Здравствуйте!
Столкнулся со следующей проблемой - автоматически не присваивается IP адрес любым wi-fi роутерам (в том числе и длинкам) подключенным в нашу сеть. Если же напрямую подключить последнюю милю из роутера в сетевую карточку компьютера, адрес присваивается. Вначале грешил на настройку свичей доступа и dhcp-сервер, но после tcpdumpа оказалось что пакеты с запросами с роутеров до dhcp-сервера не доходят.
Собрал тестовую схемку: роутер подключен в DES-3028, который в свою очередь подключен в тестовый узел на базе DGS-3612G (F/W: 2.84-B43) и DGS-3610-26G (F/W: 10.4). Настройка свичей доступа (DES-3028) для обоих узлов одинаковая. В итоге: через DGS-3610-26G IP адреса присваиваются и роутерам и компьютерам, а через DGS-3612G - только компьютерам. DHCP-сервер работает нормально. Значит проблема в DGS-3612G. После ввода команды show error ports 1 узел выдает следующее:
Код:
Port number : 1
RX Frames TX Frames
--------- ---------
CRC Error 0 Excessive Deferral 0
Undersize 0 CRC Error 0
Oversize 0 Late Collision 0
Fragment 0 Excessive Collision 0
Jabber 0 Single Collision 0
Drop Pkts 86 Collision 0
Symbol Error 0
Buffer Full Drop 0
ACL Drop 0
Multicast Drop 0
VLAN Ingress Drop 85
Видно что узел дропает пакеты.
На этот порт (1-й) подключен свич доступа, 1 тестовый компьютер и 1 тестовый роутер.
Конфига DGS-3612G вот такая:
------------------------------------------------------------------------------------------------------------
Код:
# PORT
disable jumbo_frame
config jumbo_frame ports 1-12 state enable
config ports 1-8 speed auto capability_advertised 100_full 1000_full flow_control disable learning enable state enable
config ports 9-12 medium_type copper speed auto capability_advertised 10_half 10_full 100_half 100_full 1000_full flow_control disable learning enable state enable
config ports 9-12 medium_type fiber speed auto capability_advertised 100_full 1000_full flow_control disable learning enable state enable
# PORT_LOCK
config port_security ports 1-12 admin_state disable max_learning_addr 1 lock_address_mode DeleteOnReset
# VLAN
enable pvid auto_assign
config vlan default delete 1-12
config vlan default advertisement enable
create vlan 90 tag 90
config vlan 90 add tagged 1-11 advertisement disable
create vlan 1001 tag 1001
config vlan 1001 add tagged 1 advertisement disable
create vlan 4020 tag 4020
config vlan 4020 add tagged 12 advertisement disable
disable qinq
disable gvrp
disable vlan_trunk
config gvrp 1-12 state disable ingress_checking enable acceptable_frame admit_all pvid 1
# PROTOCOL_VLAN
# QINQ
# SUBNETVLAN
config vlan_precedence port 1-12 mac_based_vlan
# SUPERVLAN
# RSPAN
disable rspan
# MEF
# 8021X
disable 802.1x
# guestvlan
# TR
# ACL
disable cpu_interface_filtering
# NLB
# LIMITED_MULTICAST_RANGE
# MULTICAST_VLAN
# FDB
config fdb aging_time 300
# ADDRBIND
config address_binding ip_mac ports 1-12 forward_dhcppkt enable
disable address_binding dhcp_snoop
disable address_binding dhcp_snoop ipv6
disable address_binding nd_snoop
disable address_binding trap_log
config address_binding dhcp_snoop max_entry ports 1-12 limit no_limit
# DHCPV6_SNOOPING
# ND_SNOOPING
# DhcpServerScreening
config filter dhcp_server port all state disable
config filter dhcp_server illegal_server_log_suppress_duration 5min
config filter dhcp_server trap_log disable
# ARPSpoofingPrevention
# MAC_ADDRESS_TABLE_NOTIFICATION
disable mac_notification
config mac_notification interval 1 historysize 1
config mac_notification ports 1-12 disable
# STP
disable stp
config stp ports 1-12 fbpdu disable
# BPDU_TUNNEL
config bpdu_tunnel ports all type none
disable bpdu_tunnel
# BPDU_PROTECTION
config bpdu_protection ports 1-12 mode shutdown
# SAFEGUARD_ENGINE
config safeguard_engine state disable utilization rising 30 falling 20 trap_log disable mode fuzzy
# BANNER_PROMP
config command_prompt DGS-3612G
config greeting_message default
# BCPING
enable broadcast_ping_reply
# LACP
config link_aggregation algorithm ip_source
config lacp_port 1-12 mode passive
# IP
config ipif_mac_mapping ipif System mac_offset 0
config ipif System ipaddress 1.2.3.254/24 vlan 90
config ipif System proxy_arp disable local disable
config ipif_mac_mapping ipif vlan1001 mac_offset 1
create ipif vlan1001 11.2.3.1/24 1001 state enable
config ipif vlan1001 proxy_arp disable local disable
config ipif_mac_mapping ipif vlan4020 mac_offset 2
create ipif vlan4020 111.2.3.4/28 4020 state enable
config ipif vlan4020 proxy_arp disable local disable
config ipif System ip_mtu 1500
config ipif vlan1001 ip_mtu 1500
config ipif vlan4020 ip_mtu 1500
config ipif System dhcpv6_client disable
config ipif vlan1001 dhcpv6_client disable
config ipif vlan4020 dhcpv6_client disable
config ipif System ip_directed_broadcast disable
config ipif vlan1001 ip_directed_broadcast disable
config ipif vlan4020 ip_directed_broadcast disable
disable autoconfig
# DHCP_SERVER
config dhcp ping_packets 2
config dhcp ping_timeout 500
disable dhcp_server
# LLDP
enable lldp
config lldp message_tx_interval 30
config lldp tx_delay 2
config lldp message_tx_hold_multiplier 4
config lldp reinit_delay 2
config lldp notification_interval 5
config lldp ports 1-12 notification enable
config lldp ports 1-12 admin_status tx_and_rx
# MBA
disable mac_based_access_control
# COMPOUND_AUTHENTICATION
config authentication ports 1-12 auth_mode host_based
config authentication ports 1-12 multi_authen_methods none
enable authorization attributes
config authentication server failover block
# SNOOP
config limited_multicast_addr ports 1-12 state disable
# ARP
config arp_aging time 20
config gratuitous_arp send ipif_status_up disable
config gratuitous_arp send dup_ip_detected disable
config gratuitous_arp learning disable
# ROUTE
config route preference static 60
config route preference default 1
config route preference rip 100
config route preference ospfIntra 80
config route preference ospfInter 90
config route preference ospfExt1 110
config route preference ospfExt2 115
config route preference ebgp 70
config route preference ibgp 130
create iproute 11.2.0.0/255.255.0.0 null0
create route redistribute dst ospf src static mettype 2 metric 20
create route redistribute dst ospf src local mettype 2 metric 20
config ecmp algorithm ip_destination crc_low
enable ecmp ospf
# RELAY6
config dhcpv6_relay hop_count 4
disable dhcpv6_relay
# DHCPv6_SERVER
disable dhcpv6_server
config dhcpv6_server ipif vlan1001 state enable
config dhcpv6_server ipif System state enable
config dhcpv6_server ipif vlan4020 state enable
# IGMP
config igmp ipif System version 3 query_interval 125 max_response_time 10 robustness_variable 2 state disable
config igmp ipif System last_member_query_interval 1
config igmp check_subscriber_source_network ipif System enable
config igmp ipif vlan4020 version 3 query_interval 125 max_response_time 10 robustness_variable 2 state disable
config igmp ipif vlan4020 last_member_query_interval 1
config igmp check_subscriber_source_network ipif vlan4020 enable
config igmp ipif vlan1001 version 3 query_interval 125 max_response_time 10 robustness_variable 2 state disable
config igmp ipif vlan1001 last_member_query_interval 1
config igmp check_subscriber_source_network ipif vlan1001 enable
# PIMSM
disable pim
config pim cbsr hash_masklen 30
config pim cbsr bootstrap_period 60
config pim register_suppression_time 60
config pim register_probe_time 5
config pim last_hop_spt_switchover never
config pim crp holdtime 150 priority 192
config pim crp wildcard_prefix_cnt 0
config pim ipif System state disable hello 30 jp_interval 60 mode dm dr_priority 1
config pim cbsr ipif System priority -1
config pim ipif vlan4020 state disable hello 30 jp_interval 60 mode dm dr_priority 1
config pim cbsr ipif vlan4020 priority -1
config pim ipif vlan1001 state disable hello 30 jp_interval 60 mode dm dr_priority 1
config pim cbsr ipif vlan1001 priority -1
create pim static_rp group 239.100.0.0/16 rp 192.168.254.200
config pim-ssm state disable group_range 232.0.0.0/8
disable dvmrp
disable rip
disable ospf
disable ospfv3
disable dnsr
# DHCP_RELAY
enable dhcp_relay
config dhcp_relay hops 4 time 100
config dhcp_relay option_82 state enable
config dhcp_relay option_82 check disable
config dhcp_relay option_82 policy keep
config dhcp_relay option_60 state disable
config dhcp_relay option_61 state disable
config dhcp_relay add ipif vlan1001 111.2.3.1
config dhcp_relay option_60 default mode drop
config dhcp_relay option_61 default drop
disable dhcp_local_relay
disable vrrp
disable vrrp ping
---------------------------------------------------------------------------------------------------------
P.S. На DGS-3612G включен dhcp_relay, а на свиче доступа DES-3028 - dhcp_local_relay
Подскажите, где проблема.