Solved: TRUNK between 2 SG Switches Grabbing IP NOT in vlan

TheGoob · ‎01-24-2024

Hey there

So, I have

SG350XG, 6 vlans [2-6 to be trunked], each vlan has it's own DHCP Server [vlan 2, 192.168.2.0, vlan 3 192.168.3.0 and so on]. I have GE XG/1 set as TRUNK, and then port to vlan has vlan 2-6. vlan 1 is NOT in the Trunk, and is 192.168.5.0.

SG500X, 6 vlans, 4 ports associated to each vlan [2-6]. GE 1/24 set as TRUNK and then port to vlan has vlan 2-6. NO DHCP, NO DNS, Nothing; Just 5 vlans [2-6] and then the TRUNK Interface.

When I plug into GE 1/1 - 1/4 I get...wait for it... 192.168.5.0??? #1 Not even on this SG500X and #2 not even part of the vlans on the Trunk; 192.168.5.0 is vlan 1 from SG350XG.So 1-4 grabs 192.168.5.0 [should be 192.168.1.0] but strangely enough GE 5-8 grabs 192.168.2.0, GE 9-12 grabs 1o2.168.3.0 and so on.

So that is first weird thing, 1-4 grabs a sub net not even on trunk, second, the other Interfaces DO grab their correct DHCP IP, but apparently does not grab DNS or any routing. Am I missing more config? Something just seems off.

TheGoob · ‎01-25-2024

Created vlan Interfaces on "receiving" TRUNK, now seems to all work correctly.

View solution in original post

TheGoob · ‎01-24-2024

Bump

TheGoob · ‎01-25-2024

Here are both my Switches configs.. Anyone see something I am not?

SERVER SWITCH [1ST]

show running-config
config-file-header
switchbf585b
v2.5.9.54 / RCBS3.1_930_871_120
CLI v1.0
file SSD indicator encrypted
@
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end cb0a3fdb1f3a1af4e4430033719968c0
!
!
unit-type-control-start
unit-type unit 1 network te uplink none
unit-type unit 2 network te uplink none
unit-type unit 3 network te uplink none
unit-type unit 4 network te uplink none
unit-type-control-end
!
vlan database
vlan 2-6
exit
voice vlan oui-table add 0001e3 Siemens_AG_phone
voice vlan oui-table add 00036b Cisco_phone
voice vlan oui-table add 00096e Avaya
voice vlan oui-table add 000fe2 H3C_Aolynk
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone
voice vlan oui-table add 00e075 Polycom/Veritel_phone
voice vlan oui-table add 00e0bb 3Com_phone
ip dhcp server
ip dhcp pool network 177
address low 192.168.6.1 high 192.168.6.254 255.255.255.0
dns-server 192.168.4.115
exit
ip dhcp pool network fhc
address low 192.168.2.1 high 192.168.2.254 255.255.255.0
dns-server 192.168.4.115
exit
ip dhcp pool network ceyea
address low 192.168.3.1 high 192.168.3.254 255.255.255.0
dns-server 192.168.4.115
exit
ip dhcp pool network fbeye
address low 192.168.1.1 high 192.168.1.254 255.255.255.0
dns-server 192.168.4.115
exit
ip dhcp pool network proxmox
address low 192.168.4.1 high 192.168.4.254 255.255.255.0
dns-server 192.168.4.115
exit
bonjour interface range oob
hostname switchbf585b
username cisco password encrypted $15$7FFi5X/ArRy2Bbd/$E6B2+QPb/Kb91F0eWlcSF+8dbk5L7ytA6uF7lE9GZEvIAylhp+6AbheJWZ048vTrlAGn3FF4UBZapDuY71D2aw== privilege 15
ip ssh server
ip name-server  192.168.4.115
!
interface vlan 2
 name fbeye
 ip address 192.168.1.1 255.255.255.0
!
interface vlan 3
 name fhc
 ip address 192.168.2.1 255.255.255.0
!
interface vlan 4
 name ceyea
 ip address 192.168.3.1 255.255.255.0
!
interface vlan 5
 name proxmox
 ip address 192.168.4.1 255.255.255.0
!
interface vlan 6
 name 177
 ip address 192.168.6.1 255.255.255.0
!
interface TenGigabitEthernet1/0/5
 switchport access vlan 2
 switchport trunk native vlan 2
!
interface TenGigabitEthernet1/0/6
 switchport access vlan 3
 switchport trunk native vlan 3
!
interface TenGigabitEthernet1/0/7
 switchport mode trunk
 switchport access vlan none
 switchport trunk native vlan none
 switchport trunk allowed vlan 2-6
!
interface TenGigabitEthernet1/0/8
 switchport access vlan 5
 switchport trunk native vlan 5
!
interface TenGigabitEthernet1/0/9
 switchport access vlan 6
 switchport trunk native vlan 6
!
interface TenGigabitEthernet1/0/10
 ip address 192.168.8.2 255.255.255.0
 no switchport
!
interface Port-Channel1
 switchport mode trunk
 switchport access vlan none
 switchport trunk native vlan none
 switchport trunk allowed vlan 2-6
!
interface oob
 ip address 192.168.7.254 255.255.255.0
 no ip address dhcp
!
exit
no macro auto processing cdp
no macro auto processing lldp
macro auto processing type ip_phone disabled
macro auto processing type ip_phone_desktop disabled
macro auto processing type switch disabled
macro auto processing type ap disabled
ip default-gateway 192.168.8.1

RECEIVING SWITCH [2ND]

running-config
config-file-header
switchff1e41
v2.5.9.54 / RCBS3.1_930_871_120
CLI v1.0
file SSD indicator encrypted
@
ssd-control-start
ssd config
ssd file passphrase control unrestricted
no ssd file integrity control
ssd-control-end cb0a3fdb1f3a1af4e4430033719968c0
!
!
unit-type-control-start
unit-type unit 1 network gi uplink te
unit-type unit 2 network gi uplink te
unit-type unit 3 network gi uplink te
unit-type unit 4 network gi uplink te
unit-type unit 5 network gi uplink te
unit-type unit 6 network gi uplink te
unit-type unit 7 network gi uplink te
unit-type unit 8 network gi uplink te
unit-type-control-end
!
voice vlan oui-table add 0001e3 Siemens_AG_phone
voice vlan oui-table add 00036b Cisco_phone
voice vlan oui-table add 00096e Avaya
voice vlan oui-table add 000fe2 H3C_Aolynk
voice vlan oui-table add 0060b9 Philips_and_NEC_AG_phone
voice vlan oui-table add 00d01e Pingtel_phone
voice vlan oui-table add 00e075 Polycom/Veritel_phone
voice vlan oui-table add 00e0bb 3Com_phone
bonjour interface range vlan 1
hostname switchff1e41
username cisco password encrypted $15$ax5unu8ewy8d7MT7$MIsdHCksWynAtZX0B78mAKezgHGZWZ2yEeZ+3k+TiddwPWWe8Ym8vD5werFFEGxjYv0d15Sq1JauzX6ML7Yz9Q== privilege 15
!
interface vlan 1
 ip address 192.168.7.254 255.255.255.0
 no ip address dhcp
!
interface GigabitEthernet1/0/1
 switchport access vlan 2
!
interface GigabitEthernet1/0/2
 switchport access vlan 2
!
interface GigabitEthernet1/0/3
 switchport access vlan 2
!
interface GigabitEthernet1/0/4
 switchport access vlan 2
!
interface GigabitEthernet1/0/5
 switchport access vlan 3
!
interface GigabitEthernet1/0/6
 switchport access vlan 3
!
interface GigabitEthernet1/0/7
 switchport access vlan 3
!
interface GigabitEthernet1/0/8
 switchport access vlan 3
!
interface GigabitEthernet1/0/9
 switchport access vlan 5
!
interface GigabitEthernet1/0/10
 switchport access vlan 5
!
interface GigabitEthernet1/0/11
 switchport access vlan 5
!
interface GigabitEthernet1/0/12
 switchport access vlan 5
!
interface GigabitEthernet1/0/13
 switchport access vlan 6
!
interface GigabitEthernet1/0/14
 switchport access vlan 6
!
interface GigabitEthernet1/0/15
 switchport access vlan 6
!
interface GigabitEthernet1/0/16
 switchport access vlan 6
!
interface TenGigabitEthernet1/0/1
 switchport mode trunk
 switchport access vlan none
 switchport trunk native vlan none
 switchport trunk allowed vlan 2-6
!
exit

It has got to be the easiest trunk ever. SW1 vlan 1-6 [2-6 for TRUNK] SW2 vlan 1-6 [2-6] for TRUNK.

Maybe I just dont know how a trunk works, I ASSUME anything on SW in whatever vlan, will grab its DHCP IP from SWITCH1 of that vlan. Just making SW2 an "EXTENSION" of SW, but with the DHCP Server

TheGoob · ‎01-25-2024

Created vlan Interfaces on "receiving" TRUNK, now seems to all work correctly.