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Contributor
horly
Posts: 26
Registered: ‎08-04-2012
0
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Unable to ping L3 interfaces between an SRX and EX in the same VLAN

Been working on this fairly straight forward case for 2

days already, but cant seems to make any progress.

 

Appreciate if some can shed some light  

 

I have an EX that is trunk'ed to an SRX , on the vlans 'mgt' and 'guest wireless'. 

There is a layer 3 interface configures on vlan 'mgt' on both the 

SRX and the EX. 

 

However i cant seems to ping the L3 iface on the srx from the ex and vice versa. 

Can any one give me some pointers here ? 

 

 

SRX240 ( ge-0/0/12) <--------->(ge-3/0/34) EX4200

 

L3 on SRX 240 is '172.16.16.1/24'

L3 on EX4200 is '172.16.16.29/24' 

 

root@csw01# run ping 172.16.16.1 source 172.16.16.29 
ping: bind: Can't assign requested address

 

below are sample out put from the respective devices 

 

thanks for reading 

any help is most appreciated ! 

 

>>>>>>>>>>>>>>>SRX240

root@srx240-29LK# show interfaces ge-0/0/12 
unit 0 {
    family ethernet-switching {
       vlan {
       members mgt;
   }
 }
}

 

root@srx240-29LK# show vlans mgt 
vlan-id 101;
l3-interface vlan.1;

 

root@srx240-29LK# show interfaces vlan unit 1 
family inet {
address 172.16.16.1/24;
}

 

root@srx240-29LK# run show route

inet.0: 13 destinations, 14 routes (13 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

0.0.0.0/0 *[Static/5] 11w6d 07:28:40
> to 111.223.88.193 via ge-0/0/0.0
111.223.88.192/28 *[Direct/0] 11w6d 07:28:40
> via ge-0/0/0.0
111.223.88.195/32 *[Local/0] 11w6d 07:28:49
Local via ge-0/0/0.0
172.16.16.0/24 *[Direct/0] 02:08:04
> via vlan.1
172.16.16.1/32 *[Local/0] 02:08:04
Local via vlan.1
172.31.31.0/30 *[Direct/0] 4d 23:12:13
> via ae0.0
172.31.31.1/32 *[Local/0] 4d 23:12:16
Local via ae0.0
192.168.10.0/24 *[Direct/0] 1d 08:13:31
> via ge-0/0/14.0
192.168.10.1/32 *[Local/0] 1w4d 03:48:51
Local via ge-0/0/14.0
192.168.41.0/24 *[Direct/0] 03:10:07
> via ge-0/0/14.0
192.168.41.1/32 *[Local/0] 03:10:07
Local via ge-0/0/14.0
192.168.64.0/24 *[Static/5] 4d 00:21:30
> to 172.31.31.2 via ae0.0
192.168.123.250/32 *[Direct/0] 11w6d 07:22:30
> via ge-0/0/1.0
[Local/0] 11w6d 07:22:35
Local via ge-0/0/1.0

 

 

>>>>>>>>EX4200

 

root@csw01# show interfaces ge-0/0/43 
unit 0 {
family ethernet-switching;
}

{master:0}[edit]
root@csw01# show interfaces ge-3/0/43 
unit 0 {
family ethernet-switching {
port-mode trunk;
vlan {
members [ mgt guest-wireless ];
}
}
}

{master:0}[edit]
root@csw01# show vlans mgt 
vlan-id 101;
interface {
ge-0/0/47.0;
}
l3-interface vlan.0;

{master:0}[edit]
root@csw01# show interfaces vlan unit 0 
family inet {
address 172.16.16.29/24;
}

{master:0}[edit]
root@csw01# run show route

inet.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

0.0.0.0/0 *[Static/5] 22:39:58
> to 172.31.31.1 via ae8.0
172.31.31.0/30 *[Direct/0] 22:39:58
> via ae8.0
172.31.31.2/32 *[Local/0] 22:39:58
Local via ae8.0
192.168.64.0/24 *[Direct/0] 22:39:58
> via vlan.1
192.168.64.1/32 *[Local/0] 22:39:58
Local via vlan.1
192.168.66.1/32 *[Local/0] 22:39:58
Reject
192.168.68.1/32 *[Local/0] 22:39:58
Reject
224.0.0.22/32 *[IGMP/0] 4w1d 01:07:32
MultiRecv

r1.inet.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.16.16.0/24 *[Direct/0] 02:49:00
> via vlan.0
172.16.16.29/32 *[Local/0] 02:49:00
Local via vlan.0

{master:0}[edit]

Super Contributor
jcollazo
Posts: 97
Registered: ‎05-19-2009
0

Re: Unable to ping L3 interfaces between an SRX and EX in the same VLAN

Based on the configuration posted port ge-3/0/43 on the EX switch is set to trunk mode but port ge-0/0/12 on the SRX does not appear to be configured for trunk mode.  They need to match either set them both to trunk mode or both to access mode.

Contributor
horly
Posts: 26
Registered: ‎08-04-2012
0

Re: Unable to ping L3 interfaces between an SRX and EX in the same VLAN

Hi Jcoliazo,

you 're right ! that seems to be what is causing the problem 

 

Kudos to you man 

Contributor
horly
Posts: 26
Registered: ‎08-04-2012
0

Re: Unable to ping L3 interfaces between an SRX and EX in the same VLAN

Hi All,

is it possible to configure an ethernet aggregated interface on the SRX and the EX, 

and use them to trunk the VLANs instead of the ge-0/0/x ?

I have known that to work between EX switches, but will it work between an SRX and a EX ? 

 

Thanks in advance ! 

 

Horly

Super Contributor
jcollazo
Posts: 97
Registered: ‎05-19-2009
0

Re: Unable to ping L3 interfaces between an SRX and EX in the same VLAN

Take a look at this link for an SRX to EX LACP config: http://kb.juniper.net/InfoCenter/index?page=content&id=KB22474&actp=RSS

As far as trunking goes it is the same as trunking on a physical interface.  Set the mode to trunk and add the VLANs as members (on the aggregated interface not the physical interfaces).

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