Cisco 877 encapsulation dot1q

gsicoli123 · ‎02-23-2017

Hello Guys

Please, could you give a help. I have some problems when i go sub-interface FastEthernet0.0 to set up Router Inter-VLAN Routing

I dont find this option : encapsulation dot1q vlan-id native inside sub-interface. My router is Cisco 877 .

Do you know why?

Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interfa
Router(config)#interface fas
Router(config)#interface fastEthernet 0.0
Router(config-if)#enca ?
% Unrecognized command
Router(config-if)#?
Interface configuration commands:
arp Set arp type (arpa, probe, snap) or timeout or log
options
backup Modify backup parameters
bandwidth Set bandwidth informational parameter
bgp-policy Apply policy propagated by bgp community string
bridge-group Transparent bridging interface parameters
carrier-delay Specify delay for interface transitions
cdp CDP interface subcommands
crypto Encryption/Decryption commands
dampening Enable event dampening
default Set a command to its defaults
delay Specify interface throughput delay
description Interface specific description
dot1q dot1q interface configuration commands
dot1x Interface Config Commands for IEEE 802.1X
duplex Configure duplex operation.
eou EAPoUDP Interface Configuration Commands
ethernet Ethernet interface parameters
exit Exit from interface configuration mode
flow-sampler Attach flow sampler to the interface
help Description of the interactive help system
hold-queue Set hold queue depth
ip Interface Internet Protocol config commands
iphc-profile Configure IPHC profile
keepalive Enable keepalive
l2-filter Set Layer2 ACL for packet received by upper layer
protocols
llc2 LLC2 Interface Subcommands
load-interval Specify interval for load calculation for an
interface
logging Configure logging for interface
mac-address Manually set interface MAC address
macro Command macro
max-reserved-bandwidth Maximum Reservable Bandwidth on an Interface
mtu Set the interface Maximum Transmission Unit (MTU)
netbios Use a defined NETBIOS access list or enable
name-caching
no Negate a command or set its defaults
ntp Configure NTP
pppoe pppoe interface subcommands
pppoe-client pppoe client
rmon Configure Remote Monitoring on an interface
routing Per-interface routing configuration
service-policy Configure QoS Service Policy
shutdown Shutdown the selected interface
snapshot Configure snapshot support on the interface
snmp Modify SNMP interface parameters
spanning-tree Spanning Tree Subsystem
speed Configure speed operation.
storm-control storm configuration
switchport Set switching mode characteristics
timeout Define timeout values for this interface
tms-class Group related information
transmit-interface Assign a transmit interface to a receive-only
interface
tx-ring-limit Configure PA level transmit ring limit
xconnect Xconnect commands
zone-member Apply zone name

show run

interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
dsl operating-mode auto
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
ip address 192.168.1.68 255.255.255.0
!
!
no ip http server
no ip http secure-server

Paul Smith · ‎02-23-2017

The issue is that 0.0 is not a sub interface, it refers to interface 0. If you were to change it to 0.1 it would be classed as a sub interface and your encapsulation commands would appear. As long has the number after the dot has some sort of numeric value, you should be fine.

gsicoli123 · ‎02-24-2017

I can not change to this sub-interface as you told me

--- System Configuration Dialog ---

Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]:
% Please answer 'yes' or 'no'.
Would you like to enter the initial configuration dialog? [yes/no]: no

Press RETURN to get started!

*Mar 1 00:00:05.651: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0 State changed to: Initialized
*Mar 1 00:00:05.655: %VPN_HW-6-INFO_LOC: Crypto engine: onboard 0 State changed to: Enabled
*Mar 1 00:00:09.651: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up
*Mar 1 00:00:10.651: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to up
*Mar 1 00:01:00.135: %LINK-5-CHANGED: Interface ATM0, changed state to administratively down
*Mar 1 00:01:01.135: %LINEP
Router>
Router>ROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to down
*Mar 1 00:33:38.383: %SYS-5-RESTART: System restarted --
Cisco IOS Software, C870 Software (C870-ADVSECURITYK9-M), Version 12.4(11)T, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Sun 19-Nov-06 03:57 by prod_rel_team
*Mar 1 00:33:38.383: %SNMP-5-COLDSTART: SNMP agent on host Router is undergoing a cold start
*Mar 1 00:33:38.471: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
*Mar 1 00:33:38.471: %CRYPTO-6-ISAKMP_ON_OFF: ISAKMP is OFF
*Mar 1 00:33:39.979: %LINK-3-UPDOWN: Interface FastEthernet3, changed state to up
*Mar 1 00:33:39.983: %LINK-3-UPDOWN: Interface FastEthernet2, changed state to up
*Mar 1 00:33:39.991: %LINK-3-UPDOWN: Interface FastEthernet1, changed state to up
*Mar 1 00:33:39.995: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up
*Mar 1 00:33:40.979: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet3, cha
Router>nged state to down
*Mar 1 00:33:40.983: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet2, changed state to down
*Mar 1 00:33:40.991: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1, changed state to down
*Mar 1 00:33:40.995: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to down
Router>enable
Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#exit
Router#sh
*Mar 1 00:33:58.987: %SYS-5-CONFIG_I: Configured from console by consoleow ru
Building configuration...

Current configuration : 633 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
!
!
!
!
!
!
!
!
!
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
dsl operating-mode auto
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
no ip address
!
!
no ip http server
no ip http secure-server
!
!

Router#conf term
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#in
Router(config)#interface Fa
Router(config)#interface FastEthernet 0/0.1
^
% Invalid input detected at '^' marker.

Router(config)#interface FastEthernet 0/1
^
% Invalid input detected at '^' marker.

Router(config)#interface FastEthernet 0.1
^
% Invalid input detected at '^' marker.

Router(config)#interface FastEthernet 0.10
^
% Invalid input detected at '^' marker.

Router(config)#

Paul Smith · ‎02-24-2017

Sorry yes chrihussey is right. Some the 800 series have switch ports combined with router ports. If this is the case the there may only be one port that can have sub interfaces. In the below 871, only Fa4 is a layer 3 port. You can test with the below commands;

Router#sh int fa 0 switchport
Name: Fa0
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Negotiation of Trunking: Disabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: 1
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

Crabmeat#sh int fa 4 switchport
% Fa4 is not a switchable port
Router#

gsicoli123 · ‎02-24-2017

Thanks very much for messages. Now I have tried to create sub-interface from FaEth0 to Faeth4 . if one interface is alow to do it. I could not . I have type the command you have told me.

Router#sh interfaces fastEthernet 0 swi
Router#sh interfaces fastEthernet 0 switchpor
Router#sh interfaces fastEthernet 0 switchport
Name: Fa0
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: none
Protected: false
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

Router#sh interfaces fastEthernet 1 switchport
Name: Fa1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: none
Protected: false
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

Router#sh interfaces fastEthernet 2 switchport
Name: Fa2
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: none
Protected: false
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

Router#sh interfaces fastEthernet 3 switchport
Name: Fa3
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Disabled
Access Mode VLAN: 1 (default)
Trunking Native Mode VLAN: 1 (default)
Trunking VLANs Enabled: ALL
Trunking VLANs Active: none
Protected: false
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
Appliance trust: none

chrihussey · ‎02-25-2017

Please check the earlier post:

Instead of creating a sub-interface, use the "switchport mode trunk" command under the interface and then create the logical VLAN interface with the IP address.

There may be limitations on the number of VLAN interfaces you can create. It may only be 4 and that is with the Advanced IP Services image. So if you aren't running that you may be limited to a single VLAN. Below is the data sheet link for this router:

http://www.cisco.com/c/en/us/products/collateral/routers/800-series-rout...

Paul Smith · ‎02-27-2017

Sorry for the delayed response I have been super busy at work. Can you post you running-config?

chrihussey · ‎02-24-2017

I looked at an 871 so the same probably applies. Instead of creating a sub-interface, use the "switchport mode trunk" command under the interface and then create the logical VLAN interface with the IP address.

There may be limitations on the number of VLAN interfaces you can create. It may only be 4 and that is with the Advanced IP Services image. Below is the data sheet link for this router:

http://www.cisco.com/c/en/us/products/collateral/routers/800-series-routers/product_data_sheet0900aecd8028a976.html

Hope this helps