Can I connect a 2900XL switch to Cisco 7960 pc port?

Answered Question
Aug 24th, 2009

It doesn't seem to be working. I tried access vlan as well as trunking config on the 2900XL switch port to a 7960 phone PC port.

I have this problem too.
0 votes
Correct Answer by Paolo Bevilacqua about 7 years 4 months ago

Try disabling spanning tree.

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Yang Xia Mon, 08/24/2009 - 14:25

It's a temporary switch and I don't want to mess around the phone upstream connection. Also I can power on/off the 2900 switch without affecting the phone. What should I configure the switch port to 7960 pc port? I've tried both access and trunk mode.

Yang Xia Mon, 08/24/2009 - 14:44

Access doesn't work. Switch is getting the bpdu packet from the phone pc port.

!

interface FastEthernet0/1

switchport access vlan 231

end

00:02:03: %SPANTREE-2-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk FastEthernet0/1 on vlan 231.

00:02:03: %SPANTREE-2-BLOCK_PORT_TYPE: Blocking FastEthernet0/1 on vlan 231. Inconsistent port type.

Changed to trunk port still doesn't help. Switch thinks it's the root for both VLANs.

!

interface FastEthernet0/1

switchport trunk encapsulation dot1q

switchport mode trunk

end

#sh spanning-tree brief

VLAN1

Spanning tree enabled protocol IEEE

ROOT ID Priority 32768

Address 0001.968f.94c0

This bridge is the root

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32768

Address 0001.968f.94c0

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Port Designated

Name Port ID Prio Cost Sts Cost Bridge ID Port ID

------- ------- ---- ---- --- ---- -------------- -------

Fa0/1 128.13 128 19 FWD 0 0001.968f.94c0 128.13

Fa0/4 128.16 128 19 BLK 0 0001.968f.94c0 128.16

Fa0/5 128.17 128 19 BLK 0 0001.968f.94c0 128.17

Fa0/6 128.18 128 19 BLK 0 0001.968f.94c0 128.18

Fa0/7 128.19 128 19 BLK 0 0001.968f.94c0 128.19

Fa0/8 128.20 128 19 BLK 0 0001.968f.94c0 128.20

Fa0/10 128.23 128 19 BLK 0 0001.968f.94c0 128.23

Fa0/11 128.24 128 19 BLK 0 0001.968f.94c0 128.24

Fa0/12 128.25 128 19 BLK 0 0001.968f.94c0 128.25

Fa0/13 128.26 128 19 BLK 0 0001.968f.94c0 128.26

Port Designated

Name Port ID Prio Cost Sts Cost Bridge ID Port ID

------- ------- ---- ---- --- ---- -------------- -------

Fa0/14 128.27 128 19 BLK 0 0001.968f.94c0 128.27

Fa0/15 128.28 128 19 BLK 0 0001.968f.94c0 128.28

Fa0/16 128.29 128 19 BLK 0 0001.968f.94c0 128.29

Fa0/17 128.31 128 19 BLK 0 0001.968f.94c0 128.31

Fa0/18 128.32 128 19 BLK 0 0001.968f.94c0 128.32

Fa0/19 128.33 128 19 BLK 0 0001.968f.94c0 128.33

Fa0/20 128.34 128 19 BLK 0 0001.968f.94c0 128.34

Fa0/21 128.35 128 19 BLK 0 0001.968f.94c0 128.35

Fa0/22 128.36 128 19 BLK 0 0001.968f.94c0 128.36

Fa0/23 128.37 128 19 BLK 0 0001.968f.94c0 128.37

Fa0/24 128.38 128 19 BLK 0 0001.968f.94c0 128.38

VLAN231

Spanning tree enabled protocol IEEE

ROOT ID Priority 32768

Address 0001.968f.94c1

This bridge is the root

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32768

Address 0001.968f.94c1

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Port Designated

Name Port ID Prio Cost Sts Cost Bridge ID Port ID

------- ------- ---- ---- --- ---- -------------- -------

Fa0/1 128.13 128 19 FWD 0 0001.968f.94c1 128.13

Fa0/2 128.14 128 19 FWD 0 0001.968f.94c1 128.14

Fa0/3 128.15 128 19 BLK 0 0001.968f.94c1 128.15

Fa0/9 128.22 128 19 FWD 0 0001.968f.94c1 128.22

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