Hi All,
I have faced a problem with configuring Cisco 3750G series switches as Sever farm switches with redudance. i have attaced basic connectivity diagram with this..
I
Switch model -
WS-C3750G-24T
IOS -
C3750-IPSERVICES-M
servers have 2NIC (1GBps) and both are bridged for redundant connections.
In both switches all ports get green coluor except one port on Secondary SW. I saw some Spanning tree block port status on that switch .. I thougt that is normal behavior ...
when i type Show cdp neghbor command on switch i can see other switch through a server connected port. Also Spannig tree root bridge election is occured through that port . Simply i need to configure both switches to pass traffic through there uplinks them selves.. but it seems like Secondry switch pass its traffic through primary switch ( i think according to STP ) using interconnection of bridge port of a server. Is there any possibilty for eliminate this..pls help me find out this thing.
Here are some captures ..
sfsw-01#sh vlan brief (Primary Switch)
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3
Gi1/0/4, Gi1/0/5, Gi1/0/6
Gi1/0/8, Gi1/0/9, Gi1/0/10
Gi1/0/11, Gi1/0/12, Gi1/0/13
Gi1/0/14, Gi1/0/15, Gi1/0/16
Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22
Gi1/0/23, Gi1/0/24
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
sfsw-01#sh spanning-tree vlan 1 (Primary switch)
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 24577
Address 0018.baf3.4980
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 24577 (priority 24576 sys-id-ext 1)
Address 0018.baf3.4980
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Desg FWD 4 128.1 P2p
Gi1/0/3 Desg FWD 4 128.3 Edge P2p
Gi1/0/4 Desg FWD 4 128.4 Edge P2p
Gi1/0/5 Desg FWD 19 128.5 P2p
Gi1/0/6 Desg FWD 19 128.6 Edge P2p
Gi1/0/7 Desg FWD 19 128.7 P2p
Gi1/0/10 Desg FWD 4 128.10 Edge P2p
Gi1/0/11 Desg FWD 4 128.11 Edge P2p
Gi1/0/13 Desg FWD 4 128.13 Edge P2p
Gi1/0/19 Desg FWD 4 128.19 Edge P2p
Gi1/0/23 Desg FWD 19 128.23 Edge P2p
Gi1/0/24 Desg FWD 19 128.24 Edge P2p
sfsw-02#sh vl br (Secondry Switch)
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3
Gi1/0/4, Gi1/0/5, Gi1/0/6
Gi1/0/7, Gi1/0/8, Gi1/0/9
Gi1/0/10, Gi1/0/11, Gi1/0/12
Gi1/0/13, Gi1/0/14, Gi1/0/15
Gi1/0/16, Gi1/0/17, Gi1/0/18
Gi1/0/19, Gi1/0/20, Gi1/0/21
Gi1/0/22, Gi1/0/23, Gi1/0/24
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
sfsw-02#sh spanning-tree vl 1 (Secondry Switch)
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 24577
Address 0018.baf3.4980
Cost 14
Port 5 (GigabitEthernet1/0/5)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 28673 (priority 28672 sys-id-ext 1)
Address 0018.baf3.4100
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Gi1/0/1 Altn BLK 19 128.1 P2p
Gi1/0/2 Desg FWD 4 128.2 Edge P2p
Gi1/0/3 Desg FWD 4 128.3 Edge P2p
Gi1/0/4 Desg FWD 4 128.4 Edge P2p
Gi1/0/5 Root FWD 4 128.5 P2p
Gi1/0/7 Desg FWD 4 128.7 Edge P2p
Gi1/0/8 Desg FWD 4 128.8 Edge P2p
Gi1/0/9 Desg FWD 4 128.9 Edge P2p
Gi1/0/10 Desg FWD 4 128.10 Edge P2p
Gi1/0/14 Desg FWD 4 128.14 Edge P2p
Gi1/0/15 Desg FWD 4 128.15 Edge P2p
Gi1/0/17 Desg FWD 19 128.17 Edge P2p
Gi1/0/23 Desg FWD 19 128.23 Edge P2p
Accepted Solutions
