From: Brian Dennis (bdennis@internetworkexpert.com)
Date: Sun Jan 28 2007 - 00:09:35 ART
Can you shutdown the links to the other switches (CAT3 & CAT4) and then
bounce the trunk between CAT1 and CAT2 to see if VLAN 30 will start being
forwarded across the trunk?
--Brian Dennis, CCIE4 #2210 (R&S/ISP-Dial/Security/SP) bdennis@internetworkexpert.com Internetwork Expert, Inc. http://www.InternetworkExpert.com Toll Free: 877-224-8987 Direct: 775-745-6404 (Outside the US and Canada)
On 1/27/07 6:59 PM, "Michael Zuo" <mzuo@ixiacom.com> wrote:
> Yes, there are two more, physical connections are as follows: > > > CAT1 f0/14 to CAT2 f0/14 > CAT1 f0/23 to CAT3 f0/23 > CAT1 f0/22 to CAT4 f0/22 > CAT2 f0/22 to CAT3 f0/22 > CAT2 f0/23 to CAT4 f0/23 > CAT3 f0/14 to CAT4 f0/14 > CAT3 f0/15 to CAT4 f0/15 > > > Spanning tree port state as follows: > > CAT1#sh span vlan 30 > > VLAN0030 > Spanning tree enabled protocol ieee > Root ID Priority 32798 > Address 0011.20a9.9280 > This bridge is the root > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > > Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) > Address 0011.20a9.9280 > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > Aging Time 300 > > Interface Role Sts Cost Prio.Nbr Type > ---------------- ---- --- --------- -------- > -------------------------------- > Fa0/4 Desg FWD 19 128.4 P2p > Fa0/14 Desg FWD 19 128.14 P2p > Fa0/22 Desg FWD 19 128.22 P2p > Fa0/23 Desg FWD 19 128.23 P2p > > CAT1# > > CAT2(config)#do sh span vlan 30 > > VLAN0030 > Spanning tree enabled protocol ieee > Root ID Priority 32798 > Address 0011.20a9.9280 > Cost 19 > Port 14 (FastEthernet0/14) > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > > Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) > Address 0011.5c63.0e00 > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > Aging Time 300 > > Interface Role Sts Cost Prio.Nbr Type > ---------------- ---- --- --------- -------- > -------------------------------- > Fa0/5 Desg FWD 19 128.5 P2p > Fa0/14 Root FWD 19 128.14 P2p > Fa0/22 Desg FWD 19 128.22 P2p > Fa0/23 Desg FWD 19 128.23 P2p > > CAT2(config)# > > CAT3(config)#do sh span vlan 30 > > VLAN0030 > Spanning tree enabled protocol ieee > Root ID Priority 32798 > Address 0011.20a9.9280 > Cost 19 > Port 23 (GigabitEthernet1/0/23) > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > > Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) > Address 0013.c4fc.8280 > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > Aging Time 300 > > Interface Role Sts Cost Prio.Nbr Type > ---------------- ---- --- --------- -------- > -------------------------------- > Gi1/0/14 Altn BLK 4 128.14 P2p > Gi1/0/15 Altn BLK 4 128.15 P2p > Gi1/0/22 Altn BLK 19 128.22 P2p > Gi1/0/23 Root FWD 19 128.23 P2p > > CAT3(config)#d > > > > CAT4(config)#do sh span vlan 30 > > VLAN0030 > Spanning tree enabled protocol ieee > Root ID Priority 32798 > Address 0011.20a9.9280 > Cost 19 > Port 22 (GigabitEthernet1/22) > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > > Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) > Address 0012.7f34.a7c0 > Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec > Aging Time 300 > > Interface Role Sts Cost Prio.Nbr Type > ---------------- ---- --- --------- -------- > -------------------------------- > Gi1/14 Desg FWD 4 128.14 P2p > Gi1/15 Desg FWD 4 128.15 P2p > Gi1/22 Root FWD 19 128.22 P2p > Gi1/23 Altn BLK 19 128.23 P2p > > CAT4(config)# > > > thanks > > -----Original Message----- > From: Brian Dennis [mailto:bdennis@internetworkexpert.com] > Sent: Saturday, January 27, 2007 6:40 PM > To: Michael Zuo; Alex Ouraev; ccielab@groupstudy.com > Subject: Re: ICMP showing encapsulation failed > > > Are there any other switches in this network that we aren't seeing in > your > diagram?
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