDP on your switch so you can do a show lldp neighbors and see where your connections go.
2) Don't use RSTP for spanning tree on the juniper switch, it doesn't play nice with Cisco that well, use VSTP instead. If you end up with a ton of vlans, you might even need to use MSTP.
3) Turn off chassis alarm for the management ethernet if you're not using it.
On the EX2200:
On the Catalyst (if it supports it)