2 WAE WCCP l2 only 1 gets the traffic
Hi,
I have 1 WAN Router and 2 WAVE devices configured in WCCP. The configuration works fine except that only the first WAVE that sees the router and established the WCCP receives the traffic. What I mean is that both WAVEs see the router and vice versa. When I establish the WCCP connection, the first WAVE to establish it becomes LEAD WAE and the other one does not get packets. If I disconnect the lead WAE or change its WCCP config and put it back, WCCP switches over to the other WAE and the other one is now exclusevly receiving the traffic. No load balancing is acheived.
First here's my setup:
1 WAN Router Cisco ISR G2 2911 IOS 15.2(1)T
2 Cisco WAVE-274 WAAS version 4.3.3 configured identically for WCCP.
Router IP: 10.x.y.1/22
WAVE IPs: 10.x.y.9 and 10.x.y.7 /22 and default gateway is the router 10.x.y.1
Users are on the same network 10.x.y.0/22 (is this a problem? i read in some WAAS config guide that the WAE cannot be in the same network as users)
Second here's the relevant config:
Router:
ip cef
ip wccp 61
ip wccp 62
interface GigabitEthernet0/0
description *** LAN Connection ***
ip wccp 61 redirect in
ip addr 10.x.y.1 255.255.252.0
interface GigabitEthernet0/1
description *** WAN Connection ***
ip wccp 62 redirect in
ip addr WAN_IP...
WAAS:
primary-interface GigabitEthernet 1/0
interface GigabitEthernet 1/0
ip address 10.x.y.9 255.255.252.0 (and .7 for the second WAVE)
interface InlineGroup 1/1
shutdown
wccp router-list 1 10.x.y.1
wccp tcp-promiscuous router-list-num 1 l2-redirect l2-return
wccp version 2
When I do the following on the router:
show ip wccp 61 detail
or show ip wccp 62 detail
I see:
WCCP Client information:
WCCP Client ID: 10.x.y.7
Protocol Version: 2.0
State: Usable
Redirection: L2
Packet Return: L2
Assignment: HASH
Initial Hash Info: 00000000000000000000000000000000
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Assigned Hash Info: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
00000000000000000000000000000000
Hash Allotment: 128 (50.00%)
Packets s/w Redirected: 103912
Connect Time: 03:34:05
GRE Bypassed Packets
Process: 0
CEF: 0
Errors: 0
WCCP Client ID: 10.x.y.9
Protocol Version: 2.0
State: Usable
Redirection: L2
Packet Return: L2
Assignment: HASH
Initial Hash Info: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
00000000000000000000000000000000
Assigned Hash Info: 00000000000000000000000000000000
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Hash Allotment: 128 (50.00%)
Packets s/w Redirected: 0
Connect Time: 01:46:24
GRE Bypassed Packets
Process: 0
CEF: 0
Errors: 0
On the WAAS, the WCCP Assignment Settings for Load Balancing is the default: Hash. (Hash on Source IP (Service 61):)
the Egress Method is IP forwarding
I have several connections from different source IP addresses and somehow they all end up hashed on the same WAE:
ConnID Source IP:Port Dest IP:Port PeerID Accel RR
360 10.x.y.3:49463 10.q.w.36:52732 xx:xx:xx:xx:xx:xx TMDL 16.1%
373 10.x.y.4:55005 10.q.w.36:52732 xx:xx:xx:xx:xx:xx TMDL 24.8%
I checked in several places and read the best practices; the router platform support... and it seems that the config is OK
http://www.cisco.com/en/US/prod/collateral/contnetw/ps5680/ps6870/white_paper_c11-608042.html
Any ideas?
Thanks,
Patrick
Although it is recommended to use HASH for 2900 series routers, I just switched to MASK method for load balancing on both WAVE devices. This is supported according to Cisco doc. It seems that connections are now being accelerated by both WAVEs.
The behaviour is a bit weird though, connections are first being sent to one WAE then they show up as passthrough on it for a quick second and after that they get treated by the second wave!
I also see this behaviour when looking at the counters on the router, the counters went up to 274 packets on one router and are no longer changing although new connections are being treated, while the other router has a lot more packets:
ROUTER#show ip wccp 61 detail
WCCP Client information:
WCCP Client ID: 10.x.y.7
Protocol Version: 2.0
State: Usable
Redirection: L2
Packet Return: L2
Packets Redirected: 274
Connect Time: 01:49:58
Assignment: MASK
Mask SrcAddr DstAddr SrcPort DstPort
0000: 0x00000F00 0x00000000 0x0000 0x0000
Value SrcAddr DstAddr SrcPort DstPort CE-IP
0008: 0x00000800 0x00000000 0x0000 0x0000
0009: 0x00000900 0x00000000 0x0000 0x0000
0010: 0x00000A00 0x00000000 0x0000 0x0000
0011: 0x00000B00 0x00000000 0x0000 0x0000
0012: 0x00000C00 0x00000000 0x0000 0x0000
0013: 0x00000D00 0x00000000 0x0000 0x0000
0014: 0x00000E00 0x00000000 0x0000 0x0000
0015: 0x00000F00 0x00000000 0x0000 0x0000
WCCP Client ID: 10.x.y.9
Protocol Version: 2.0
State: Usable
Redirection: L2
Packet Return: L2
Packets Redirected: 100788
Connect Time: 01:49:56
Assignment: MASK
Mask SrcAddr DstAddr SrcPort DstPort
0000: 0x00000F00 0x00000000 0x0000 0x0000
Value SrcAddr DstAddr SrcPort DstPort CE-IP
0000: 0x00000000 0x00000000 0x0000 0x0000
0001: 0x00000100 0x00000000 0x0000 0x0000
0002: 0x00000200 0x00000000 0x0000 0x0000
0003: 0x00000300 0x00000000 0x0000 0x0000
0004: 0x00000400 0x00000000 0x0000 0x0000
0005: 0x00000500 0x00000000 0x0000 0x0000
0006: 0x00000600 0x00000000 0x0000 0x0000
0007: 0x00000700 0x00000000 0x0000 0x0000
Any ideas?
Maybe I should've just clustered the WAVEs inline...
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