теперь про себя, - собрал на столе такую схему:
[dhcp-server]--trunk--[edge-core]--trunk--[lte-8x]--trunk--[mes1124]vlan38 - pon dhcp_opt82 абонент - (доходит до lte-8x и уходит в pon-порты)
vlan110 - dhcp_opt82 абонент - (проходит через lte-8x к абоненстким портам mes1124)
vlan64 - mgmt pon (доходит до lte-8x)
vlan252 mgmt switch (доходит до mes1124)
конфиг lte-8x(switch)
Код: Выделить всё
LTE-8X(switch)# show run
management ip 192.168.64.40 255.255.255.0
management vlan 64
mirror rx analyzer front-port 0
mirror tx analyzer front-port 0
mac-address-table aging-time 60
ip dhcp trusted-server-ip 192.168.111.2 primary
ip dhcp trusted-server-ip 192.168.110.2 secondary
port-channel load-balance mac
qos type 0
interface mgmt-pon-port 0
pvid 64
exit
interface mgmt-pon-port 1
pvid 64
exit
interface mgmt-pon-port 2
pvid 64
exit
interface mgmt-pon-port 3
pvid 64
exit
interface front-port 0
bridging to front-port 1
pvid 252
exit
interface front-port 1
bridging to front-port 0
pvid 252
exit
vlan 1
exit
vlan 38
name VLAN0038
isolation assign group 0 to pon-port 0-7
tagged pon-port 0 , pon-port 1 , front-port 0
exit
vlan 64
name VLAN0064
isolation assign group 0 to pon-port 0-7
tagged front-port 0
untagged mgmt-pon-port 0 , mgmt-pon-port 1 , mgmt-pon-port 2 , mgmt-pon-port 3
exit
vlan 110
name VLAN0110
isolation assign group 0 to pon-port 0-7
tagged front-port 0 , front-port 1
exit
vlan 111
name VLAN0111
isolation assign group 0 to pon-port 0-7
tagged front-port 0 , front-port 1
exit
vlan 252
name VLAN0252
isolation assign group 0 to pon-port 0-7
tagged front-port 0 , front-port 1
exit
конфиг lte-8x(olt-0-layer3)
Код: Выделить всё
LTE-8X(OLT0)# show config layer3
OLT0 Layer3 parameters
DHCP Snooping / SW Learning enable: yes
DHCP Autonomous Bind / Unbind Reporting enable: no
DHCP Relay Agent (insert Option 82 if provided): yes
DHCP Relay Agent Set giaddr: no
Insert Opt 82 for Unicast DHCP Requests also: no
Trust Other DHCP Relay Agent: no
ARP Snooping Enable (Requires DHCP SW Learning): no
ARP Mode (0 = Directed ARP, 1 = ARP Proxy): directed_arp
RARP Snooping Enable: no
RARP Mode (0 = Directed RARP, 1 = RARP Proxy): directed_rarp
Disable Upstream ARP Request validation: no
Disable Downstream ARP Reply validation: no
Disable Upstream ARP Reply validation: no
Exclude UDP multicast IP fragments: no
Validate IP Checksum on received frames: no
Validate UDP Checksum on received frames: no
Disable Downstream INFORM ACK Reply validation: no
Disable Upstream RELEASE validation: no
Disable Upstream DECLINE validation: no
Overwrite Client's Option 82: no
Use MAC address based HW forwarding rules: no
Use IPv4 address based HW forwarding rules: no
Maximum Number of Bound Clients / IPs: 256
DHCP Timer Update Interval: 2
DHCP Server Response Timeout: 30
Maximum DHCP Lease Time: 0
Option 82 Format: text
конфиг mes1124
Код: Выделить всё
252-222#show run
ip dhcp relay enable
ip dhcp information option
ip dhcp snooping
ip dhcp snooping vlan 110
ip dhcp snooping vlan 111
!
vlan database
vlan 110-111,252
exit
!
loopback-detection enable
!
hostname 252-222
!
username admin password encrypted fd90aba17423d86e70362d7befd36b8d1c75adf3 privilege 15
!
no ip http server
!
interface fastethernet 1/0/4
loopback-detection enable
switchport access vlan 111
switchport forbidden default-vlan
ip dhcp information option format-type circuit-id Vlan111+Ethernet1/0/4
ip dhcp information option format-type remote-id 252-222
exit
!
interface fastethernet 1/0/5
loopback-detection enable
switchport access vlan 110
switchport forbidden default-vlan
ip dhcp information option format-type circuit-id Vlan110+Ethernet1/0/5
ip dhcp information option format-type remote-id 252-222
exit
!
interface gigabitethernet 1/0/4
ip dhcp snooping trust
switchport mode trunk
switchport trunk allowed vlan add 110-111
switchport trunk native vlan 252
switchport forbidden default-vlan
exit
!
interface vlan 252
ip address 192.168.252.222 255.255.255.0
exit
итог:- трафик ходит куда надо, управление работает и на lte-8x и на mes1124
- pon-абонет работает, получает ip по dhcp c помощью opt82
- абоненты на mes1124 - трафик есть, но dhcp_opt82 не работает

проблема на lte-8x, если его(lte-8x) убрать - все работает. как починить? функий отвечающаих на lte-8x(switch) не нашел

но ведь он и не должен ничего блокировать, так как снупинга нет..