Hi,
I have got slow network issue. Please see blow detailed information regarding my issue. Any help would be greatly appreciated.
**** DR ROUTER ****
class-map match-all TRUECOPY
match access-group name Truecopy
class-map match-any VOICE-CONTROL
match dscp af31
match dscp cs3
class-map match-all BACKUPS
match access-group name Backups
class-map match-all VOICE-BEARER
match dscp ef
!
policy-map DC-DR
class VOICE-BEARER
priority 1500
class VOICE-CONTROL
bandwidth 40
class TRUECOPY
set dscp af11
bandwidth 300000
class BACKUPS
set dscp cs1
bandwidth 50000
class class-default
fair-queue
set dscp af21
bandwidth 130000
ip access-list extended Backups
permit ip host 172.16.13.88 host 172.16.5.132
permit ip host 172.16.13.88 host 172.16.5.135
ip access-list extended Truecopy
permit ip host 172.16.13.26 host 172.16.55.24
permit ip host 172.16.13.27 host 172.16.55.25
-----------------------------------------------------
**** DC Router ****
class-map match-all TRUECOPY
match access-group name Truecopy
class-map match-all BACKUPS
match access-group name Backups
class-map match-any VOICE-CONTROL
match dscp af31
match dscp cs3
class-map match-all VOICE-BEARER
match dscp ef
policy-map DC-DR
class VOICE-BEARER
priority 1500
class VOICE-CONTROL
bandwidth 40
class TRUECOPY
set dscp af11
bandwidth 300000
class BACKUPS
set dscp cs1
bandwidth 50000
class class-default
fair-queue
set dscp af21
bandwidth 130000
ip access-list extended Backups
permit tcp host 172.16.5.132 host 172.16.13.88 eq 8400
permit ip host 172.16.5.132 host 172.16.13.88
permit ip host 172.16.5.135 host 172.16.13.88
ip access-list extended Truecopy
permit ip host 172.16.55.24 host 172.16.13.26
permit ip host 172.16.55.25 host 172.16.13.27
-----------------------------------------------------
Core switch 1 ports G2/38 and G2/39 configuration
interface GigabitEthernet2/38
description -- SAN true copy replication port for DR --
switchport
switchport access vlan 55
switchport mode access
spanning-tree portfast edge
end
interface GigabitEthernet2/39
description -- SAN true copy replication port2 for DR ---
switchport
switchport access vlan 55
switchport mode access
spanning-tree portfast edge
end
Situations:
- Fibre optic links via ISP with 500 MB/s bandwith between both sites. Each site has Cisco 6504 core switch,
3945 router (with EHWIC card). See an attachment Picture for more details. HUS130 set speed to 300 Mbps
- If Enabled both G2/38 and G2/39 ports on Core switch 1. Then, this creates and increase the number of "PAUSE output".
Moreover, the network speed througput also drop. No error or Pause output on the ports of Core switch 2.
However, if enabled only one switch port (either G2/38 or G2/39) then there is no "PAUSE output". Network throughput back to normal.
- The network throughput will go slow/drop when ENABLE AUX copy on the Backup server (Hitachi-HUS110)
Moreover, the Backup traffic take over the network and reduce the amount of SAN Truecopy (HUS130) traffic's throughput
If disabled the AUX copy then network throughput back to normal
- Port G2/32 on Core switch 1 has been disabled as we found some PAUSE Output increment.
Thank You,
Kind Regards
Rohit Mangotra.
P.S Please refer to the network diagram attached.
