Trunk on Cisco 877

Feb 14, 2011 2 Replies

Hello I have this scenario:


HQ: cisco 877 network 192.168.1.0/24



Remote site A: network 192.168.1.0/24



these two places are connected via a Wireless transparent layer2 link and everything works perfect.


Firstly the wireless link will need to support 802.1q trunking. Otherwise forget it.

Firstly - as well - you will need Advanced IP Services feature set on the 870 to have support for multiple vlans.

! I am dubious about config mode configuration of vlans ! on 870's so I use vlan database.

vlan database vlan 255 exit

int vlan 1 ip address 172.16.0.0 255.255.254.0

int vlan 255 ip address 192.168.1.0 255.255.255.0

int fa 0 switchport access vlan 255

int fa 1 switchport access vlan 255

int fa 2 switchport access vlan 255

int fa 3 sw mode trunk ! or otherwise get trunking working.

! you will need to get the trunking mode the same on both ends of the ! link regarding trunk negotiation or otherwise.

I can imagine the wireless kit being "trunk transparent" or "trunk knowledgable" - or of course "trunk impossible". You will have to get support/info from the suppliers.

The non-cisco kit is up to you:-)

Thank you bod for you help yesterday I managed it to work. I created two vlans and each one to a single port. untagged vlans, (port based) . the wireless bridge is a standard L2 bridge so it let flow vlan tagged packets flawlessy.

"bod43" ha scritto nel messaggio news: snipped-for-privacy@glegroupsg2000goo.googlegroups.com...

Firstly the wireless link will need to support 802.1q trunking. Otherwise forget it.

Firstly - as well - you will need Advanced IP Services feature set on the 870 to have support for multiple vlans.

! I am dubious about config mode configuration of vlans ! on 870's so I use vlan database.

vlan database vlan 255 exit

int vlan 1 ip address 172.16.0.0 255.255.254.0

int vlan 255 ip address 192.168.1.0 255.255.255.0

int fa 0 switchport access vlan 255

int fa 1 switchport access vlan 255

int fa 2 switchport access vlan 255

int fa 3 sw mode trunk ! or otherwise get trunking working.

! you will need to get the trunking mode the same on both ends of the ! link regarding trunk negotiation or otherwise.

I can imagine the wireless kit being "trunk transparent" or "trunk knowledgable" - or of course "trunk impossible". You will have to get support/info from the suppliers.

The non-cisco kit is up to you:-)

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required