08-04-2010 09:01 AM
Hello
At our Datacenter, we are looking to bring in a GB circuit from the ISP to give us GB throughput across the entire network. The only sticking point is the CSS. Right now all connections are made using the Fast Ethernet ports. Is it possible to turn up a Gig ports on the management card and use it to relocate an already existing circuit/vlan? Using the GBIC, I want to connect over fiber to a Cisco 3750 switch. Is this possible?
Thanks
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08-09-2010 01:10 AM
You can enable gig ports on SCM but user traffic may stop for several tens of seconds.
I confirmed the behavior with my lab devices.
--- interface config on CSS
interface 1/1
admin-shutdown
bridge vlan 774
interface 1/2
admin-shutdown
bridge vlan 775
interface 2/1
bridge vlan 774
interface 2/2
bridge vlan 775
When I enabled (issued no admin-shut) at interface 1/1 and 1/2, bridge forwarding table
was purged and all services went down.
After several tens of seconds, all client and server mac address were listed on bridge
forwarding table and all services went alive. (Console log of my test is attached.)
---
CSS11503-A# show bridge forwarding
VLAN MAC Address Port Number
----- ----------- -----------
VLAN774 00-1d-45-26-87-17 2/1
VLAN775 00-0c-29-21-d7-62 2/2
00-0c-29-2f-15-7b 2/2
00-1d-45-26-87-18 2/2
00-0c-29-68-3e-de 2/2
CSS11503-A# show service summary
Service Name State Conn Weight Avg State
Load Transitions
sv1 Alive 0 1 2 34
sv2 Alive 0 1 2 32
sv3 Alive 1 1 2 38
CSS11503-A# conf t
CSS11503-A(config)# int 1/1
CSS11503-A(config-if[ 1/1])# no admin-shutdown
CSS11503-A(config-if[ 1/1])# int 1/2
CSS11503-A(config-if[ 1/2])# no admin-shutdown
CSS11503-A(config-if[ 1/2])#
CSS11503-A# show service summary
Service Name State Conn Weight Avg State
Load Transitions
sv1 Down 0 1 255 35
sv2 Down 0 1 255 33
sv3 Alive 0 1 2 40
CSS11503-A# show bridge forwarding
VLAN MAC Address Port Number
----- ----------- -----------
VLAN774 00-0c-29-56-32-91 1/1
00-1d-45-26-87-17 2/1
VLAN775 00-0c-29-21-d7-62 1/2
---
I mean that you can connect between cat3750 and CSS with GBIC and fiber cable.
However, communication failure may occur during this operation. (Maintenance window
wil be needed.)
08-09-2010 01:10 AM
You can enable gig ports on SCM but user traffic may stop for several tens of seconds.
I confirmed the behavior with my lab devices.
--- interface config on CSS
interface 1/1
admin-shutdown
bridge vlan 774
interface 1/2
admin-shutdown
bridge vlan 775
interface 2/1
bridge vlan 774
interface 2/2
bridge vlan 775
When I enabled (issued no admin-shut) at interface 1/1 and 1/2, bridge forwarding table
was purged and all services went down.
After several tens of seconds, all client and server mac address were listed on bridge
forwarding table and all services went alive. (Console log of my test is attached.)
---
CSS11503-A# show bridge forwarding
VLAN MAC Address Port Number
----- ----------- -----------
VLAN774 00-1d-45-26-87-17 2/1
VLAN775 00-0c-29-21-d7-62 2/2
00-0c-29-2f-15-7b 2/2
00-1d-45-26-87-18 2/2
00-0c-29-68-3e-de 2/2
CSS11503-A# show service summary
Service Name State Conn Weight Avg State
Load Transitions
sv1 Alive 0 1 2 34
sv2 Alive 0 1 2 32
sv3 Alive 1 1 2 38
CSS11503-A# conf t
CSS11503-A(config)# int 1/1
CSS11503-A(config-if[ 1/1])# no admin-shutdown
CSS11503-A(config-if[ 1/1])# int 1/2
CSS11503-A(config-if[ 1/2])# no admin-shutdown
CSS11503-A(config-if[ 1/2])#
CSS11503-A# show service summary
Service Name State Conn Weight Avg State
Load Transitions
sv1 Down 0 1 255 35
sv2 Down 0 1 255 33
sv3 Alive 0 1 2 40
CSS11503-A# show bridge forwarding
VLAN MAC Address Port Number
----- ----------- -----------
VLAN774 00-0c-29-56-32-91 1/1
00-1d-45-26-87-17 2/1
VLAN775 00-0c-29-21-d7-62 1/2
---
I mean that you can connect between cat3750 and CSS with GBIC and fiber cable.
However, communication failure may occur during this operation. (Maintenance window
wil be needed.)
08-09-2010 07:39 AM
Thank you for the information!
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