Добрый день.
Есть проблема, есть связка Cisco Catalyst 2960s и модуля  NM-16ESW установленного в Cisco 2610.
Связаны транковым портом. Все работает, кроме как не передается vlan 1.
2 дня бьюсь, причина скорее всего перед глазами но не вижу.

Куски конфига на транковых портах:

2960

interface GigabitEthernet1/0/21
switchport trunk native vlan 10
switchport trunk allowed vlan 1,2,4-7,9,11,14,15,151
switchport mode trunk
power inline never
srr-queue bandwidth share 10 10 60 20
queue-set 2
priority-queue out
mls qos trust cos
macro description cisco-switch
auto qos voip trust
spanning-tree link-type point-to-point
!

2600 ( NM-16ESW)

!
interface FastEthernet1/15
switchport trunk native vlan 10
switchport trunk allowed vlan 1,2,4-7,9,11,14,151,1002-1005
switchport mode trunk
!

#sh int gi1/0/21 swi
Name: Gi1/0/21
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: On
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 10 (VLAN0010)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: 1,2,4-7,9,11,14,15,151
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

sh int fa1/15 switchport
Name: Fa1/15
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 0 ((Inactive))
Trunking Native Mode VLAN: 10 (VLAN0010)
Trunking VLANs Enabled: 1,2,4-7,9,11,14,151,1002-1005
Trunking VLANs Active: 1-2,4-7,9,11,14,151
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

Все виланы проходят, кроме первого.
Оставить его по-умолчанию нельзя - оператор не пропускает.
Какие мысли?