Routing

Hi, 

We need to activate the helper bootp on EX9204 and is not working.   Also we see a warning that indicates that this is not supported on this switches.  I want to know if there is any way that this could work.  

}
##
## Warning: configuration block ignored: unsupported platform (ex9204)
##
bootp {
relay-agent-option;
server x.x.x.;
interface {
irb.4021;
ge-1/1/6.0;
ge-1/1/7.0;
ge-1/2/4.0;
ge-1/2/5.0;
}

We have the same conf. on EX4200 and we have no problems.  Help please!. Thank you!

Regards. 

EC

Hi,

EX9204 using Junos ELS. The config is different for relay option.

Hi, 

This is the config, the bootp still not working, any suggestions... please...

@jun.ex9204> show configuration forwarding-options
helpers {
tftp {
server 10.7.2.10;
interface {
irb.4021 {
broadcast;
}
}
}
##
## Warning: configuration block ignored: unsupported platform (ex9204)
##
bootp {
relay-agent-option;
server 10.7.2.10;
interface {
irb.4021 {
broadcast;
}
}
}
}
dhcp-relay {
overrides {
trust-option-82;
bootp-support;
}
server-group {
DHCPSrv {
10.7.2.10;
}
}
active-server-group DHCPSrv;
group DHCPSrv {
interface irb.4021;
}
}

{master}

Hello, ecallen!

I'd like to verify DHCP relay is functioning at all. Are you seeing incrementing counters on the dhcp relay statistics? Are leases being offered and accepted by the clients? Essentially, is the only issue BOOTP?

Below is an example output from my lab. 

user@demo1> show dhcp relay statistics
Packets dropped:
    Total                      15833
    Invalid server address     3064
    Interface not configured   9301
    Send error                 1
    No binding found           3467

Messages received:
    BOOTREQUEST                7389
    DHCPDECLINE                0
    DHCPDISCOVER               1810
    DHCPINFORM                 5468
    DHCPRELEASE                0
    DHCPREQUEST                111
    DHCPLEASEACTIVE            0
    DHCPLEASEUNASSIGNED        0
    DHCPLEASEUNKNOWN           0
    DHCPLEASEQUERYDONE         0

Messages sent:
    BOOTREPLY                  5877
    DHCPOFFER                  3577
    DHCPACK                    2291
    DHCPNAK                    9
    DHCPFORCERENEW             0
    DHCPLEASEQUERY             0
    DHCPBULKLEASEQUERY         0

Packets forwarded:
    Total                      1755
    BOOTREQUEST                0
    BOOTREPLY                  1755

{master:0}
user@demo1>

Hi, 

Yes this are the results: 

-(refreshed at 2017-05-19 12:19:30 CST)---
Packets dropped:
Total 0

Messages received:
BOOTREQUEST 3
DHCPDECLINE 0
DHCPDISCOVER 0
DHCPINFORM 0
DHCPRELEASE 0
DHCPREQUEST 0

Messages sent:
BOOTREPLY 0
DHCPOFFER 0
DHCPACK 0
DHCPNAK 0

We receive the requests but sending any.

Do you have a route for 10.7.2.10? Are you able to ping it? Do you have any filters, such as a Loopback or interface filters applied? You may want to set a trace to see how JDHCP is handling the request. 

set system processes dhcp-service traceoptions file JDHCP
set system processes dhcp-service traceoptions file size 5m
set system processes dhcp-service traceoptions file files 2
set system processes dhcp-service traceoptions flag all

Feel free to attach the JDHCP trace when you're done capturing.

Hi, 

We notice some filters on a Vlans IRB, I remove it and now we do see "replays  on the dhcp relay: 

---(refreshed at 2017-05-19 14:20:18 CST)---
Packets dropped:
Total 0

Messages received:
BOOTREQUEST 2
DHCPDECLINE 0
DHCPDISCOVER 0
DHCPINFORM 0
DHCPRELEASE 0
DHCPREQUEST 0

Messages sent:
BOOTREPLY 2
DHCPOFFER 0
DHCPACK 0
DHCPNAK 0
DHCPFORCERENEW 0
---(*more 100%)---[abort]

However on the IRB.4021, we also receive the messages but not replay. I guess is something missing on the IRB.

ackets dropped:
Total 0

Messages received:
BOOTREQUEST 2
DHCPDECLINE 0
DHCPDISCOVER 0
DHCPINFORM 0
DHCPRELEASE 0
DHCPREQUEST 0

Messages sent:
BOOTREPLY 0
DHCPOFFER 0
DHCPACK 0
DHCPNAK 0
DHCPFORCERENEW 0
---(*more 100%)---[abort]

{master}

This is our config:

@> show configuration forwarding-options
helpers {
tftp {
server 10.7.2.10;
interface {
irb.4021 {
broadcast;
}
}
}
}
dhcp-relay {
forward-snooped-clients all-interfaces;
overrides {
layer2-unicast-replies;
bootp-support;
}
relay-option-82;
server-group {
DHCPSrv {
10.7.2.10;
}
}
active-server-group DHCPSrv;
group DHCPSrv {
interface irb.4021 {
overrides {
bootp-support;
}
}
}
}

@> show configuration vlans XXXXXX 
vlan-id 4021;
l3-interface irb.4021;
forwarding-options {
dhcp-security {
group DHCPSrv {
overrides {
trusted;
}
}
}
}

Hi, 

We restart the dhcp-service and everithing work ok.  

Regards.

Emilio Callen.