Есть направленный с выше config на DES-1228/ME и DES-3200-28. Расключены коммутатора между собой по оптическим портам. При подключении через telnet с одного коммутатора на другой связь устанавливается и тут же сбрасывается. Подскажите пожалуйста, где и что поправить или что-то дописать.

Config

disable asymmetric_vlan
config vlan default delete 1-28
config vlan default add tagged 25-28
create vlan 99 tag 99
config vlan 99 add tagged 25-28
config vlan 99 advertisement enable

create iproute default 10.236.16.14
config ipif System vlan 99 ipaddress 10.236.16.1/28 state enable
config lldp ports 25-28 mgt_addr ipv4 10.236.16.1 enable

disable web

config traffic_segmentation 1-24 forward_list 25-28
config traffic_segmentation 25-28 forward_list 1-28

config traffic trap both
config traffic control 1-24 broadcast enable multicast enable unicast enable action drop threshold 100000 time_interval 30 countdown 5

enable loopdetect
config loopdetect recover_timer 60
config loopdetect interval 10
config loopdetect port 1-24 state enabled
config loopdetect port 25-28 state disabled

config bandwidth_control 1-28 rx_rate no_limit tx_rate no_limit

disable syslog
config log_save_timing on_demand

config ports 1-28 speed auto flow_control disable state enable clear_description
config ports 1-28 learning enable
config ports 1-28 mdix auto
config ports 25-26 medium_type fiber speed auto flow_control disable state enable clear_description
config ports 25-26 medium_type fiber learning enable
config ports 27-28 medium_type copper speed auto flow_control disable state enable clear_description learning enable

create vlan 101 tag 101 advertisement
config vlan 101 add tagged 25-28
config vlan 101 add untagged 1-24
create vlan 102 tag 102 advertisement
config vlan 102 add tagged 25-28
create vlan 103 tag 103 advertisement
config vlan 103 add tagged 25-28
create vlan 104 tag 104 advertisement
config vlan 104 add tagged 25-28
create vlan 105 tag 105 advertisement
config vlan 105 add tagged 25-28
create vlan 106 tag 106 advertisement
config vlan 106 add tagged 25-28
create vlan 107 tag 107 advertisement
config vlan 107 add tagged 25-28
create vlan 108 tag 108 advertisement
config vlan 108 add tagged 25-28
create vlan 109 tag 109 advertisement
config vlan 109 add tagged 25-28
create vlan 110 tag 110 advertisement
config vlan 110 add tagged 25-28
create vlan 111 tag 111 advertisement
config vlan 111 add tagged 25-28
create vlan 112 tag 112 advertisement
config vlan 112 add tagged 25-28
create vlan 113 tag 113 advertisement
config vlan 113 add tagged 25-28
create vlan 114 tag 114 advertisement
config vlan 114 add tagged 25-28

enable stp
config stp version rstp
config stp maxage 6 maxhops 6 forwarddelay 5 txholdcount 4 fbpdu enable lbd enable lbd_recover_timer 60
config stp trap new_root enable topo_change enable
config stp ports 1-24 externalCost auto edge true p2p auto state disable lbd enable
config stp ports 1-24 fbpdu disable
config stp ports 1-24 restricted_role true
config stp ports 1-24 restricted_tcn true
config stp ports 25-28 restricted_role false
config stp ports 25-28 restricted_tcn false
config stp ports 25-26 externalCost auto edge false p2p auto state enable lbd enable
config stp ports 25-28 fbpdu enable
config stp priority 28672 instance_id 0
config stp ports 26 externalCost 40000 edge false p2p auto state enable lbd enable

create trusted_host network 109.195.0.8/29
create trusted_host network 109.195.0.16/29
create trusted_host network 109.195.0.25/29
enable snmp traps
enable snmp authenticate traps
enable snmp linkchange_traps
config snmp linkchange_traps ports all enable
config snmp coldstart_traps enable
config snmp warmstart_traps enable
disable rmon

create snmp group gravicapa v1 read_view CommunityView write_view CommunityView notify_view CommunityView
create snmp group gravicapa v2c read_view CommunityView write_view CommunityView notify_view CommunityView
create snmp group pepelac v1 read_view CommunityView notify_view CommunityView
create snmp group pepelac v2c read_view CommunityView notify_view CommunityView
create snmp community gravicapa view CommunityView read_write
create snmp community pepelac view CommunityView read_only
create snmp host 109.195.0.25 v2c pepelac

enable mac_notification
config mac_notification interval 1 historysize 1
config mac_notification ports 1-24 enable
config mac_notification ports 25-28 disable

disable gvrp
config gvrp 1-24 state disable ingress_checking enable acceptable_frame admit_all pvid 101
config gvrp 25-28 state disable ingress_checking enable acceptable_frame admit_all pvid 1

enable sntp
config time_zone operator + hour 3 min 0
config sntp primary 109.195.0.1 poll-interval 720
config dst repeating s_week last s_day sun s_mth 3 s_time 3:0 e_week last e_day sun e_mth 10 e_time 4:0 offset 60

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 1-24 notification disable
config lldp ports 1-21, 25-28 admin_status tx_and_rx
config lldp ports 22-24 admin_status disable
config lldp ports 25-28 notification enable
config lldp ports 25-28 basic_tlvs port_description system_name system_description system_capabilities enable
config lldp ports 25-28 dot1_tlv_pvid enable
config lldp ports 25-28 dot1_tlv_protocol_identity eapol enable
config lldp ports 25-28 dot1_tlv_protocol_identity lacp enable
config lldp ports 25-28 dot1_tlv_protocol_identity gvrp enable
config lldp ports 25-28 dot1_tlv_protocol_identity stp enable
config lldp ports 25-28 dot3_tlvs mac_phy_configuration_status link_aggregation maximum_frame_size enable

save config

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Всё в этом мире относительно и криволинейно ...

IP-адрес устройства, с которого подключаетесь на проблемный коммутатор прописан в trusted_host?

Нет, не прописан. Прописал. Помогло. Спасибо.

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Всё в этом мире относительно и криволинейно ...

Не за что.